Thermo Orion® pH Specialty Solutions and ORP Standards

Orion OPR standards are designed for use with gel-filled ORP/ATC Triode™ electrodes (9179BNMD and 9179BN); refillable ORP/ATC Triode electrodes (9180BNMD and 9180BN); glass-bodied ORP electrodes, (9778BNWP and 9778SC); and Sure-Flow™ ORP electrodes, (9678BNWP and 967800).

• Does not contain hazardous chemicals
• Included in the new 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 (Part No. 900011), +420mV vs. Standard Hydrogen Electrode (E_H)