Hanna Instruments HI761-11 / 761-11 | Total Chlorine Ultra Low Range Checker HC Calibration Check Set | Aquarium Testing

Hanna Instruments HI761-11 / 761-11 | Total Chlorine Ultra Low Range Checker HC Calibration Check Set

Freshwater. Ensure your HI761 Total Chlorine Ultra Low Range Checker® HC is reading accurately with the HI761-11 Calibration Check Set. This set provides two sealed cuvettes — one zero standard and one standard chlorine solution — for easy validation and traceability of your Checker’s performance.

• Designed specifically for the HI761 Total Chlorine ULR Checker® HC
• Includes two sealed cuvettes: zero and chlorine standard
• Standard value: 200 ± 15 ppb total chlorine @ 25 °C
• Reusable with long shelf life stability
• Supplied with Certificate of Analysis
• Lot number, reference values, and expiration date provided for traceability

More Information

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FAQ

• Freshwater or saltwater? Freshwater. This calibration check set is for freshwater chlorine testing.
• Do I need this for everyday use? Not for routine testing — it’s for accuracy validation.
• How often should I use it? Every few months or when results seem inconsistent.