User Manual

301Pt-C ORP Electrode

User Manual

Brief Introduction

Apera Instruments 301Pt-C ORP Electrode is featured with a proprietary platinum ring ORP sensor for

fast and stable readings. The gel inner reference solution does not need to be refilled. This electrode is

designed for testing in general water solutions both in-lab or in-field.

Technical Specifications

Range

-1999 to 1999 mV

Sensor

Φ6×2.5 platinum ring

Housing

Polycarbonate

Junction

Single ceramic

Reference Electrode

Ag/AgCl

Connector

BNC

Cable length

3 Ft

Dimension

ø12*160 mm

Standard value

222 mV +/- 15 mV (at 25°C)

Operating temperature

32 to 176°F (0 - 80°C)

How to Install the Electrode

1. Find the BNC socket (where it shows pH ORP) on the pH meter; Open the rubber cap; Insert the

blue BNC connector of the electrode to the BNC socket while twisting clockwise until it’s locked.

2. There is no calibration needed for ORP electrodes. If you want to double-check the condition of

the electrode, simply test the electrode in the standard ORP solution such as 222 mV. If the

reading is within the error range (+/- 15 mV), then it is good to go.

How to Use the Electrode

1. There is a proper amount of storage solution in the cap on top of the electrode. The ORP sensor

tip is soaked in it to keep its sensitivity.

2. Before measuring, loosen the bottle cap, then pull out the electrode while twisting

counterclockwise. Place the storage bottle at a safe position.

3. Rinse the electrode with purified water and shake off excess water or blot-dry it with clean tissue

or filter paper. Never rub the sensor.

4. Insert the electrode into your sample solution and stir it for a few seconds in the solution to

remove potential air bubbles, which may cause unstable readings. Then wait for the stable

reading and take the measurement.

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301Pt-C ORP Electrode User Manual Brief Introduction Apera Instruments 301Pt-C ORP Electrode is featured with a proprietary platinum ring ORP sensor for fast and stable readings. The gel inner reference solution does not need to be refilled. This electrode is designed for testing in general water solutions both in-lab or in-field. Technical Specifications Range -1999 to 1999 mV Sensor Φ6×2.
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5. After use, insert the electrode while twisting clockwise into the storage bottle, then tighten the bottle cap. If the KCL storage solution (SKU: AI1107) in the cap is contaminated, please fill in new storage solution (other brands’ storage solution may not work with this electrode). How to Maintain the Electrode 1. 2. 3. 4. Always rinse the electrode with purified water (distilled or deionized water) before and after each test and calibration.