"One of the very best laboratories to do this work is EPL Bio Analytical Services… I have worked with them for over 15 years for various projects. I have no connection to the laboratory. My clients place the work and I do the monitoring. They have the latest in instrumentation and the Laboratory Director is an excellent analytical chemist. If there is a problem with a method, he can quickly work it out… I have never had a QA problem with the laboratory and their personnel are some of the best report writers I know."