Scope The instrument complies with gb / t265-88, astm d445 standard, measuring liquid petroleum products (newton liquids) kinematic viscosity, in units of m2 / s, usually mm2 / s in practice. Kinematic viscosity of the liquid at a constant temperature measured kinematic viscosity and density of the product at the same temperature of the liquid. Features 1. Using cascade spiral refrigeration technology, refrigeration speed, high double-loop design, reliability 2, can simultaneously detect two samples, user-friendly operating parallel samples 3, using dewar design, low temperature fogging 4, using split design, easy maintenance Technical parameters 1, cooling mode: compressor refrigeration 2, temperature control mode: automatic temperature control; 3, temperature range: -60 ~ 20 ?; 4, temperature accuracy: ± 0 1 ?; 5, the heating power: 150w;