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GFS Chemicals Amco Clear Primary and Deluxe Turbidity Standards Kits

Highly accurate, stable and reproducible standards for calibrating turbidimeters and nephelometers. GFS Chemicals Amco Clear Primary and Deluxe Turbidity Standards Kits are the only alternative to formazin formally approved as a primary standard by the U.S. EPA.

Manufacturer:  GFS Chemicals 85518

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Catalog No. 15-426-55

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Includes: Primary Kits. Include one 250mL bottle of primary standard for each NTU value. Note: Cat. No. 15-426-24 does not include 0.02 NTU for HF Model 100.
Deluxe Kits. Include one 250mL bottle of primary standard and one sealed “secondary” standard (ss) for each NTU value, and two glass sample cuvets in a custom foam-filled cardboard carrier box.



  • Instrument-specific standards consisting of patented, polymer microspheres suspended in a pure, aqueous medium
  • Ready to use — pour right from the bottle into sample cuvets.
  • Uniform in particle size distribution to ensure consistent light scattering and precise enough to permit calibration down to and including 0–1 NTU.
  • Nontoxic and won't settle out of suspension
  • Accuracy within 1%
  • Designed for 90° white light turbidimeters, except where noted

Order Info

Additional kits available; contact your Fisher Scientific™ Customer Service Representative.



1 Year
3 x 250mL of each 1.0, 10 and 100 NTU standards
Calibration Kit
For Monitek TA1 and Hach™ 2100A turbidimeter
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