General Test
  • ASTM D381 Existent Gum Content Tester

    ASTM D381 Existent Gum Content Tester

    KN-381 Existent Gum Content Tester (Steam Method) conforms to ASTM D381 Standard Test Method for Gum Content by Jet Evaporation. When testing either aviation or motor gasoline, a 50±0.5ml quantity of fuel is evaporated under controlled conditions of temperature and flow of air. When testing aviation turbine fuel, a 50±0.5ml quantity of fuel is evaporated under controlled conditions of temperature an flow of steam. For aviation gasoline and aviation turbine fuel, the resulting residue is weighed and reported as milligrams per 100ml. For motor gasoline, the residue is weighed before and after extracting with heptane and the results reported as milligrams per 100ml.

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  • GOST 7143 Ultimate Strength and Thermostrengthening Tester

    GOST 7143 Ultimate Strength and Thermostrengthening Tester

    KN-7143 Ultimate Strength and Thermostrengthening Tester conforms to GOST 1743 Greases. Method for Determination of Ultimate Strength and Thermostrengthening. It is mainly used to measure the pressure of the grease when it is displaced in the threaded pipe of the plasticizer at the test temperature, and convert it into a strength limit value, which is expressed as Pa. The appearance design of the grease strength limit tester is beautiful and generous, the structure design is reasonable, the operation is convenient, and the results are accurate

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  • ASTM D1287 PH Meter

    ASTM D1287 PH Meter

    KN-1287 PH Meter conforms to ASTM D1287 Standard Test Method for pH of Engine Coolants and Antirusts and ASTM D1121 Standard Test Method for Reserve Alkalinity of Engine Coolants and Antirusts. pH is a measure of the hydrogen ion concentration and indicates whether an engine coolant, or a solution of these compounds is acidic, alkaline, or neutral. The pH range includes values from 0 to 14. Values from 0 to 7 represent the acidic half of the scale. Values from 7 to 14 represent the alkaline or b

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  • ASTM E659 Autoignition Temperature Tester

    ASTM E659 Autoignition Temperature Tester

    KN-659 Autoignition Temperature Tester conforms to ASTM E659 Standard Test Method for Autoignition Temperature of Chemicals. A small, metered sample of the product to be tested is inserted into a uniformly heated 500ml glass flask containing air at a predetermined temperature. The contents of the flask are observe in a dark room for 10min following insertion of the sample, or until autoignition occurs. Autoignition is evidenced by the sudden appearance of a flame inside the flask and by a sharp rise in the temperature of the gas mixture. The lowest internal flask temperature at which hot-flame ignition occurs for a series of prescribed sample volumes is taken to be the hot-flame autoignition temperature of the chemical in air at atmospheric pressure. Ignition delay times (ignition time lags) are measured in order to determine the ignition delay-ignition temperature relationship.

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  • ASTM D4059 GC for PCBs in Insulating Liquids

    ASTM D4059 GC for PCBs in Insulating Liquids

    KN-4059 GC for PCBs in Insulating Liquids conforms to ASTM D4059 Standard Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography. This test method describes a quantitative determination of the concentration of polychlorinated biphenyls (PCBs) in electrical insulating liquids by gas chromatography. It also applies to the determination of PCB present in mixtures known as askarels, used as electrical insulating liquids.

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  • ASTM D7843 Membrane Patch Colorimetry

    ASTM D7843 Membrane Patch Colorimetry

    KN-7843 Membrane Patch Colorimetry conforms to ASTM D7843 Standard Test Method for Measurement of Lubricant Generated Insoluble Color Bodies in In-Service Turbine Oils using Membrane Patch Colorimetry. Insoluble deposits are extracted from an in-service turbine oil sample using a 47mm, 0.45μm membrane nitrocellulose patch. The color of the patch is then analyzed using a spectrophotometer and the results are reported as a △E value in the CIELAB scale.

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  • Analytical Balance

    Analytical Balance

    l Weighing units (g, ct, ozt, oz, gn, dwt, 1b) l Counting (Reference numbers 1/10/20/50/100) l Tare function over 100% of the capacity l Automatic calibration (external) l Below weighting on hook l Adjustable feed l Spirit level

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  • Carbon, Hydrogen and Nitrogen elements analyzer

    Carbon, Hydrogen and Nitrogen elements analyzer

    KN-5373 Carbon, Hydrogen and Nitrogen elements analyzer conforms to ASTM D5291 Standard Test Methods for Instrumental Determination of Carbon, Hydrogen, and Nitrogen in Petroleum Products and Lubricants and ASTM D5373 Standard Test Methods for Determination of Carbon, Hydrogen and Nitrogen in Analysis Samples of Coal and Carbon in Analysis Samples of Coal and Coke.

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  • Brookfield Viscometer

    Brookfield Viscometer

    Using a coaxial center structure, using a small sample adapter, each measurement requires a very small sample size, temperature control quickly and accurately. It has many measuring parameters, rich display content, convenient operation, intuitive reading, high measuring precision, stable rotational speed, strong anti-interference performance, wide working voltage and so on. can replace the same type of imported instrument

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  • Portable Chiller

    Portable Chiller

    KN-ZL Portable Chiller can be widely used in petroleum, chemical, pharmaceutical, biochemical, scientific research and other fields. This is a very popular cooling device in the world.

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  • ASTM D7097 Thermo-Oxidation Engine Oil Simulation Tester

    ASTM D7097 Thermo-Oxidation Engine Oil Simulation Tester

    K​N-7097 Thermo-Oxidation Engine Oil Simulation Tester conforms to ASTM D7097 Standard Test Method for Determination of Moderately High Temperature Piston Deposits by Thermo-Oxidation Engine Oil Simulation Test—TEOST MHT and ASTM D6355 Standard Test Method for Determination of High Temperature Deposits by Thermo-Oxidation Engine Oil Simulation Test. Deposit-forming tendencies of an engine oil under oxidative conditions are determined by circulating an oil-catalyst mixture comprising a small sample of the oil and a very small (0.1g) amount of an organo-metallic catalyst. This sample mixture is then circulated for exactly 24h in the TEOST MHT instrument over a special wire-wound depositor rod heated by electrical current to a controlled temperature of 285℃ at the hottest location on the rod. The depositor rod is weighed before and after the test and any deposit formation on the rod as well as any deposits collected from rod washings are determined. During the test, precisely controlled and directed air is caused to bathe the oil flowing down the depositor rod and, thereby, to provide opportunity for oxidation. Precision of the test is strongly influenced by the care in manufacture of the wire-wound steel depositor rods and the treatment of the coating of the wound wire, the rate of air flow, and the amount and degree of mixing of the catalyst.

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  • KN-NIR Near Infrared Spectrometer

    KN-NIR Near Infrared Spectrometer

    KN-NIR Near Infrared Spectrometer adopts advanced MEMS Fourier transform technology. Optional spectral range of the instrument (1300nm~2600nm, 1150~1700nm, 1250~2100nm) meets the needs in testing multiple indicators and research. High signal to noise ratio is possible to analyze the parameters of low content of the sample. Built in wavelength calibration to ensure smaller difference between stations difference and better long-term stability. The tester equipped with a temperature control device, which can improve the data stability.

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