Thermo Scientific Orion* ORP Standards for Redox/ORP Electrodes

Measure ORP simply and accurately with Thermo Scientific™ Orion™ ORP Standards for Redox/ORP Electrodes. Orion OPR standards are stable for up to a year (unopened) and can be used directly from the bottle with no mixing or diluting.

• Does not contain hazardous chemicals
• Included in the ASTM ORP method
• Used as relative mV standard to calibrate the offset of sample
• +220mV vs. Ag/AgCl using 4M KCl saturated with AgCl filling solution (246-23953), +420mV vs. Standard Hydrogen Electrode (EH)
• Designed for use with gel-filled ORP/ATC Triode electrodes (246-48463 and 246-24808); refillable ORP/ATC Triode electrodes (246-48466 and 246-24811); glass-bodied ORP electrodes, (246-48544 and 246-25720); and Sure-Flow ORP electrodes, (246-48517 and 246-25474)
Image(s) are representative of the product group and not necessarily the individual product.

mV: +420 mV vs. standard hydrogen electrode (EH)
mV: +220 mV vs. AG/AgCl electrode using Silver Chloride fill solution
Size: 475 mL

mV: +420 mV vs. standard hydrogen electrode (EH)
mV: +220 mV vs. AG/AgCl electrode using Silver Chloride fill solution
Size: 5 x 60 mL