748 results about "Sample chamber" patented technology

The invention relates to the technical field of metal material sample preparation, in particular to a preparation method for extracting carbon replica of steel for a high-carbon wire rod. The method specifically comprises the following steps: S1, preparing a sample; s2, immersing the sample into a nitric acid alcohol solution; s3, placing the sample in a sample chamber of a high-vacuum coating instrument, evaporating a carbon film with the thickness of 10-20 nm on the surface of the sample, and taking out the sample after vacuum is relieved; s4, performing electrolytic film removal by adopting an electrolytic polishing corrosion instrument; s5, after the carbon film falls off, the nitric acid alcohol on the carbon film is cleaned until the absolute ethyl alcohol in the weighing bottle is colorless; s6, the carbon film is transferred into deionized water, after the carbon film is fully unfolded, the carbon film is fished up through a transmission electron microscope and a copper net and placed on filter paper, and the carbon film is tightly attached to the copper net; and S7, baking the carbon film sample adhered to the copper mesh for 30-60 seconds, and placing the dried sample under an electron microscope for observation to complete the preparation of the steel extraction carbon replica sample for the high-carbon wire rod. The method has the advantages of high demolding speed, complete and firm carbon film form, simple configuration and low cost.

The invention belongs to the technical field of transformer equipment, and particularly relates to an automatic sampling device and method for transformer oil and gas. The device comprises a control box and a sampling sealing box, wherein a display screen, a keyboard and a code scanning module are arranged at the front part of a box body of the control box; the sampling sealing box comprises a sampling sealing box cover and a sampling sealing box body, a sampling bag support is arranged in the sampling sealing box body, the sampling bag is arranged on the sampling bag support, and a two-way valve is arranged at the top of the sampling bag; a sampling chamber air outlet pipeline, a sampling chamber air inlet pipeline, a third pipeline and a fourth pipeline are arranged on one side, connected with the sealing box, of the control box; the third pipeline and the fourth pipeline are respectively connected with the two-way valve; a first vacuum pump gas inlet pipeline, a second vacuum pump gas outlet pipeline, a waste liquid tank pipeline, a transformer oil sample pipeline and a transformer gas sample pipeline are arranged at the rear part of the control box. According to the invention, the convenience, safety and reliability of transformer oil and gas sampling are comprehensively improved, and powerful technical support is provided for safe and stable operation of a power system.

The invention relates to the technical field of scanning electron microscopes, in particular to a scanning electron microscope which comprises a mounting frame, an electron microscope body, a vacuumizing mechanism, an adapter, a damping mechanism and a vacuum tube structure, the electron microscope body comprises a lens cone and a sample bin, and the vacuumizing mechanism is used for synchronously vacuumizing the lens cone and the sample bin; the damping mechanism is arranged between the mounting rack and the electron microscope main body; the adapter comprises an adapter tube, a first joint and a second joint, and the first joint and the second joint are arranged on the two sides of the adapter tube; the vacuum tube structure comprises a first flexible tube, a first rigid tube, a second flexible tube and a second rigid tube, and the first flexible tube and the second flexible tube are symmetrically arranged. Due to the fact that the flexible pipes are connected with the vacuumizing mechanism and the rigid pipe is connected with the electron microscope body, the symmetrical flexible pipes can balance pulling force in the vacuumizing process, the influence of the pulling force on the electron microscope body is reduced, the influence on the image quality is reduced, and the detection accuracy of the scanning electron microscope and the definition of images are effectively guaranteed.

A holder holds a battery which is subjected to X-ray analysis. The battery includes a positive electrode and a negative electrode. A sample chamber for disposing the battery therein is formed inside the holder. The holder includes a body, a beryllium plate, a first resin member, a conductive member, a positive electrode terminal, and a negative electrode terminal. An upper surface of the body is formed with a window. The beryllium plate is arranged in the window. The first resin member is provided on a surface of the beryllium plate. The conductive member is provided between the positive electrode and the first resin member so as to be in contact with the positive electrode of the battery. The positive electrode terminal is electrically connected to the conductive member. The negative electrode terminal is electrically connected to the negative electrode.

