• With compact portable design
• Excellent PH meter, very accurate and durable
• This digital pen style pH meter is an ideal instrument for whatever you may need to test the pH levels
• LCD display screen: Big LCD display screen which has great waterproof performance and let you easily read the displayed value
  

 1. Remove protective cap. 2. First rinse the electrode with
distilled water and suck it with filter paper. 3. Turn the meter on
by pressing “ON/OFF” key. 4. Immerse the pH meter electrode in the
solution to be tested (should not be over the immersion line). 5.
Stir gently and wait around 30 seconds till the reading stabilizes.
6. After finishing, clear the electrode with pure water, turn the
meter off by pressing “ON/OFF” key. 7. Always replace the
protective cap after use.  

 1.Turn on PH meter 2.Disolve each buffer solution in 250ML of
distilled water 3.Immerse the electrode into the PH 6.86
solution,(under the temperature of 25) 4.Press the
“CAL”(calibration)button for 5 seconds and release -Display will
start flashing 6.86 -Wait until the display stops flashing. Rinse
the electrode with distilled water and dry it with filter paper. 5.
Immerse the electrode in PH 4.00 solution, -Press“CAL”button for 5
seconds,then press and release immediately second time -Reading
will start flashing 4.00 -Wait until display stops flashing Rinse
and dry the electrode with distilled water as before. 6.Place the
meter back to the buffer solution to test calibration.If
incorrect,please repeat the calibration 7.If approximate PH of your
test solution is known to be above 7.0,calibrate the meter using
6.86 and 9.18 solution. To do this, please follow the calibration
chart,The third step is the calibration method for 9.18 point.   

HiYi Techonology is a professional company of committed to the development of the gas detection industry, has more than 15-year experience in specializing in the research, development, manufacture and sale of gas detectors.

With the strong technical force and economic strength, company is constantly developing new products with the international advanced technology level.

We are ready for supplying professional and exact technical service and designing projects to meet local customer's needs. The independent technology from sensors to detectors enables us to afford one-stop gas detection solution service all over the world.

We always concentrate on enhancing the communication with customers, developing international cooperation, and participating in the international competition by attending many professional exhibitions all over the world ever year.

Our products can be divided into High-end Laser Methane Detector，Domestic Gas Alarms, Portable Gas Detectors, Industrial Fixed Systems, Gas analyzers, as well as gas sensors and key elements for gas detection. The products have obtained the certificates of CE, TUV, ATEX, and RoHS, and are widely used in industrial fields.

Around IOT industry, we will combine sensors, intelligent terminal, communication technology, cloud computing and geographic information IOT technology together closely, establish a complete IOT industry chain.

We are focus on the customer value oriented, combine treatment of environmental protection with energy saving technology, provide perfect solutions for smart city, production safety, environmental protection, health of the people's livelihood. Creating value for customers is our forever pursuit.

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