Elevate your coffee breaks with this expansive 3-tiered, 14-compartment cup, condiment, and snack organizer, eliminating chaos and unusable items 301Pt-S ORP Combination Electrode, 8pin Connector Compatible With Apera 400 400s Series Meters The Apera 301Pt-S Combination ORP Electrode is equipped with a high-quality platinum ORP sensor and gel KCL electrolyte (no need for refill), suitable for regular water solutions testing and wastewater treatment. Apera Instruents, LLC-AI481 TN400 Portable Turbidity eter, Infrared... This electrode has a 6-Month limited fulfilled by Apera Instruments, LLC. With the 8-pin connector, the electrode is compatible with Aprea's PH400, PC400, PH400S, PC400S meters. 6-Month fulfilled by Aprea Instruments Orp Meter 301Pt-S OP Combination Electode, 8pin Connecto, Compatible Ring Water Sensors