Overview
The QBB-50 Coating Specific Gravity Cup is a special testing instrument designed and manufactured by the SHIBO brand according to the GB6750-86 standard, which is used to determine the density (specific gravity) of liquid Paints, varnish and related products at the specified temperature. The product is made of aluminum alloy with a volume of 50ml and is suitable for accurate density measurement at 23 ° C.
Features
1. Designed and manufactured according to the national standard GB6750-86 to ensure measurement accuracy
2. Made of aluminum alloy, strong and durable
3. Volume of 50ml, suitable for standard density determination
4. Complete instructions and calculation methods
5. Reasonable design and easy operation
Principle
Coating Specific Gravity Cup calculates density by measuring the mass of the sample in a container of known volume. First, the mass of the empty cup is measured, and then the mass after filling the distillation water or sample is measured. The density value of the sample at the test temperature is obtained using the density calculation formula p1 = (m2-m0)/V, where m2 is the Specific Gravity Cup and the sample mass, m0 is the empty Specific Gravity Cup mass, and V is the volume of the Specific Gravity Cup.
Applications
Paints, varnishes, coatings and related products - Determination of density
Standards
GB6750-86、GB3186-82
Steps
1. Clean the Specific Gravity Cup with a solvent that does not leave residue after evaporation and dry it
2. Weigh the Specific Gravity Cup (with cover) at room temperature, the difference between the two weighing data must not be greater than 0.5mg
3. Fill the distillation water with no more than 1 ° C below the test temperature and place it under thermostatic conditions until the temperature is constant
4. Wipe off the overflow material and the external moisture of the cup, and immediately weigh the Specific Gravity Cup filled with distillation water
5. Sample instead of distillation water, repeability of the above operation steps
6. Calculate the sample density according to the formula p1 = (m2-m0)/V
Notice
• Specific Gravity Cup needs to be cleaned and put into the box after use
Store at room temperature
• Strictly prevent bubbles during testing
Measurement accuracy should be kept within +/- 0.5 ° C of the test temperature
• Production control should be kept within +/- 2 ° C of the test temperature
• If the Measurement accuracy is very high, the Specific Gravity Cup volume should be calculated in stages
