2Pcs Digital PH Meter Tester 0-9990Ppm TDS EC LCD Water Purity PPM Aquarium Filter Инструменты - купить

Купить 2Pcs Digital PH Meter Tester 0-9990Ppm TDS EC LCD Water Purity PPM Aquarium Filter | Инструменты

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[High accuracy]: The numbers of the pH meter range from 0.00-14.00 (PH), while the numbers of the digital EC and TDS meters range from 0 to 19990 ppm.
[TDS have lock & auto-shut off function] Conductivity meter has the accuracy of 0.1 Celsius. Dump the item about 4 seconds in the liquid to get accurate values. In order to record the number, you can also Press the HOLD keyboard.
[LCD Display]: The LCD clearly displays the data and the LCD backlight turns off automatically. Small and easy to carry.
How do I calibrate the PH meter?
STEP 1: Clean the electrode in distilled water.
STEP 2: Immerse the electrode in a standard pH 6.86 buffer solution.
STEP 3: Press the "CAL" key. Wait until the display is digitally 6.86 pH, then calibrate at pH 6.86
STEP 4: Clean the electrode in distilled water and dry. Immerse the electrode in Ph 4.00 standard buffer solution.
STEP 5: Press the "CAL" key. Wait until the display is digital 4.00 pH. Then complete the pH 4.00 calibration
STEP 6: Clean and dry electrode, place meter in standard buffer solution PH 9.18. Check that the reading is correct between 9:17 and 9:19.
Name:TDS PH Meter Set
PH Resolution: 0.01pH
Accuracy: +/- 0.05pH
TDS: 0 ~ 9990ppm
Conductivity: 0 ~ 9990us / cm
Accuracy: +/- 2%
Colour: blue + black + white
Material: plastic
Size: length about 155mm
Package Contents:
1 * PH test pen
1 * TDS test pen
1 * Instruction manual
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.