ORP standard solutions allow you to test the precision of ORP electrodes. For example, by immersing the electrode in HI 7020 solution, you should read within the 200 to 275 mV range (@20°C/68°F).
- Tech Specs
Brand Hanna Instruments SKU HI7021M Weight (lb.) 1 Height (in.) 6 Prop 65 No Length (in.) 2 Width (in.) 2 UL Listed No