【Accurate measurement】: The pycnometer is equipped with a tight lid, the excess sample material can overflow from the central vent hole, and the accuracy of the bubble-free test is high. The measurement error is between 1 mg (0.001%). 【Durable】 : the specific gravity cup body has a thickness of 1.3mm, thick material, durable and durable, no bubbles, high test accuracy. Equipped with an airtight lid with a small hole in the center to discharge excess test liquid. 【Specific gravity cup density calculation method】: P=(m2-m1)/v1; m1—weight of empty specific gravity cup (g), m2—total weight of filled sample and specific gravity cup (g), V1—volume of specific gravity cup (g) 【Material】: : the cup body is made of 304 stainless steel through precision machining, with strong corrosion resistance and oxidation resistance. Not only does it have a bright appearance, but it also has a structured interior. 【Application】: The specific gravity cup is suitable for measuring the specific gravity of various coatings, auxiliary materials, oils and other liquids.