The present invention improves analysis accuracy and shortens measurement time by preventing a decrease in the intensity of fluorescent X-rays to be detected. A fluorescent X-ray analysis device having a sample chamber in which a sample is disposed and an irradiation chamber separated from the sample chamber by using a partition plate, the fluorescent X-ray analysis device having: an X-ray source that is disposed in the irradiation chamber and that irradiates X-rays obliquely toward an opening provided on a partition wall between the sample chamber and the irradiation chamber; a window frame member that is formed of a material that transmits the X-rays, that holds a partition film constituting a part of the partition, and that is disposed in an opening provided in the partition wall; and a film support member that has a long hole through which the X-rays pass, is disposed adjacent to the separator film on the irradiation chamber side, and supports the separator film from the irradiation chamber side. The film support member is disposed such that the long hole is parallel to an optical axis of the X-ray in a plan view from the sample chamber side toward the irradiation chamber side.

The invention discloses a honey adulteration detection method, which belongs to the technical field of food detection, and comprises the following steps: collecting an absorbance spectrum of a honey sample by using a near infrared spectrometer; extracting characteristic absorbance values A < lambda > 1 and A < lambda > 2 at a 1450 nm water molecule absorption peak and a 1490 nm saccharide molecule absorption peak; the ratio R is equal to A lambda 1 / A lambda 2; and comparing the R with a threshold range of 0.85-1.15 of pure honey so as to judge whether the honey is true or false. The portable device comprises a sample bin, a near infrared spectrum module, a control unit and a human-computer interaction interface, wherein a rotatable sample table is arranged in the sample bin to accommodate a plurality of disposable sample cups. The method abandons a complex black box model, adopts a characteristic wavelength ratio method with clear physical significance, has the outstanding advantages of simple principle, rapid detection (less than 30 seconds), high accuracy, low cost, simplicity and convenience in operation and the like, perfectly solves the problems of expensive equipment, long time consumption, limited identification capability and dependence on professionals in the prior art, and has a wide application prospect. The method is especially suitable for market on-site rapid screening.

A fluid sampling tool is locatable in a borehole for sampling formation fluid including a chemically active component from a formation. The fluid sampling tool includes a sample chamber including a fluid inlet and an interior, wherein the interior includes a substrate and a reagent attached to the substrate, and wherein the reagent is configured to react with the chemically active component of the formation fluid to form a reaction product. The fluid sampling tool also includes a pump operable to pump a sample of the formation fluid in from the formation through the probe and into the sample chamber. A formation fluid sample flows into the sample chamber and a chemically active component of the formation fluid sample reacts with the reagent to form the reaction product from which a presence and concentration of the chemically active component in the formation fluid sample is determinable

The invention discloses an optical instrument based on multifunctional fluorescence chemiluminescence imaging, and belongs to the technical field of optical instruments. An optical instrument based on multifunctional fluorescence chemiluminescence imaging comprises a fluorescence chemiluminescence imaging instrument, a box door is movably installed on the lower portion of the fluorescence chemiluminescence imaging instrument, a packaging plate is movably installed in the box door, and a sealing gasket is fixedly connected to the side face of the packaging plate. The packaging plate is pushed by the telescopic spring, so that the sealing gasket on the side face of the packaging plate and the sealing frame are sealed, the sealing effect of the sample chamber is improved, when the box door is opened, the sample table slides out synchronously, the sample table can stretch out conveniently and automatically, when the box door is closed, the sample table shrinks synchronously, and convenience in sample placement is improved; the photoelectric detector detects that the external light source and the buzzer begin to buzz, and when the box door is closed, the sample box has no external light source, and the buzzer stops buzzing, so that the light source in the sample chamber is monitored, and the imaging effect is prevented from being influenced.

An apparatus includes at least one processor and at least one memory storing instructions. The instructions, when executed by the processor(s), cause the apparatus to: determine that a sample chamber contains a first type of biological sample, where the sample chamber includes a bottom wall through which an imaging device can image the sample chamber; provide images by controlling the imaging device to, for each depth of a plurality of depths: focus on the respective depth, and capture one or more images containing the respective depth in the sample chamber; counting one or more constituents in the images to determine one or more depth distributions of the constituent(s) across the plurality of depths, where the constituent(s) include a constituent of interest; and quantifying the constituent of interest in the biological sample based on the one or more depth distributions and based on one or more depth distribution curves.

