Portable Ph Test Pen Ph Acidimeter Automatic Temperature Supplement ph Tester

Yiwu Sihui Electronics Firm 14yr.

Contacts:

Yang JuxianChat

Mobile:

86-13516927842

E-mail:

yangjuxian18671@163.com

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Yiwugo official customer service X

Whatsapp:

Email： yiwubuy@yiwugo.com

Description

This product is our company's neutral packaging product.

Miniature LCD pH Meter, with the introduction of advanced technology and the use of imported components, has greatly reduced the size and cost, while maintaining the original high quality, making the use of pH meters more widespread. The Miniature LCD pH Meter is a classic brand of miniature LCD pH meter, which is popular worldwide for its high stability, high reliability, ease of use, and low price, and is deeply favored by a wide range of users.

Main Technical Specifications:
Measurement Range: 0.00-14.00PH
Accuracy: ±0.2PH ±0.1PH (20°C)
Resolution: 0.1PH
Working temperature: 0°C to 50°C

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

Dimensions: 142mm(L) × 29mm(W) × 15mm(H)

Weight: 48g (including the plastic box: 100g)

Professional Tip:

The thinner the glass of the glass electrode, the higher the accuracy.

2. The advantages of calibration powder: The shelf life of calibration powder is 5 years, while calibration liquid will form moss within a month even if it is not opened. In addition, the calibration standard requires diluting with 250ml of distilled water (available in supermarkets), but the calibration liquid bottle only contains about 20ml, which does not meet the requirements. Moreover, the bottle mouth is too small to fit the pen when calibrating inside the bottle, and calibration liquid that has been opened can only be used for 15 days before it becomes ineffective. Therefore, we do not recommend using the pre-mixed bottle of calibration liquid.

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Note: The warranty period is one year for normal use. If the damage is caused by human error, the buyer is responsible for the postage and other repair costs.

The glass electrode of the pH meter is quite fragile! Please do not touch! Damage to the glass electrode is not covered by the warranty!

No pH pen is perfect without calibration, but calibration is simple.

In the following circumstances, the pH meter must be recalibrated:
After calibration, it has been used (or placed) for a long time.
The electrodes are used particularly frequently.
Measurement accuracy is required to be relatively high.

④ New pens do not need to be calibrated when you buy them.

Calibration of a pH meter:
1. Dissolve the calibration powder in 250ml of distilled water or pure water. Immerse the pH electrode in a mixture of phosphate buffer solution with a pH value of 6.86, and gently shake it.
2. Use the small yellow screwdriver to turn the dial on the back of the pH pen, left and right, to adjust the calibration potentiometer until the display value matches the pH value of 6.9 of the standard buffer solution at the ambient temperature.
3. Insert the electrode into the pH 4.00 potassium phosphate buffer solution.
4. After about two minutes, the display value should be within the allowed error range compared to the pH value of the buffer solution.
Do not contaminate the solution, seal the opening with plastic wrap after calibration, and it can be reused. After calibration, use pure water to clean.

Clean water wash clean.If you don't use it often, you can adjust it every 2-3 months!

How to maintain a pH pen:

If it's not used for a long time, you can soak the pH pen's electrode in pure water for about half a month, and then insert it into a disposable cup!

Steps:

1. Remove the protective cover.
2. Turn on the switch located in the battery compartment.
3. Insert the pH meter into the liquid to be measured until the liquid reaches the "immersion line". If conditions allow, you can immerse the solution slightly above the "immersion line".
4. Stir the solution gently and wait for about two minutes. Read the display value.
5. Use up. Clean the electrodes. Turn off the switch. Put on the protective cover.

Update time：20240908203508

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