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Reference Standards
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8000 Series | Solid Waste | Herbicides
8140/8141 Internal Standard/Surrogate: NPD Detector
The preparation of accurate and stable OP standards is complicated by their sensitivity to light, pH, heat, and water. Restek has spent more than four years researching OP pesticide mixtures. Our research results:
• OP standards have a maximum of 12 months shelf life due to their volatility. It is our policy to ship standards with no less than 3 months shelf life remaining.
• Solvents are assayed to ensure low water content.
• Reference mixtures are stored in deactivated amber ampules, under an inert atmosphere.
• Purity is determined by a combination of methods: GC/FID, GC/FPD, GC/NPD, DSC, and HPLC/UV.
NPD Detector:
Internal Standard: 1-bromo-2-nitrobenzene (cat.# 32279)
Surrogate: 4-chloro-3-nitrobenzotrifluoride (cat.# 32282)
Quantity Discounts
Order 3 or 4 of any one analytical reference material
product and receive a
10% discount! Order 5 or more
of any one analytical reference material product and
receive a
20% discount!