The invention provides a dynamic heat-water-force coupling test device and test method, and relates to the technical field of rock performance test.The device comprises a sample chamber for containing a rock sample; the heat loading assembly, the pore water pressure loading assembly and the force loading assembly are integrally arranged; the heat loading assembly comprises a heating element and a cooling element so as to simulate an environment in a wide temperature range or under a freezing and thawing cycle condition; the pore water pressure loading assembly is communicated with the rock sample to establish pore water seepage loading; an axial pressure loading element of the force loading assembly applies dynamic axial pressure to the rock sample, and a confining pressure loading element of the force loading assembly applies dynamic confining pressure to the rock sample; the sealing sleeve wraps the rock sample so as to isolate the confining pressure medium from the liquid medium. According to the device provided by the invention, three dynamic loads including the dynamic temperature, the dynamic pore water pressure and the dynamic mechanical stress can be synchronously applied and accurately controlled in a single device, so that a rock sample is subjected to a mechanical test in a vivid dynamic multi-field coupling environment.

A testing device for measuring oil, gas and water contents in rock has a heating desorption unit that has a sample chamber for placing a rock sample to be detected, a crushing mechanism arranged within the sample chamber, and a heating mechanism. The heating desorption unit crushes and heats the rock sample in a sealed manner to achieve gas analysis and desorption analysis of oil and water contained therein, thus obtaining components to be detected. The device further has a cold trap collection unit in communication with the sample chamber, a light hydrocarbon capture unit in communication with the cold trap collection unit, a gas measuring unit in communication with the light hydrocarbon capture unit for measuring and calculating a gas volume; and a central control unit for controlling the testing device.

The invention discloses a spectral analysis device and method for gas Raman scattering of a hollow-core optical fiber, and belongs to the technical field of gas analysis sensing. The spectrum analysis device comprises a laser, a light beam coupling device, a hollow-core optical fiber gas sample chamber, a collecting device and a spectrograph which are sequentially arranged along a light path, the light beam coupling device is used for coupling excitation laser generated by the laser into the hollow-core optical fiber gas sample chamber; to-be-detected gas flows in the hollow-core optical fiber gas sample chamber, excitation laser is conducted, and a transmission light beam containing the excitation laser and Raman scattering light is output; the collecting device is used for separating excitation laser in the transmission light beam and outputting a light beam only containing Raman scattering; a small round hole is formed in an inlet of the spectrograph, spatial filtering is carried out, and the luminous flux lost when a light beam enters the spectrograph is reduced; and the spectrometer receives the Raman scattering to obtain the Raman spectrum of the gas to be detected. The luminous flux lost when the light enters the spectrograph is reduced, the light beam collection efficiency is improved, and the signal-to-noise ratio and the analysis sensitivity are improved.

The embodiment of the invention provides a micro-fluidic detection chip, a detection method and detection equipment, and relates to the technical field of micro-fluidic chips, the micro-fluidic detection chip comprises a micro-fluidic layer which comprises a substrate, a top sealing layer and a bottom sealing layer, the top sealing layer and the bottom sealing layer are located on the two sides of the substrate, the substrate is provided with a sample cavity, a solid reagent cavity, a plurality of liquid bag buffer cavities, a plurality of liquid reagent cavities, a reagent buffer cavity and a reaction cavity, the sample cavity is communicated with the solid reagent cavity, the plurality of liquid bag buffer cavities are independently arranged, and the plurality of liquid reagent cavities are sequentially arranged at intervals; each liquid bag buffering cavity is internally provided with the corresponding puncturing structure; the liquid bag layer is arranged on one side of the base plate, the liquid bag layer comprises a plurality of liquid bag units which are arranged at intervals and are mutually independent, each liquid bag unit is provided with a liquid bag cavity, and the liquid bag cavities of the liquid bag units are arranged opposite to the at least one puncturing structure. According to the embodiment of the invention, the detection steps can be effectively simplified, and pollution caused by mutual mixing of different reagents is prevented.

The invention discloses a fluorescent probe device with high-sensitivity detection in the field of biological fluorescence detection.The fluorescent probe device comprises a micro-fluidic chip, a closed micro-channel allowing a sample to flow is arranged in the micro-fluidic chip, and the micro-channel comprises a reaction bin, a sample bin and an enzyme liquid bin; the sample bin and the enzyme liquid bin are symmetrically distributed on the two sides of the reaction bin, delay channels of zigzag structures are communicated between the sample bin and the reaction bin and between the enzyme liquid bin and the reaction bin, the sample bin and the enzyme liquid bin are provided with a first filling port and a second filling port respectively, the reaction bin is provided with vent holes communicated with the outside, and a plurality of aptamer fluorescent probes are fixed to the bottom wall of the reaction bin. A nucleic acid aptamer fluorescent probe is fixed in the micro-fluidic chip, a CRISPR-Cas12a enzyme digestion system is added, a plurality of signal fragments are released in the process that a single aptamer is combined with antibiotics, signal cascade amplification of CRISPR-Cas12a non-specific enzyme digestion activation is achieved, and the micro-fluidic chip has the function of detecting existence of drug-resistant genes. And the possibility of occurrence of false negative detection results is reduced as much as possible.

