Digital PH Meter, 5 in 1 Water Quality Tester with Back light, PH/TDS/EC/Salinity/Temp Meter with ATC, 0.01 Resolution High Accuracy Pen Type Tester, for Drinking Water, Aquarium, Spas

Product Description

• Please try to avoid using this pH meter to measure concentrated acid or alkali solution. Otherwise, its accuracy and service life will be affected.
• After the pH meter is turned on, the probe will detect the pH value of the air or the residual solution on the surface of the sensitive bulb, so the
• pH reading will appear irregular jumps, which is normal.
• It is normal for readings to fluctuate up and down during the test. Never take a reading immediately after placing the probe in the solution. To read a pH meter, always wait until the reading stabilizes.
• After each measurement, rinse the probe with distilled water or pure water for 5-10 seconds, and dry it before measuring the next solution. Otherwise, the results will be inaccurate.
• Sensitive bulbs are made of very fragile glass. Do not touch with hands or other hard objects, and do not use this pH meter to test solutions above 50 degrees Celsius.
• If the electrode placed long time, and electrode exposed to air, then showing values is slow and not stable, because of electrode dry. You should immerse the electrode into water for few hours and the re-calibrate the meter before use.

What Comes in The Parcel:

• 5 in 1 Water Quality Tester
• 1 x Calibration kits
• Operating Instructions

Features:

Automatic calibration

Backlit LCD Screen

IP67 Waterproof

Automatic shutdown

Easy to use

Lock value/temperature switch

Press the "ON" button to power on, touch the "HOLD/TEMP" button to lock the value, and press and hold "HOLD/TEMP" to switch the temperature unit.

Use mode switch

Press the "ON" button to power on, touch "MODE/CAL" to switch to other modes.

TDS/EC Calibration

Switch on the instrument, put the instrument into the calibration solution, adjust to the corresponding mode that needs to be calibrated, press and hold the MODE/CAL key for 6S, if the calibration value and the calibration solution do not match, press the up and down keys to calibrate the value. (Long press to speed up the adjustment)

Quickly and accurately calibrate pH meters

1. Before calibration, add pH4.00/pH6.86/pH9.18 buffer powder to a container with 250ml distilled water and stir until the powder is completely dissolved

2. Press the "ON/OFF" key to turn on the pH meter and switch to pH mode

3. Put the electrode into the pH6.18 standard solution and wait for the reading to stabilize (usually 5~10 seconds)

4. Press and hold the MODE/CAL key for 6 seconds and release it until the pH6.18 reading no longer flashes and the pH6.18. calibration is complete.

5. Repeat the above steps to complete the pH4.00/pH9.18 calibration in sequence.

NOTE: Always strictly follow the calibration sequence of pH6.18, pH4.00, pH9.18. Otherwise, the calibration result will be inaccurate.