**Calculation method of specific gravity cup density: P=(m2-m1a)/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) **The cup body is made of high-quality stainless steel with precision machining, and the inner and outer walls have a good finish **The specific gravity cup is equipped with a tight cover with a small hole in the middle, and the test accuracy is high without air bubbles **The specific gravity cup is suitable for measuring the specific gravity of various coatings, auxiliary materials, oil and other liquids **Cylindrical design, the cup mouth is designed with a large opening, easy to use and clean