Calcium Hardness CAL Check™ Standards - HI96720-11

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Calcium Hardness CAL Check™ Standards - HI96720-11


The HI96720-11 Calcium Hardness CAL Check Standards provide a simple solution to calibrating and validating the compatible HI96720 portable photometer. This high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a certificate of analysis. The certificate of analysis provides the lot number, reference values, and expiration date for traceability when certifying the HI96720 photometer.

Supplied with Certificate of Analysis

Standard value of 1.50 ±0.07 mg/L CaCO3 @ 25°C

Reusable with long shelf life stability


HI96720-11 is a high quality set of calibration standards that allows users to validate and calibrate the calcium hardness range found in the compatible HI96720 portable photometer that has a 0.00 to 2.70 mg/L (ppm) CaCO3 range. The HI96720-11 includes one sealed “A” cuvette for zeroing the meter and one “B” cuvette that is used to validate or calibrate. The expected reading from the “B” standard is 1.50 ±0.07 mg/L CaCO3 @ 25°C. The calibration set is produced in our state-of-the-art manufacturing facility using reagent grade chemicals in a temperature controlled environment.


Supplied with Certificate of Analysis

  • Product code

  • Lot number

  • Expiration date

  • Standard value @ 25°C

  • Reference meter NIST traceable


Provided storage containers

  • Light tight

  • Protects from accidental breakage


Validation and calibration of the calcium hardness range for the HI96720 portable photometer is quick and easy with the HI96720-11 CAL Check Standards.

cal check

Package Sealed standards: 0.00 and 1.50 mg/L
Quantity 1 set