•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com
In an testing process, it is important that the sample being tested is representative of the entire lot being evaluated. In production, this could be thousands or bags, boxes, tons, etc. Representative samples are essential, for example, when evaluating a clay deposit for mining, when testing a stockpile for use or when testing batches of powder, slurry, pelletized or pugged material for quality assurance in production.
The term representative refers specifically to the property being evaluated. For example, powders being evaluated for particle size distribution need to be sampled in such a way that the distribution of particle sizes in the sample is representative of the entire batch being tested. Or a pugged sample may be extracted are some point during a production run that is judged to be representative.
A three pan sample-splitter. Powdered clay is poured into the top and split, half going into each pan below. The cycle is repeated until the desired sample size is achieved. The objective is a representative sample for particle size distribution tests.
In Bound Links
SIEV - Sieve Analysis 35-325 Wet
By Tony Hansen