TESTMARK Laboratories Ltd. is a Canadian-owned, privately-held company operating in the City of Greater Sudbury and Sault Ste. Marie, Ontario, Canada. The company began laboratory operations in 1998, and is the largest independent commercial Laboratory in Northern Ontario, with over 25 full time staff, including 3 Ph.D-level scientists. The company provides organic, inorganic and biological testing to all interested parties in the environmental, industrial and government sectors.
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