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3697 results about "Test tube" patented technology

A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top and closed at the bottom.

Closed automatic detection device for blood rheology measurement

InactiveCN101603968AAvoids problems that do not require separation from the lidSolve problems that do not require separation from the lidWithdrawing sample devicesUsing optical meansMeasurement deviceAir pump
The invention discloses a closed automatic detection device for blood rheology measurement, which comprises a test tube stand splint, a bar code scanner, a test tube stand moving device, an automatic blood sample transfer device of a test tube stand position monitor, a sampling measurement system comprising a sampling/measuring needle assembly, a needle insertion driving device, a quantitative sampling controller, an upper sphere, a heating module, a washing device and a work station conversion driving device, a blending device comprising an elastic clamping device, an elastic clamping device autorotation driving motor, an up-down moving device and a horizontal moving device, an air pump, a singlechip and the like. The device can ensure that the blood rheology measurement realizes the automatic transfer of a blood sample, automatic reversal of the blending device of the blood sample, automatic quantitative sampling, automatic measurement of the blood sample, automatic washing of a measurement device, and automatic recognition and recording under the condition of not opening a cover, realize the automatic measurement of blood viscosity under the full-closed state, can avoid the cross contamination, can also alleviate the labor intensity of the staff, improve measurement effect, and can also shorten measurement time.
Owner:重庆天海医疗设备有限公司

Preparation method for a large-area single-layer or few-layer molybdenum disulfide film

InactiveCN105272358AIncrease concentrationIncrease vapor pressureGas phaseShielding gas
The invention discloses a preparation method for a large-area single-layer or few-layer molybdenum disulfide film. The main steps of the preparation method are as follows: firstly, sulfur powder and molybdenum trioxide powder are placed in two quartz boats respectively, a substrate is placed on the quartz boat loaded with molybdenum trioxide powder, and the obverse surface faces downwards; secondly, the two quartz boats loaded with sulfur powder and molybdenum trioxide powder are placed at a bottom end and an orifice of a quartz test tube respectively; thirdly, the above quartz test tube is placed in a tubular furnace, the bottom end and the orifice of the test tube are located at the edge area and the central area of the tubular furnace respectively; fourthly, protection gas argon or nitrogen is inputted into the tubular furnace, a normal pressure is kept until the experiment is over; fifthly, the tubular furnace is heated at a certain heating speed, thus the edge area and the central area of the tubular furnace are in proper temperatures respectively, the temperatures are kept for some time, sulfur powder sublimates and reacts with gas phase molybdenum trioxide, and a large-area single-layer or few-layer molybdenum disulfide film is generated on the substrate; sixthly, the tubular furnace is cooled to the room temperature, and the preparation process is finished. The method is slightly affected by air flow, the repetition rate is high, preparation of high-quality large-area single-layer or few-layer molybdenum disulfide film can be achieved at a normal pressure.
Owner:XIANGTAN UNIV

Cleaning and drying device for test tubes for food detection

The invention discloses a cleaning and drying device for test tubes for food detection. The cleaning and drying device comprises a base plate and a cleaning tank body. The cleaning tank body is internally provided with an upper fixing plate and a lower fixing plate. The side edge of the upper fixing plate is connected with the inner wall of the cleaning tank body in a vertically-sliding manner. The lower fixing plate is rotatably connected with the upper fixing plate. A cleaning brush is arranged on the side wall of the upper end of each rotary casing pipe. A transmission gear is arranged on the side wall of the lower end of each rotary casing pipe, wherein the transmission gears are engaged with one another. A driving vertical shaft is arranged in the center of the lower end face of a fixing transverse plate, wherein the driving vertical shaft penetrates the bottom wall of the cleaning tank body. The driving vertical shaft is connected with a cleaning motor arranged on support pillarsthrough a transmission mechanism. The top end of the driving vertical shaft is rotatably connected with the fixing transverse plate and provided with a driving gear, wherein the driving gear is engaged with the transmission gears located at the outer side. The cleaning and drying device is simple in structure; the multiple test tubes can be cleaned at the same time; and the cleaning and drying device is high in cleaning efficiency, convenient to operate and mount, good in drying effect and high in practicability.
Owner:山东中捷检测技术有限公司

