Calculator
Coating dispersion and solids calculator
Water or solvent needed to disperse a ready-mix powder at a given solids concentration.
Result
- Total dispersion
- 10.333 kg
- Vehicle to add
- 8.783 kgPurified water or solvent
- Vehicle volume
- 8,783 ml
- Dispersion ratio
- 1 : 5.67powder to vehicle by weight
Formula
total dispersion (kg) = powder (kg) ÷ (solids % ÷ 100) vehicle = total dispersion − powder
Why this number matters
A ready-mix grade is supplied dry and dispersed on your side. The solids concentration you choose is a trade. Higher solids means less water to evaporate and a shorter run, but a thicker dispersion that is harder to pump and easier to block a gun with. Lower solids sprays cleanly and takes longer. Most aqueous work sits between 12 and 20 percent.
Where it goes wrong
Disperse under moderate shear and let the dispersion stand long enough for entrapped air to come out before spraying. Air in the line reads as spitting at the gun and shows up on the tablets as spray marks.
Other calculators
Every grade page carries the process parameters it was developed on, so you can start from a known point rather than a calculated one. Browse the grades.