Bút thử PH-2 kỹ thuật số có đèn nền nhiều màu sắc tiện dụng

-Litmus paper function: original test paper function, the color of the backlight will change with the change of the PH value, just like litmus test paper.
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-Ultra-large PH measurement range: The measurement range of our product is -2.00~16.00PH, which is basically 0~14 compared to the PH on the market. I believe this product can better meet your measurement needs.
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-Reset function: Press and hold the switch button for 3 seconds in the power-on state, when the screen appears: "----" indicates that the reset is successful.
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-Three-point calibration and LCD backlight: You only need to immerse the electrode in the target solution, and then press and hold the MODEL/CAL button for 6 seconds after the reading is stable (usually 5 to 10 seconds), and it will automatically calibrate. It can be calibrated to 4.00, 6.86, 9.18, and it can be easily used for customers who need
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-ATC and data storage function: due to temperature changes, the pH value of the test liquid will fluctuate. The built-in ATC module perfectly avoids this problem. The temperature compensation range is 0~80°C. The data will be automatically saved after the battery is powered off and stored for one month.

This digital pen style PH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage, etc. And, this Digital PH Water Quality Tester is ideal for all basic water testing applications.

Parameter:
-PH:
Measuring range: -2.00~16.00PH
Resolution: 0.01PH
Accuracy: ±0.01PH
-TEMP (not standard, need to choose)
Measuring range: 0~80°C/32.0~176°F
Resolution: 0.5°C
Accuracy: ±0.5°C
-Size: 155mm*32mm*10mm
Battery: 2*1.5V Batteries(included)
Color: white, green

Steps for usage:
-Open the battery compartment on the top of the test pen and insert 2 1.5V batteries.
-Press the ON/OFF button to switch on.
-Remove the electrode protective cover and immerse the electrode in the test liquid. Note that you need to gently shake the test pen to prevent air bubbles from adhering to the glass electrode and affect the test results. After the value is stable, the result can be recorded.
-After the test is completed, you need to gently rinse the electrode in clean water to wash away the residue of the test liquid. Then use a dry towel or paper towel to gently wipe the electrode head, and finally cover the electrode protection cover, and then shut down.

include:
1 * Water quality test pen
1 * Manual (English)
3 * Calibration powder
3 * LR44 battery
1 * Protective