An ultra-pure chemical sampling apparatus has an elongated sampling tube which is lowered into the liquid to obtain samples of the chemical. The sampling tube extends the depth of the liquid and holes arranged along the tube provides for a representative sample to be obtained at different depths. The...http://www.google.es/patents/US5237878?utm_source=gb-gplus-sharePatente US5237878 - Apparatus and method for sampling ultra-pure chemical
Apparatus and method for sampling ultra-pure chemical