The invention provides a multi-gas mixed supply type metal hydride hydrogen storage PCT testing device and method, and belongs to the technical field of hydrogen storage material performance detection. In the device, a hydrogen source and a carbon monoxide gas source in a gas mixed supply system respectively pass through a pressure reducing valve and a mass flow controller corresponding to the hydrogen source and the carbon monoxide gas source, and then pass through a first valve, a deoxidizing agent device and a dehydrating agent device to be connected with a main pipeline; the argon source is connected into the main pipeline through the pressure reducing valve and the second valve and used for calibrating the volume; the large gas supply tank is connected into the main pipeline through a third valve, and the small gas supply tank is connected into the main pipeline through a quick connector and a fourth valve; the vacuum pump is connected to the main pipeline through a fifth valve; a hydrogen storage alloy is placed in the sample chamber which is connected with the main pipeline through a sixth valve; a temperature control device is arranged outside the sample chamber; and the monitoring and control system is used for detecting and recording the gas pressure change and controlling and monitoring the temperature of the sample chamber. The device can accurately evaluate the hydrogen storage performance change of the hydrogen storage alloy under different poisoning conditions.

Apparatus and methods are described including preparing a blood sample for analysis by depositing the blood sample within a sample chamber (52), and placing the sample chamber, with the blood sample deposited therein, within a microscopy unit (24). One or more microscopic images of the sample chamber (52) with the blood sample deposited therein are acquired, using a microscope of the microscopy unit. Based upon the one or more images, an amount of one or more cell types within the sample chamber that had already settled within the sample chamber, prior to acquisition of the one or more microscopic images is determined. A characteristic of the sample is determined, at least partially in response thereto. Other applications are also described.

The invention discloses a visual seepage test device and method for shear fracture of a rock structural surface under true triaxial. The visual seepage test device comprises a fixed base, a lower shear box, an upper shear box, a seepage water inlet pipe, a seepage water outlet pipe, a seepage water inlet shear head and a seepage water outlet shear head, the fixed base is connected with a normal loading block of a true triaxial testing machine through pin nails, the lower shear box is fixed on the fixed base, the upper shear box and the lower shear box are oppositely arranged, and the seepage water inlet shear head and the seepage water outlet shear head are respectively embedded into the lower shear box and the upper shear box to form a water injection cavity I and a water injection cavity II; after the lower shearing box and the upper shearing box are closed, a closed sample cavity for clamping a rock sample and a transparent block is formed, and meanwhile, the water injection cavity I and the water injection cavity II form a seepage cavity. According to the device and the method, the visual shear simulation of the rock mass structural surface under the multi-field coupling environment of true three-dimensional stress-high osmotic pressure-chemical corrosion and the like is realized.

The invention discloses a three-pool electrodialysis device and method for recovering a deep eutectic solvent. The method comprises the following steps: putting a deep eutectic extracting solution sample to be recovered into a sample pool; starting a direct-current power supply, electrifying the anode and the cathode, and performing electrodialysis on the eutectic extracting solution sample; detecting the concentration of a hydrogen bond acceptor in an anion receiving tank in real time, and detecting the concentration of a hydrogen bond donor in a cation receiving tank in real time until the concentration of the hydrogen bond acceptor and the concentration of the hydrogen bond donor are not changed any more, obtaining a hydrogen bond acceptor recovery solution in the anion receiving tank, hydrogen bond donor recovery liquid is obtained in the cation receiving pool; respectively distilling the hydrogen bond acceptor recovery liquid and the hydrogen bond donor recovery liquid, and removing moisture to obtain a recovered hydrogen bond acceptor and a recovered hydrogen bond acceptor; and mixing the recovered hydrogen bond acceptor and the recovered hydrogen bond acceptor according to the ratio of the initial eutectic solvent to obtain the recovered eutectic solvent.

