Professional PH Tester Electronic Digital Value Test Temperature Compensation Function Water Meter | Инструменты

Professional PH Tester Electronic Digital Value Test Temperature Compensation Function Water Meter | Инструменты

Product description

The pH meter is a small and exquisite pen used to measure the production of pure water pH tap water, well water, sea water, electroplating solution, boiler water, urine, and so on. It can also be used in fish tanks, swimming pools, photographic processing, laboratory, aquaculture, food processing, hair dyes, cosmetics, and so on.

This pH meter's screen is equipped with a backlight LCD, which makes it easier to read in the dark. All of the above measurement accuracy is 0.01, so the measurement is more accurate.

operation

1, remove the protective cap.

2, using distilled water to clean the electrode, and then dried with filter paper.

3, connected to the battery box at the top of the "off" switch.

4, the pH value of the electrode dipped into the solution, soak to the immersion level. In no case can be immersed in the display level.

5, gently stirring, waiting for the stability of the reading.

6, after use, it will be turned off, using distilled water to clean the electrode and the protective cap back.

Calibration of pH meter

1, the calibration powder with 250 ml of distilled water or pure water flushes. PH electrode was immersed in pH value for 686 mixed phosphate buffer solution, and gently shake.

2, with a small screwdriver in yellow, against pH pen behind the hole, left and right rotation can adjustment potentiometer until the display value of 690 consistent with standard buffer solution at ambient temperature pH value.

3, the same as the electrode into the pH4.00 of the phosphorus stupid two potassium hydrogen phosphate standard buffer solution.

4, about two minutes or so. The value of the display and the buffer solution of the pH value should be in the range of error allowed.

Water do not dirty, after calibration with plastic wrap seal, you can reuse, after correction with clean water clean, if not often used, can be corrected once in 2-3 months!

important

The pH value of the instrument must be re calibrated in the following conditions: there is no need to calibrate the pH pen, but the correction is very simple

In the following circumstances, the pH must be re calibrated:

After calibration has been used (or placed) for a long time;

Electrode usage is particularly frequent;

Measurement accuracy requirements are relatively high.

Battery installation

If the display is fading, replace all the batteries. Pull out the battery box, replace the battery. Pay attention to the polarity of the battery.

be careful：

PH glass is fragile, do not used in military or other items to touch it, receipt of goods please immediately check pH glass is intact, if has the damage can refused to sign the receipt, contact us, thank you!

Weight: 65g

Size: 15 x 3 x 1.5 cm

Excellent appearance, very accurate, durable

Measuring pH range: 0 - 14

Resolution: 0.1 pH

Accuracy: 0.1 degrees C (20 degrees), 0.2

Operating temperature: 50 - 0 degrees C (122 - 32 degrees C)

1. We accept Alipay.

2. All major credit cards are accepted through secure payment processor ESCROW.

3. If you can't checkout immediately after the auction ends,please wait for a few minutes and retry payment. Friendly advise you to pay soon, so that we can arrange the shipment as soon as possible.

Shipping 

                                                                                                 
1. Worldwide Shipping(Except some countries). Normally, it will take 7-22 business days arrive(Sat. & Sun. & Public holiday excluded.)

2. Items are generally shipped out with 1-3 business day after your payment has been cleared (Sat. & Sun. & Public holiday excluded.)

3. Taxes and charge are not included in the item price or shipping charge. these charges are buyer's responsibility.

4. Note: We hope it arrives on time but since this is an international delivery, shipping time will be highly depended on the logistics company and local weather, customs/duties, postage, hope  you understanding.

5. If you have not received your items within 30 days from payment, please contact us. We will track the delivery information and get back to you as soon as possible with a reply. Our goal is customer satisfaction.

6.Please fill in complete consignee name & delivery address & contact information.

Guarantee

1. If you received an incorrect, damaged, defective, or item not as described, please contact us for a partial/full refund or replacement on our cost.

2. Receive the product within 7 days, we will be happy to exchange or refund for you, as long as all original packaging and accessories are in original condition.

3. If for any reason you are not satisfied with your purchase, please contact us and we will do our best to resolve it.

4. We maintain high standards of excellence and strive for 100% customer satisfaction.

Return and Refund

1. All returned items must be in the original packaging and you must provide us with the shipping tracking number, specific reason for the return.

2. If returns for product quality problems,we will refund your full winning bid amount, upon receipt of the item in its original condition and packaging with all components and accessories included, after both Buyer and Seller cancel the transaction from aliexpress. or, you may choose to have a replacement.

Feedback

 1. Feedback is very important,we hope that you can contact us immediately before you give us neutral or negative feedback,so that we can try our best to make you satisfied. A negative feedback can not solve any problems if we don't know the matter.

2. When you receive the item and satisfied with the product, please leave us positive feedback and 5 scores DSR, we will be highly appreciated. On the other hand,your feedback can be used as the shopping-references to other buyers.