Multiple-test tube stirring-rotating type method and device for photochemical reaction

The invention relates to a multiple-test tube stirring-rotating type method and device for photochemical reaction. The inner parts of test tubes for photochemical reaction are simultaneously stirred by magneton, the test tubes rotate around a light source and are illuminated in rotating states, the center light source surrounded by the test tubes is filtered by chemical light-filtering liquid or light-filtering sheets, the chemical light-filtering liquid is put into an outer interlayer with a double-interlayer quartz cold trap, the cooling water passes through an inner interlayer, and the light source is placed in the inner cavity of the quartz cold trap. At most 10-20 test tubes of 10-50ml can be simultaneously inserted into the device of the invention to be illuminated; the liquid for photochemical reaction in the test tubes is ventilated to participate in the reaction or is ventilated for protecting; and the invention can ensure the uniformity of the concentration of the reaction solution and the uniformity of the received illumination, can ensure the reliability and the high efficiency of the experimental result, and is especially suitable for measuring kinetic constants such as the quantum yield, the reaction rate and the like of the photochemical reaction.
Owner:南京胥江机电厂

Full-automatic testing tube liquid sample blending device and hematology analyzer

ActiveCN104502178AQuick mixThe mixing speed used on the mixed hematology analyzerPreparing sample for investigationHematology analyzerElectric machinery
The invention discloses a full-automatic testing tube liquid sample blending device and a hematology analyzer. The full-automatic testing tube liquid sample blending device mainly comprises an X-directional horizontal feeding mechanism, a Z-directional lifting mechanism and a Y-directional uniform mixing mechanism, wherein the X-directional horizontal feeding mechanism is used for driving a test tube to realize linear horizontal movement in an X direction; the Z-directional lifting mechanism is used for driving the test tube to realize linear lifting movement in a Z direction; the Y-directional uniform mixing mechanism is used for driving the test tube to realize rotary deflection movement in a YZ plane around an X axis; the Z-directional lifting mechanism is used for driving upper and lower dragging brackets by a motor and a synchronous belt to do Z-directional vertical lifting movement along a first linear guide rail; the Y-directional uniform mixing mechanism is driven by supporting rods in the upper and lower dragging brackets to do vertical lifting movement on a third linear guide rail; the X-directional horizontal feeding mechanism is used for driving a horizontal movement plate on a second slide block by the motor and the synchronous belt to do the linear horizontal movement on a second guide rail in the X direction; and the Y-directional uniform mixing mechanism is arranged on the horizontal movement plate. With the adoption of the full-automatic testing tube liquid sample blending device, the manufacturing precision requirements are easily reduced, and the cost is low due to few parts and a designed metal plate.
Owner:SHENZHEN DYMIND BIOTECH

Eccentric ball iron pipe nodularity and wall thickness supersonic damage-free detection method

The invention belongs to the technical field of nondestructive detection of foundry industry, and relates to method for testing nodularity and wall thickness of centrifugal nodular cast iron tubes through ultrasonic and without deconstructions. The technological characteristics are that a certified orientation relationship between a probe and a tested tube can be guaranteed through a structural design of a sound path and a probe frame. The probe frame is motioned compositely and mutually with the tested tube, and coupling medium in a coupling medium chamber guarantees a dynamic coupling of the ultrasonic. A transmitting mode is adopted to test sound speed of ultrasonic shear waves inside a detecting tube wall, simultaneously an infrared temperature probe is used to test temperature of the detecting tube wall, after the sound speed of the ultrasonic shear waves is corrected by the temperature, the nodularity of the tube wall can be calculated out under normal temperature by the sound speed of the ultrasonic shear waves. The sound speed of the ultrasonic shear waves is transformed into longitudinal wave velocity, and a mode of ultrasonic pulse reflection is used to test the thickness of the tube wall. An effect and a benefit of the invention are that two projects can be tested in one test, influences of the thickness and the temperature to the test of the nodularity can be overcome, and a dynamic test can be used to test the whole surface of the testing tube, which increases testing efficiency and coverage rate.
Owner:DALIAN UNIV OF TECH

