PH Meter, Digital 4 in 1 PH EC TDS Temp Meter for Water Hydroponics, Waterproof DWC PH and EC PPM Water Tester with Backlit for Nutrients Growing,Pool,Indoor Garden, Home Brewing, Aquarium, Hot Tub

Product description Dzdarren Upgraded Pro 01 -- Upgrade .Quick.

Simple.

Reliable How to Calibrate the pH meter A point calibration with ±0.1pH accuracy Step 1) Dissolve the buffer powder in oz (ml) of distilled water.

Step 2) Turn the meter on by pressing the ON/OFF button.

Step 3) Immerse the electrode into the solution, gently stir and wait at least minutes.

Step 4) Press the CAL button for seconds then release.

Device is calibrated once the display stops flashing .

B point calibration with ±0.02pH accuracy Follow steps in section A but use the buffer powder rather than .

Step immediately press the CAL button again and the reading will flash .

Step wait for the display to stop flashing before use.

C point calibration with ±0.02pH accuracy Follow steps in section A but use the buffer powder rather than .

Step immediately press the CAL button two times.

The reading will begin to flash .

Device is calibrated once the display stops flashing.