36results about How to "Accurate sampling volume" patented technology

Systems for controlling a droplet microactuator are provided. According to one embodiment, a system is provided and includes a controller, a droplet microactuator electronically coupled to the controller, and a display device displaying a user interface electronically coupled to the controller, wherein the system is programmed and configured to permit a user to effect a droplet manipulation by interacting with the user interface. According to another embodiment, a system is provided and includes a processor, a display device electronically coupled to the processor, and software loaded and/or stored in a storage device electronically coupled to the controller, a memory device electronically coupled to the controller, and/or the controller and programmed to display an interactive map of a droplet microactuator. According to yet another embodiment, a system is provided and includes a controller, a droplet microactuator electronically coupled to the controller, a display device displaying a user interface electronically coupled to the controller, and software for executing a protocol loaded and/or stored in a storage device electronically coupled to the controller, a memory device electronically coupled to the controller, and/or the controller.

An air pollution sampling system and a method thereof applied to a wide-area air sampling are revealed. Air is forced into an air sampling unit by movement of a vehicle, for performing an active air sampling without a power source. An air sampling unit includes a plurality of baffle plates so as to adjust air sampling rate and avoid interference caused by turbulence generated during the movement of the vehicle. A positioning device provides geographic coordinates, vehicle speed and time. An information processing device integrates sampling flow and positioning information from the positioning device, collects information generated by the sampling system, and computes statistics of the accumulated samples and relative sampling positions. By the collected sampling positions, time and flow rate, the sampling amount is obtained through data processing and calculation. In combination with the display of positioning data, the geographic area represented by the air samples could be understood more clearly.

The invention relates to a field enrichment device for volatile organic compounds in underground water, belonging to the technical field of environmental monitoring. The enrichment device comprises an upper tank body and a lower tank body connected in a threaded connection manner, wherein a vertically communicated first sample injection hole, a gas inlet hole and a gas outlet pipe are arranged on the upper tank body; a second communicated sample injection hole is formed in the lower tank body; and a drying device and an adsorption device are arranged in the gas outlet pipe. The operating method of the device comprises the following steps: immersing the enrichment device in a sampling water body in a rope tying or handheld manner, introducing nitrogen via the gas inlet hole after the water body sample is completely collected, drying organic matters in the drying device, adsorbing the organic matters by the adsorption device, and finishing the collection process. According to the enrichment device, loss of the volatile organic compounds in the collection process and sample transfer process can be avoided, the organic matters in the samples are completely collected, the detection result is closer to the true situation, the reference property can be greatly improved, and the device is applied to be popularized and applied in related fields.

The invention discloses a pipeline dirt quantitative aseptic sampling device and method. And the method multiplies advance distance L of bucket as eliminating dirt from pipe wall by width of bucket R, where L*R=S, so as to get sampling area S on the pipe wall, and then divides dirt weight in the bucket by the sampling area S to get dirt quantity in unit area, thus achieving a quantitative dirt sampling purpose. And its advantages include: 1) quantifying the pipe wall sampling area by integration of electronic control technique and mechanical technique so as to implement quantitative pipe wall sampling; 2)adopting one-off parts to assure sampler asepsis, so as to make the sample not polluted and doped in the sampling course.

The invention discloses a crude oil quantitative sampling device which comprises a sampling probe which stretches into a raw oil pipeline, wherein the sampling probe is connected with a manual ball valve, a circulation pump, a filter, a first check valve, a first pneumatic three-way valve and a second check valve in sequence through a circulation pipeline; the second check valve is communicated with a crude oil pipeline through another circulation pipeline; the circulation pipeline between the first check valve and the pneumatic three-way valve is connected with a sampling pipeline; a pneumatic ball valve, a quantitative tank and a second pneumatic three-way valve are sequentially arranged on the sampling pipeline and is finally connected with a sample receiving bottle; the first pneumatic three-way valve and the second pneumatic three-way valve are connected through a pipeline; a lifting platform is arranged below the sample receiving bottle. The crude oil quantitative sampling device solves a series of problems of a conventional automatic sampling device and is reasonable in structure, accurate in sampling amount and good in working property.

The invention discloses a sample feeding device for measuring a trace target substance in blood sample. The sample feeding device comprises a detection channel, a sample feeding channel, an auxiliary channel, a detection pipeline unit, a sample feeding pipeline unit set, a detection pump, a sampling pump set and a control unit, wherein one section of the detection channel at the downstream is configured into a detection region and a detection window is arranged on the detection region; the sample feeding channel is connected with the upstream section of the detection channel to form a sample feeding bypath; the auxiliary channel is connected onto the detection channel between a connection point of the sample feeding channel and the detection region to form a sample feeding and leaking bypath; the detection pipeline unit is matched and connected with the detection channel and is provided with a control valve; the sample feeding pipeline unit set is matched and connected with the sample feeding channel and the auxiliary channel and is provided with a control valve set; the detection pump is connected into the upstream end of the detection channel by the detection pipeline unit and the corresponding control valve and is used for pumping a detection auxiliary solution; the sampling pump set is connected into the sample feeding channel by the sample feeding pipeline unit set and the corresponding control valve set and is used for correspondingly pumping a sample feeding liquid set; the control unit is connected with the detection pump, the sample feeding pump, the control valve and the control valve set and is used for logically controlling movement sequences of the detection pump, the sample feeding pump set and the matched control valve, and the control valve set.

