Ready-to-use SpecCheck Secondary Standards Kits include four 10-mL (1-inch) sealed glass cells with a blank and three different standards within the typical testing range, instructions, plastic case and Certificate of Ana...

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Ready-to-use SpecCheck Secondary Standards Kits include four 10-mL (1-inch) sealed glass cells with a blank and three different standards within the typical testing range, instructions, plastic case and Certificate of Analysis. SpecCheck Standards are computer-formulated and have a two-year shelf life from date of manufacture.



  • Ready-to-use SpecCheck Secondary Standards Kits include four, 10 mL (1 inch) sealed glass cells with a blank and three different standards within the testing range of 0-2.0 mg/L Cl₂ (Low Range), instructions, plastic case and Certificate of Analysis.
  • Used to confirm consistent instrument response.
  • Vials are filled with gels that simulate the test color at various concentrations.
  • SpecCheck Standards are computer-formulated and have a two-year shelf life from date of manufacture.
  • Hach SpecChecks are non-hazardous and do not require an SDS.

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