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NSI products are now available on our new website at zeptometrix.com.

Categories

Environmental Reference Materials
Food/Agricultural Science & Hemp Reference Materials
Pharmaceutical Reference Materials
- QC Reference Materials – Chemistry
- Microbiology
Environmental Wastewater Standards

Inorganics - WS PT

WS – Nitrate #PEI-195

Inorganics - WS PT

WS – Nitrite #PEI-140

Inorganics - WS PT

WS – Orthophosphate #PEI-141

Drinking Water (WS) PTs

WS – Organic Disinfection By-Products #PEO-098

Drinking Water QC Knowns

WS – Organic Disinfection By-Products #QCO-098

Drinking Water (WS) PTs

WS – Organochlorine Pesticides #PEO-005-12

Drinking Water QC Knowns

WS – Organochlorine Pesticides #QCO-005-12

Drinking Water (WS) PTs

WS – Organonitrogen Pesticides #PEO-005-3

Drinking Water QC Knowns

WS – Organonitrogen Pesticides #QCO-005-3

Drinking Water (WS) PTs

WS – Oxygenates #PEO-075

Drinking Water QC Knowns

WS – Oxygenates #QCO-075

Drinking Water (WS) PTs

WS – PCBs #PEO-003

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