The invention relates to a spacecraft on-orbit liquid working medium sampling device and method. The sampling device comprises a sampling shell, a bag type blocking structure is arranged in the sampling shell, and the bag type blocking structure divides a cavity of the sampling shell into a first gas side and a first liquid side which are sealed with each other; a first gas side connector and a first liquid side connector are respectively arranged on the sampling shell, the first gas side connector is arranged corresponding to a first gas side of the sampling shell, and the first liquid side connector is arranged corresponding to a first liquid side of the sampling shell. According to the spacecraft on-orbit liquid working medium sampling device, accurate control over the on-orbit sampling volume of a liquid system can be achieved, and the accurate sampling volume can be obtained.

The invention discloses a spotting needle of thin layer chromatography, belonging to the field of experimental apparatus. The spotting needle comprises a needle tube and a needle head, wherein the needle head is provided with a baffle plate at a position near a needle point and passes through the baffle plate, a position where the needle head contacts with the baffle plate is sealed, and the baffle plate is 1.5 to 2.5 mm away from the needle point. During usage, when a to-be-spotted tested solution is pushed out from the needle tube to the needle head, the liquid does not rise across the baffle plate due to the obstruction of the baffle plate, so that all the to-be-spotted tested solution can be spotted onto the thin layer plate, and such phenomenon can be overcome that part of the solution rises along the outside of the needle point and then quickly evaporates due to capillarity and thus part of reference substances or reference medicinal materials dissolved in the solution are adhered at the outside of the spotting needle but cannot be spotted onto the thin layer plate. Therefore, the spotting amount is ensured to be accurate and thus the detecting result is ensured to be accurate.

The invention belongs to the technical field of medical devices, and in particular relates to a disposable urine testing sampling device. The disposable urine testing sampling device comprises a test tube and is characterized in that a tube cap is arranged at the upper part of the test tube; a through hole is formed in the tube cap; a bended tube is inserted into the through hole; a sleeve sleeves the upper part of the bended tube; an urine cup is integrally connected onto the top of the sleeve; a cover plate is integrally connected onto the top of the bended tube; and flow holes of same shape are respectively formed in the bottoms of the cover plate and the urine cup. The disposable urine testing sampling device disclosed by the invention has the benefits that hands cannot be polluted while an urine sample is fetched; urine can automatically flow into the test tube and cannot overflow; urine outside the test tube can be retained temporarily and used at any time; the disposable urine testing sampling device is simple in structure, convenient for sampling and accurate in sampling amount; and therefore, the disposable urine testing sampling device is great convenient for medical workers and patients.

The invention discloses a detection device for measuring a trace target substance. The detection device comprises a detection channel, a sample feeding channel, an auxiliary channel, a detection pipeline unit, a sample feeding pipeline unit set, a detection pump, a sampling pump set and a control unit, wherein one section of the detection channel at the downstream is configured into a detection region with a detection window; the sample feeding channel is connected to the upstream section of the detection channel to form a sample feeding bypath; the auxiliary channel is connected onto the detection channel between a connection point of the sample feeding channel and the detection region to form a sample feeding and leaking bypath; the detection pipeline unit is matched with the detection channel and is provided with a control valve; the sample feeding pipeline unit set is matched with the sample feeding channel and the auxiliary channel and is provided with a control valve set; the detection pump is connected into the upstream end of the detection channel by the detection pipeline unit and the corresponding control valve; the sampling pump set is connected into the sample feeding channel by the sample feeding pipeline unit set and the corresponding control valve set; the control unit is connected with the detection pump, the sample feeding pump, the control valve and the control valve set and is used for logically controlling movement sequences of the detection pump, the sample feeding pump set and the matched control valve, and the control valve set. A sampling and analyzing device is an optical sampling and analyzing device.

The invention discloses a chromatographic sample injector. The chromatographic sample injector comprises a cylinder body, a pushing rod and a pushing head, and further comprises a positioning part, wherein the first end of the positioning part is fixedly connected to the position, close to the pushing head, of the pushing rod, and the second end of the positioning part is movably connected to theouter wall of the cylinder body; when the pushing rod slides up and down in the cylinder body, the second end of the positioning part slides up and down outside the cylinder body; the second end of the positioning part is provided with a locking member; and when the locking member is in a locking state, the position of the second end of the positioning part relative to the outer wall of the cylinder body is locked, and the relative position of the pushing rod in the cylinder body is fixed. The chromatographic sample injector is simple in structure, and the sample volume after sampling can be ensured to be stable and does not change easily, so that the sampling amount is accurate.

