GFS Chemicals Amco Clear™ Individual Primary Turbidity Standards, 1 L, 20 NTU

Primary turbidity standards suitable for 90° nephelometers, including Hach™ 2100A, HF Micro 100, GLI On-line instruments, and Hanna Instruments™, consist of polymer microspheres suspended in a pure, aqueous medium, and are ready to use with no mixing or dilution required. These standards feature a uniform particle size distribution that ensures consistent light scattering, enabling precise calibration down to and including 0 NTU. They are non-toxic, remain suspended without settling, and come with a guaranteed accuracy within 1%.