The proficiency testing studies help improve quality and comply with regulations. Order the NSI PT Express™, our on-demand proficiency testing, when you have an immediate need for proficiency test results.

These environmental chemistry drinking water proficiency tests are designed for identification of target chemicals in drinking water.

Environmental Chemistry Drinking Water PT Express samples may take 7 to 10 business days to ship. If you need the samples sooner, please call NSI at 1-800-234-7837 to expedite your order.

The sample design will satisfy PT reqµirements for the following analytes:
Aldicarb: 15 to 100 µg/L
Aldicarb sulfone: 15 to 100 µg/L
Aldicarb sulfoxide: 15 to 80 µg/L
Baygon: 30 to 140 µg/L
Carbaryl: 15 to 100 µg/L
Carbofuran: 15 to 150 µg/L
3-Hydroxy carbofuran: 15 to 80 µg/L
Methiocarb: 30 to 140 µg/L
Methomyl: 15 to 100 µg/L
Oxamyl (Vydate): 15 to 100 µg/L