The Hanna Instruments HI 701-11 calibration checking set, for use with the HI 701 handheld colorimeter for free chlorine (CheckerHC), contains two liquid standards used to validate calibration of the colorimeter. The HI 701-11 contains one 10 mL vial of the 0.00 ppm odorless, clear liquid, and one 10 mL vial of the 1.00 ppm odorless, pink liquid. The standards can be used up to one year from their manufacture date.

A calibration kit has supplies that assist in the calibration of meters during lab and field use in aquaculture, water testing, hydroponics and environmental monitoring.

Hanna Instruments manufactures analytical instrumentation and supplies, including pH meters, electrodes, chemical reagents, and buffer solutions. The company, founded in 1978 and headquartered in Woonsocket, RI, meets International Organization for Standardization (ISO) 9001 standards.

What€s in the Box?

• Certified standard vial (quantity 2), HI 701-11
• Safety data sheet