In order to maintain the consistency of paint, the density of each batch of paint produced should be constant. The paint density measuring device QBB-37 paint specific gravity cup (also known as density cup) can be used to measure the density of paint and paint Accurate value, simple and effective measure of product quality.
QBB paint specific gravity cup is manufactured according to the national standard GB/T6750~86 "Paint specific gravity cup" and combined with actual production. The paint specific gravity cup is suitable for measuring the specific gravity of various paints and auxiliary materials, oils and other liquids.

| model | volume |
| QBB-37 | 37ml |
| QBB-50 | 50ml |
| QBB-100 | 100ml |