The thermostat with a single-chamber double-glazed window, eliminating fogging and freezing, is designed to maintain temperature when determining the kinematic viscosity of petroleum products in accordance with glass viscometers in accordance with GOST 33, GOST R 53708, ASTM D445, IP 71, ISO 3104 and DIN 51366. As well as in determining the pour point of petroleum products in accordance with GOST 20287.
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