Analytical Pesticide Technology Laboratories, Inc. (A.P.T. Labs, Inc.) was formally known as A & S Environmental Testing, Inc.. The company was established in August, 1986 offering both inorganic and organic analyses, specializing in pesticide residue analysis. In February, 1995 the company changed it's name to APT Labs, Inc. and moved into it's new facility in Wyomissing, PA. (a suburb of Reading, PA.).

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