Yieryi Digital TDS Meter Filter Measuring Water Quality Purity Tester Water tds meter

Product Feature:

• Test the quality of various water ensuring you are enjoying the best quality water.
• Ideal for using in the following situations: drinking water water filters hydroponics aquariums food&coffee pools&spas.
• Data hold. Auto temperature compensation.
• Come with a leather case.

Packing list

• 1* tds-3 meter
• 1*english user manual
• 1*leather bag

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!​

Shen Zhen YIERYI Technology Co., Ltd established in 2012 and are located in Economic Development Area, Shen Zhen City, Guang Dong Province, enjoying an ideal geographic position with convenient facilities, excellent craftsmanship and complete testing methods.
We are a professional manufacturer of high quality Portable Refractometer for sugar,brix,Alcohol,Salinity,milk wine,Engine Fluid Glycol and water ph meter soil meter meter .etc.. Our Factory have attained ISO9001:2008 Quality System Certification. Our products have ROHS and CE Certification, our other some products also have type patent.

We started exporting from 2013, At present, our factory sells our products to Europe, America, Southeast Asia and the Mid-East. Our annual sales volume are $1 Million - $2.5 Million. Our products are also sold to different big and medium cities in China and are warmly welcomed by our customers.
Our factory always attaches great importance to technological innovation and has been recruiting professional staff regularly. We also cooperate with research institutions to develop new products. To meet customers' high level needs, we always adhere to the enterprise spirit of "Unity, Industriousness, Exploration and Innovation". To reward our customers through our persistent pursuit for high quality products and first-class services, we wish to cooperate with customers from various circles to create a prosperous future together.