PH Meter 0.1/0.01 PH High Precision Water Quality Tester with 0-14 PH Value Range

1. Rinse the calibration powder with 250ml of distilled or purified water. Immerse the pH electrode in a mixed phosphate standard buffer solution with a pH of 6.86 (or 4.0) and shake gently.

2. With a small yellow screwdriver, facing the round hole at the back of the pH pen, turn left and right to adjust the correction potentiometer until the displayed value matches the pH value of the standard buffer solution at ambient temperature of 6.9 (or 4.0).

Note:Do not contaminate the medicine. Seal it with plastic wrap after calibration, and it can be reused. After calibration, wash it with pure water. If it is not used often, it can be corrected once in March-June!

Features:

1.Suitable for any aquarium industry, fishing industry, swimming pool, spa, school laboratory, food and beverage,drinking water,etc.

2.Lightweight,compact pH meter.Completely hidden in a bag or pocket for easy daily carrying.

3.Easy to use,remove the protective cap and immerse the pH meter electrode in the solution

4.Hand-held design,convenience

Specification:

Accuracy: 0.1ph

Power supply:4 x1.5V LR44 Button Batteries(Not included)

Operating Temperature: 0-50 degree centigrade

Measuring Range: Yellow:0.0~14.0

The yellow one : test water PH

Package Includes:

1x Digital PH Meter Test Pen (batteries included)