Portable pH meter pen type | Инструменты

Portable pH meter pen type | Инструменты

working temperature:0-40 (DEG C)

This specification product accuracy is not high, neutral export packaging, for low demand ordinary place, please friends confirm clearly, do not meet the requirements of not buy, freight according to the actual plan

Pen type acidity meter

The introduction of advanced technology and the use of imported components greatly reduce the volume, reduce costs, and maintain the original good quality, so that the use of acidity meter has been widely used. A digital pH meter is pocket acidity classic brand, with the use of simple, cheap and popular around the world, favored by the majority of users.

Main technical indexes:
Measuring range: 0.0-14.0PH
Accuracy: + 0.2PH (20 DEG C)
Resolution: 0.1PH
Operating temperature: 0 ~ 50 DEG C

Battery: 3X1.5V (AG13 button battery)

Shape size: 142mm (L) * 29mm (W) * 15mm (H)

Weight: 51 grams (even about 120g of plastic box)

The new pen does not need to be calibrated

Calibration of the pH meter:
1, the 250ml of distilled water or pure water can use calibration powder. PH electrodes immersed in pH value of mixed phosphate standard 6.86 buffer solution, and gently shake.
2, with yellow small screwdriver, facing pH pen behind the round hole, left and right rotation, you can adjust the correction potentiometer, until the display value and standard buffer solution at ambient temperature of pH value of 6.9 consistent.
3. Ibid. Insert the electrode into the standard buffer solution of pH4.00 potassium formate two potassium hydrogen phosphate.
4, after about two minutes. The display value should be within the allowable range of the error compared with the pH value of the buffer solution.
Do not stain the liquid, after the calibration with plastic wrap sealed, you can reuse, after correction, with clean water clean, if not often used, can be corrected once in 2-3 months!

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