Single sample nucleic acid enclosed extractor

The invention provides a single sample nucleic acid enclosed extractor. The single sample nucleic acid enclosed extractor comprises a cabin with safety door, the inner top surface of the cabin is provided with a magnetic bead moving mechanism, the inner bottom surface of the cabin is provided with a test tube group, an accommodating tube is processed on the test tube group, and a magnetic bar protective jacket is placed in the accommodating tube; the sidewall of the cabin is provided with a fan and a ventilation port for supplying air outside; the magnetic bar protective jacket is provided with a clamp hole; the inner top surface of the cabin is provided with a test tube cover moving mechanism, and a magnetic bar central axis in the magnetic bead moving mechanism, a test tube cover opening mechanical arm central axis in the test tube cover moving mechanism and a test tube central axis in the test tube group are in the same vertical plane. The single sample nucleic acid enclosed extractor avoids cross contamination among samples, the test tube is sequentially enclosed after each step, interference between test tubes is avoided, so that high-quality and high-purity extraction result can be obtained, and nucleic acid extraction efficiency is improved.
Owner:XIAN TIANLONG SCI & TECH

Integrated pesticide residue detection pretreatment device and pretreatment method

The invention provides an integrated pesticide residue detection pretreatment device and a pretreatment method. The device comprises a cup body, a filter, a liquid divider, a jigger, a solid phase extraction column and a test tube, wherein a crushing homogenizer is arranged in the cup body, and the bottom of the cup body is connected with the filter; the liquid divider is arranged on the bottom of the filter to be used for carrying out standing stratification on filter liquid flowing out of the filter, and the bottom of the liquid divider is connected with a three-way valve; the jigger is connected with one opening of the three-way valve to be used for quantitatively collecting a target compound, and the bottom end of the jigger is provided with a second graduating valve; the solid phase extraction column is connected on the bottom of the jigger to be used for eluting the target compound; and the test tube is used for collecting eluent and is also connected with a nitrogen flow system used for concentrating the eluent. The device and the method integrate the processes of crushing, homogenizing, ultrasonic vibrating, suction filtration, liquid-liquid extraction, solid phase extraction, concentrating constant volume and the like; the treatment method is simple and has high efficiency, and the treatment device is convenient and simple, practical and portable and can be used for on-site operation.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES

Portable sample rapid joint inspection device

ActiveCN101261230AIndicator detection is simpleIndicator Detection SecurityMaterial analysis by observing effect on chemical indicatorBiological testingAbsorbent materialEngineering
The invention discloses a portable and fast sample joint inspection device consisting of a sample suction head (1) and a test tube (2) connected with the back end of the sample suction head (1), wherein, the front end of the sample suction head (1) is provided with a tubule suction nozzle (12) provided with a suction port (13) used for sucking samples; the front end of the suction nozzle (12) can be sheathed with a rubber protecting cap (14); the cavity(17) of the suction head is respectively filled from forth to back with the sample of filter material (3) and the sample of water absorbent material (4); a fixation column of test paper (5) is arranged in the test tube (2); one to a plurality of sample test paper strips (6) are fixed on the fixation column of test paper (5); the tail end of the test tube is provided with a seal cover (7) for enclosing the tested waste in the test tube (2) without leakage. When each sample test paper strip (6) enclosed and fixed in the device goes through sample suction for once and the same background detection, a plurality of indexes of the samples can be jointly detected at the same time by naked eyes in a plurality of minutes, therefore, a plurality of sample tests become simpler, safer and faster, and can avoid cross interference. The tested waste remains sealed in the test tube to be more beneficial to avoiding pathogen spreading and iatrogenic infection as well as treating waste materials in an environment protection way.
Owner:马义才
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