The invention discloses a device and a method for measuring fluid conductivity at high temperature and high pressure, and relates to the technical field of physical property measurement. The device for measuring the conductivity of the fluid at the high temperature and the high pressure comprises a pyrophyllite pressure transmission assembly, a heater, a lower electrode plate, an upper electrode plate and a polytetrafluoroethylene sample cavity, and can measure the conductivity of the fluid at different temperatures and pressures by combining with a multi-surface jacking press; the polytetrafluoroethylene sample cavity is arranged, and the characteristics of low cost and high chemical stability of polytetrafluoroethylene are applied, so that the measurement of the fluid conductivity under the high-temperature and high-pressure environment can be realized at lower cost, and the measurement of the fluid conductivity under the high-temperature and high-pressure environment in the earth can be simulated.

A lysis capsule for performing a cell lysis procedure includes a hollow body having an open first end and an open second end, a first porous membrane covering the open first end, and a second porous membrane covering the open second end, and the hollow body defines a lysis chamber between the first and second porous membranes. A plurality of non-magnetic beads and at least one magnetic element are disposed within the lysis chamber, and the pores of the first and second porous membranes are sized to retain the non-magnetic beads and the magnetic element within the lysis chamber. An internal control may be contained within the lysis chamber to validate an assay result and / or to validate the effectiveness of the cell lysis procedure. The lysis capsule may be disposed within a sample chamber of a fluidic cartridge.

This charged particle beam device comprises: a charged particle beam optical system that irradiates a sample with an electron beam; a sample chamber that is provided with a stage on which the sample is placed; a detector that detects charged particles obtained by irradiating the sample with the electron beam; one or more computer systems that generate an image of the sample on the basis of output from the detector; a charging control component that controls charging of the sample by generating at least one of electrons, ions, and light according to a charging control condition; and an input device that receives input of an index value relating to the image. The one or more computer systems control the charging control component on the basis of the relationship between the index value and the charging control condition, and the index value.

The invention discloses a test device and method for freezing and thawing cycle indoor simulation of a seasonal frozen river slope, and belongs to the technical field of river dynamics. The device comprises a test box body, an environment temperature adjusting assembly and a plurality of data acquisition assemblies; a soil body layer for simulating a side slope and a water body for simulating a river are accommodated at the inner bottom of the test box body; the environment temperature adjusting assembly is arranged at the top of the test box body, and a water inlet pipe and a water outlet pipe which extend into the box body are arranged on the test box body; the plurality of data acquisition assemblies are distributed in the soil body layer, in the water body, in the sample box body and / or outside the test box body; the bottommost part of the soil body layer extends below the water body; a waterproof heating piece is arranged on the contact interface of the soil body layer and the bottom of the water body; the heating piece and the environment temperature adjusting assembly are independently adjusted. In the water body freezing stage and the stable freezing stage, the heating piece can start heating. According to the invention, the freezing and thawing cycle process of the seasonal frozen river slope can be accurately simulated.

The invention provides a nuclear magnetic resonance system and method for simulating high-temperature and high-pressure conditions. The nuclear magnetic resonance system for simulating the high-temperature and high-pressure conditions comprises a core rotor module, a temperature control and heat dissipation module, a signal enhancement and detection module and a high-pressure environment module, and the core rotor module is used for solving the problems that a traditional rotor is low in precision, short in service life and poor in adaptability. According to the nuclear magnetic resonance system and method for simulating the high-temperature and high-pressure conditions, the tolerance pressure of a sample cavity is improved, extreme high-pressure scenes such as deep sea and a mantle can be simulated, the sealing life is prolonged, the sample pollution rate is reduced, the detection accuracy is improved, the pressure monitoring delay is shortened, the pressure fluctuation is reduced, and the environmental stability is improved; the deviation of different batches of detection results is reduced to be within 2%, the system has an overpressure automatic pressure relief function, the safety of the system is improved, the system is adaptive to different types of highly corrosive samples, and the detection types are expanded.

