Apera Instruments SX620 User Manual (English)

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SX620 pH Pen Tester Instruction Manual

1. Brief Introduction

Thank you for purchasing APERA INSTRUMENTS SX620 pH Pen Tester. This product is featured with

reliable and accurate measuring performance with a single-button operation in a slim body. Ideal for

measuring pH in regular water solutions, including hydroponics, aquaculture, water treatment, pools& spas,

cooling towers, beverage making, body fluid (e.g. urine, saliva). The pH probe is replaceable and suitable

for test tube measuring and other small-volume sample testing.

2. Specifications

1) Measuring Range: -1 to 15.00 pH; Temperature: 0 to 60°C

2) Resolution: 0.01 pH; Temperature: 0.1°C

3) Accuracy: ± 0.01 pH, ±1 digit; Temperature: ± 0.5°C

4) Automatic calibration: 1-3 point calibration (pH 7.00, pH4.00, pH10.01)

5) Power: 2 x CR2032 Cell Batteries

6) Dimension and Weight: 148*29*14mm / 43g

7) Waterproof rating: IP57

3. Instructions

1) Calibration: Rinse the probe in distilled water and dap off excess water with tissue paper. Dip the probe

in the standard buffer solution pH7.00. Stir gently, hold still, and wait for the reading to become stable.

Then press the CAL button for about two seconds until CAL appears on the screen. When the

calibration value 7.0 flashes, the calibration will finish after several seconds, and the meter will return to

measurement mode and the icon will appear on the screen.

2) Rinse the probe in distilled water and dap off excess water with tissue paper. Dip the probe in the other

standard buffer solution (pH4.00 or pH10.01) to complete calibration according to the steps in 1). Icon

will appear when pH 4.00 is calibrated, and icon will appear when pH 10.01 is calibrated.

3) Measurement: Rinse the probe in distilled water and dry it. Dip the probe in the sample solution. Stir gently

and wait until you receive a stable reading.

4) After measurement, rinse the probe with distilled water, dry it, and put the protection cap back on. It’s a

good practice to pour a bit storage solution that comes with kit into the protection cap when storing the

meter, since it will help keep the accuracy of the pH probe.

5) Temperature Unit Switch: When meter is turned off, hold the CAL button until the meter reboots and then

the temperature unit will be switched (˚C–˚F)

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Apera Instruments SX620 Specifications

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