The invention discloses a bioreactor auxiliary device and an operation method thereof. The bioreactor auxiliary device comprises bioreactors, a sampler, a storage and analysis device, a buffer solution bottle, a waste solution bottle and feedback supplementing pumps, wherein the bioreactors are connected with the sampler, the sampler is connected with the storage and analysis device, the buffer solution bottle and the waste solution bottle are connected between the sampler and the storage and analysis device, and the feedback supplementing pumps are connected to the bioreactors through a silica gel hose. The operation method of the bioreactor auxiliary device comprises automatic sampling operation, automatic sample storage operation, automatic analysis operation, automatic cleaning operation and automatic feedback material supplementing operation. According to the invention, operations such as full-automatic sampling, sample storage, analysis, cleaning, feedback supplementing and the like can be realized. The automation degree is high, time and labor are saved, and data analysis and regulation are accurate.

The invention discloses a high-level liquid waste sampling rod for accurate sampling based on servo control, which comprises a sampling working box. The upper end of the sampling working box is provided with a fixing seat and a mounting seat; the upper end of the fixing seat is provided with a hanging rod positioning pulling rope displacement sensor; the upper end of the mounting seat is providedwith an electric servo lifting device; the upper end of the sampling working box is provided with a pulling rope sensor wire rope, a wire rope A and a wire rope B; a hanging rod module unit is arranged on the sampling working box; and the front end of the hanging rod module unit is provided with a snap-on quick change mechanical interface device and a sampler. The sampler arranged in the high-level liquid waste sampling rod for accurate sampling based on servo control performs sampling of each layer of an organic phase, a clear liquid phase and a mud phase for quantitative accurate sampling; due to the pulling rope sensor wire rope and the hanging rod positioning pulling rope displacement sensor, real-time position monitoring is realized and accurate sampling is controlled; and the whole structure is stable, a sampling point is positioned accurately, and the sampling amount is accurate.

The invention relates to a combined passive sampler for collecting rainwater samples and extracting pollutants. The combined passive sampler structurally comprises an upper bottle body, a lower bottle body, a bottle cap, a sieve plate and a sharp opening, the bottle body is formed by connecting an upper bottle body and a lower bottle body in an involution and screwed mode, a bottle opening is formed in the top of the upper bottle body, and a sharp opening is formed in the lower portion of the upper bottle body; the bottle cap is formed by combining a sharp opening cover plate and a buoyancy cover plate through a soft connecting line. In the water sample bottle injection process, the bottle cap automatically ascends and is finally closed, sampling does not need to be finished manually, sample volatilization and inconsistency caused by untimely manual operation are avoided, sampling manpower is saved, and the uniformity of collected samples is improved; a sampling bottle adopts an upper and lower split combined structure, an upper bottle body is of an upper and lower opening structure and a sharp opening structure, gas exchange between the upper bottle body and the lower bottle body is performed through the opening structure of the upper bottle body, a specific sampling mode of 'upper water entry and lower extraction' can be realized, the step of later pretreatment of the samples is omitted, and the storage effect of the collected samples is improved; in the water sample collection process, two times of filtration are carried out at the upper bottle opening and the lower bottle opening of the upper bottle body, and the lower bottle opening can be connected with different solid-phase extraction small columns, so that the requirement for extracting various pollutants can be flexibly met, and the time for sample collection and pollutant extraction is saved.

The invention discloses a thin-layer chromatographic analyzer which highly integrates functions of sample application, drying, unfolding, color development and the like. The analyzer mainly comprisesa constant-temperature box, a fixing frame, a test tube rack, a support column and a diaphragm pump. An ultraviolet lamp and an incandescent lamp are fixedly mounted at the top of the constant-temperature box and the bottom of the constant-temperature box is fixedly connected with the fixing frame. A hot-air blower is fixed at the bottom of the fixing frame through a fan support base. The test tube rack is fixedly mounted on a sliding table 1; a capillary tube and a test tube are arranged on the test tube rack. The support column is fixed in the constant-temperature box; a sliding table set isinstalled on the support column; and an electric clamping jaw is installed on the sliding table 3 and is used for clamping the capillary tube. The diaphragm pump is fixedly installed on the inner wall of the constant-temperature box; one end is in sealed connection with a water suction pipe to suck a color developing agent from a color developing agent cup; and the other end is in sealed connection with a water outlet pipe to evenly spray the color developing agent in a mist spray manner from the water outlet pipe. The analyzer has advantages of small size, simplicity and convenience in operation, high efficiency, high safety and the like.

The invention discloses a neurology specimen sampler which comprises a sampling barrel, a one-way valve is mounted on the left side of the sampling barrel, a hose is fixedly connected to the middle of the left side of the sampling barrel, a protection assembly is arranged at the left end of the hose, a puncture assembly is arranged in the protection assembly, and the puncture assembly is communicated with the hose. A piston ring is slidably connected into the sampling barrel, an energy storage assembly is arranged between the piston ring and the inner wall of the right side of the sampling barrel, a sliding rod is fixedly connected to the middle of the right side of the piston ring, and the right end of the sliding rod penetrates through the right side of the sampling barrel; in the moving process of the needle head, the conical thorn can be driven to move leftwards, and the liquid inlet hole is exposed for sampling, so that the liquid inlet hole in the needle head is not easily attached to skin cells during puncturing, a sample is prevented from being polluted, a detection result is more accurate, a worker does not need to perform drawing operation for a long time, and the needle head is more convenient to use.