Shear Stability Tester
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Lubricants are often subjected to mechanical shearing, for example in automotive engines. This shearing causes lubricants to lose their viscosity. When subjected to sufficiently large number of cycles of shear, viscosity may drop below acceptable levels and may call of replacement failing which surfaces may become prone to higher wear. Even lubricants that have consistent viscosity through a wide temperature range (high viscosity index) may still be susceptible to loss of viscosity when subjected the mechanical shearing. Shear Stability Tester is an instrument used to determine an oils ability to retain its viscosity over a number of cycles of shear. The test oil is first measured for its initial viscosity after which it is subjected to shearing in intervals of 30 cycles. Viscosity is measured and compared to the oils initial viscosity following 30, 90 and 120 cycles. Oils that show a lower drop in viscosity over the duration of test are said to have better shear stability than oils that exhibit a relatively higher drop in viscosity. Features Floor standing designIncluded safety enclosure Options Recirculating chiller (if no water line is available)
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Biovision Services is a well known suppliers of advance technology Fume Hood from India.
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We have a complete devout in developing highly demanded Foundry Sand Testing Machine. We bring forth the highly versatile and next generation equipment that is widely acclaimed for its maintenance free design. The offered equipment is fitted with innovative components and demanded widely for measuring the permeability number of sand.
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Features Fume Hood is used to protect lab environment and operator during general chemical applications .It actively protects operator from inhaling toxic vapors and dramatically reduces the risk of fire and explosion. By installing proper filter, it can also protect environment.. Advantage 1. UV Lamp for sterilization. 2. Motorized front glass window. 3. Adjustable air speed: 9 levels. 4. Alarm when filter working time 3500 hours. 5. With air velocity memory function in case of power failure. 6. Back side air compensation, to avoid turbulence in work area. 7.10°slope front ergonomics design, fatigue-free working posture. 8. Microprocessor control system, LED display.LED display filter working time. 9. Transparent side glass windows maximize light and visibility inside the cabinet, providing a bright and open working environment. Model FH1000(X) FH1200(X) FH1500(X) FH1800(X) Material Exterior Body: Cold-rolled steel with anti-bacteria powder coating. Work table:Chemical resistant phenolic resin Max Opening 520mm Work Surface Height 750mm Blower Built-in centrifugal blowers; Speed adjustable with 9 levels Air Velocity 0.3~0.8ms Noise ≤60dB
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