HI7021L 240 mV @ 25°C ORP Test Solution (500 mL)

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HI7021L 240 mV @ 25°C ORP Test Solution (500 mL)

HI7021L is a quality ORP test solution made from reagent grade chemicals and used to test platinum and gold ORP electrodes. Hanna test solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution.

Prepared with reagent grade chemicals

Allows for a quick check of your ORP electrode

Air tight bottle with tamper-proof seal to ensure quality


HI7021L is an ORP test solution designed for testing the performance of ORP electrodes. When the ORP electrode is placed in the test solution the reading obtained should be within +/- 50 mV of the 240 mV @ 25°C value. This solution allows users to quickly see if their electrodes are reading correctly. Using this as a diagnostic tool, users can then decide if the ORP electrode needs to be cleaned and conditioned. The test solutions are produced in our state-of-the-art manufacturing facility using reagent grade chemicals in a temperature controlled environment.

The HI7021L bottle is labeled with

  • Product code

  • Lot number

  • Expiration date


Air tight bottle with tamper-proof seal

  • Ensures quality and freshness of solution



ORP Value @ 25°C 240 mV
Description ORP test solution @240mV (@25°C)
Package bottles
Size 500 mL
Quantity 1
Certificate of Analysis No