The invention discloses a salt lake rock core permeation sample chamber for testing the permeation coefficient of a salt lake rock core sample, the salt lake rock core permeation sample chamber comprises an upper cover (2), an organic glass barrel (3) and a lower cover (4), a base (8), a latex film (11) and a pressurizing cap (7) are sequentially arranged above the lower cover (4) from bottom to top, and the latex film (11) sleeves the base (8) and the pressurizing cap (7), is tightened by a rubber band and is fastened by a hoop straining ring; and the lower cover (4) is provided with a water inlet and outlet valve interface (13) which is connected with a confining pressure controller and is used for controlling the peripheral annular pressure of the latex film (11), and foot pads (5) for supporting the sample chamber. A salt lake rock core sample is put into the latex film and then put into the sample chamber, a certain annular pressure is given to the sample through the water inlet and outlet valve interface, lateral seepage is prevented by controlling the annular pressure, and the situation that the permeability coefficient test result is unreliable due to the fact that the original structure state of the sample is changed under the action of large external force is prevented.

The utility model relates to a dynamic measuring device for activity of medical radioactive waste liquid, in particular to the field of radiation monitoring, which comprises a sample chamber and a detector. The sample chamber is provided with a liquid level detection device, an overflow detection device, a sample feeding / discharging pump and cleaning equipment; the sample chamber comprises a protection cavity and a Marinin cup-shaped sample box; the detector is positioned above the Marinin cup-shaped sample box; the liquid level detection device comprises first liquid level detection equipment arranged at the bottom end of the sample chamber and movable second liquid level detection equipment; the overflow detection device is used for detecting whether materials in the sample chamber overflow the sample chamber; the medical radioactive waste liquid decay pool is connected with the sample chamber through the sample injection / discharge pump; and a control valve is arranged between the sample feeding / discharging pump and the sample chamber. The measuring device provided by the utility model can accurately measure the activity of radionuclides in the waste liquid, and can realize that the measuring result can be traced to the national social public measurement standard through accurate measurement, so that the reliability is guaranteed.

The invention discloses a detection method for improving an EBSD calibration rate of dual-phase steel. The detection method comprises the following steps: (1) carrying out polishing pretreatment on a sample; (2) cleaning the surface of the sample; and (3) fixing the cleaned sample on a sample table by using a conductive adhesive, putting the sample table into a sample bin, vacuumizing, boosting the voltage, adjusting the working distance until an image is clear, optimizing a diffraction image, and then carrying out EBSD detection. The method is easy to operate, the definition of an image obtained when the sample is subjected to EBSD detection is guaranteed by combining multiple measures such as sample treatment and equipment parameter optimization, the calibration rate is high during EBSD detection and can be improved by 10% or above compared with a conventional calibration rate, the result is accurate, and the method is suitable for popularization.

The present invention relates to sample units for a sampling system for taking samples from a molten aluminum bath in a primary aluminum producing facility. The sample units comprise a refractory body, a sample chamber assembly arranged within the refractory body, an inflow opening, which is in flow connection with the sample cavity and is positioned in connection to the lateral side of the sample cavity and an inflow conduit arranged at least partly in the inflow opening. The invention further relates to a sampling system and a method for taking samples of molten aluminum with the inventive sample unit.

The utility model relates to a solid standard substance target required in laser ablation, in particular to a replaceable standard substance target, which is characterized in that the top surface of a target sleeve is provided with through holes in one-to-one correspondence with target position holes in the same number, and the bottom surface of the target sleeve is provided with cover plate holes in one-to-one correspondence with the target position holes in the same number; each target position hole is respectively communicated with the corresponding through hole and the corresponding cover plate hole, the diameter of the through hole is smaller than that of the target position hole, and a cover plate is put into the communicated target position hole from each cover plate hole; a small standard substance target is accommodated in each target position hole, a spring is arranged at the bottom of each small standard substance target, and two ends of the spring are respectively propped against the small standard substance target and the cover plate so as to fix the small standard substance target. The standard substance small target is simple to operate, the standard substance small target can be replaced by rotating the cover plate and taking out the spring, different types of standard substances can be flexibly used when different types of samples are subjected to laser in-situ micro-area analysis, the use efficiency of a limited space of a sample bin is improved, and waste of precious standard substances is reduced.

Provided herein is an electron particle system comprising an electron source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Also provided herein is a charged particle system comprising a charged source system comprising a high voltage component housed within a high voltage component volume occupied by an insulation gas, a sample chamber, and an electron beam column. Further provided herein is a method of using an insulation gas in a high voltage component of an electron particle system.

Obtaining a composite fluid sample from a flowline (14), using an apparatus (10) comprising: a housing (16); a pressure control barrier (18) movably mounted in the housing; a sample chamber (20) withi