Apera Instruments 201-C Combination pH Electrode is an economical choice for a reliable combination pH electrode, designed for general water solutions' pH measurement in scientific research, environmental monitoring, and quality control.

Not suitable for testing in low-ion concentration solutions (e.g.: deionized water or distilled water), strong base and strong acid solutions, highly corrosive liquid, or for continuous testing in high-temperature solutions (>140°F).

Compatible with any pH meters that use BNC connectors. Temperature sensor is not built-in. Users need to have a separate temperature probe to enable ATC or manually input temperature to complete temperature compensation.

201-C Combination pH Electrode, BNC Connector

The economical choice of a reliable combination pH Electrode/Sensor/Tester

Apera's proprietary low-impedance lithium glass membrane

Equipped with a detachable probe storage cap, keeping the sensor hydrated when not in use.

Gel KCL electrolyte adopted; No need for refilling.

6-Month Warranty fulfilled by Apera Instruments
We warrant this electrode to be free from defects in material and workmanship and agree to repair or replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of SIX MONTHS from the delivery.

This limited warranty does NOT cover any issues due to:

Accidental damage

Improper use

Normal wear and tear

Transportation

Storage

Failure to follow the product instructions

Unauthorized maintenance, modifications, combination or use with any products, materials, processes, systems or other matter

Unauthorized repair

External causes such as accidents, abuse, or other actions or events beyond our reasonable control.