Prior to testing the loss of transmitted light due to scattering particles, calibrate the equipment with turbidity standards for performance confidence. Primary Formazin standards can be used to measure and determine values of all other standards. After establishing stability, the premixed secondary solutions confirm that the meters are operating properly for the best reading clarity. These turbidity standards are routinely used to verify the effectiveness in water treatment processes.

Turbidity standards, Stablcal®

Supplier: HACH

Stablcal® turbidity standards for all turbidimeters. USEPA accepted for calibration purposes. Stablcal® stabilised formazine turbidity standards are true formazine dilutions developed for use in any turbidimeter.

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Calibration Cylinder Kit, for Models 1720 E, D and C

Supplier: HACH

Turbidity, Stablcal® stabilized formazine standard, 4000 NTU, Type: Formazine, 5× 100 ml

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Tubidity standards for 2100A

Supplier: HACH

Stablcal Stabilised Formazin Turbidity Standards are true formazin dilutions developed for use in any turbidimeter.

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Standards for 2100N and 2100N IS

Supplier: HACH

Turbidity Standard, Stablcal® Turbidity Standards Calibration Kit, < 0,1 NTU, 20 NTU, 200 NTU, 1000 NTU, 4000 NTU, Type: Formazine, 5× sealed vial

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Turbidity standards for 2100 AN and 2100 AN IS

Supplier: HACH

Turbidity Standard, Stablcal® Turbidity Standards Calibration Kit, <0,1 NTU, 3 NTU, 6 NTU, 18 NTU, 30 NTU, Type: Formazine, 5× ampoules

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Turbidity standard, ULR verification kit, Stablcal®

Supplier: HACH

Stablcal® verification kit containing 0.10 NTU, 0.30 NTU, 0.50 NTU, 1.0 NTU standards (100 ml each), sililcone oil, oiling cloth and instructions is used for verification purpose only.

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Turbidity standards calibration kit for 2100Q, Stablcal®

Supplier: HACH

Stablcal® calibration standards kit, for 2100 series portable turbidimeters. USEPA accepted for calibration purposes. Stablcal® stabilised formazin turbidity standards are true formazin dilutions developed for use in any turbidimeter.

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Gelex secondary standards kit for 2100 series turbidity meters

Supplier: HACH

Gelex secondary standards kit for 2100P and 2100Q series portable turbidimeters (includes 1 sealed vial each for 0 to 10 NTU, 10 to 100 NTU, 100 to 1000 NTU).