【Material】 : 304 stainless steel gravity cup adopts cylindrical design, cup mouth adopts wide opening design, which is convenient to use, one-piece molding, no blank space, good inner and outer wall finish, easy to clean 【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. 【Application】: The 50ML specific gravity cup is suitable for measuring the specific weight of various coatings, transparent paints, auxiliary materials, oils and other liquids. 【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)