For many years, gold miners have used dish soap to do exactly what Nor Cal Mikie just said. Believe it or not, the surface tension of water, can, and will "float" the finer flakes of gold when doing a clean-up. Don't know about using for checking the volume in brass, but does sound logical. Just try not to create bubbles when mixing in the water.Nor Cal Mikie wrote:It's been mentioned by folks doing the H2o measuring thing that a little dish soap or alcohol in the water will work to releave surface tension and bubbles.
JMHO