Drinking water PH test pen

PH meter calibration:
1, a pack of 6.86 correction powder against the 250ML water, and gently shake. Put the pen on detection of pH value of the solution, if 6.8 pen is.
2, if the display deviated from 6.8 with a small screwdriver adjustment potentiometer (behind the hole until the display matched with standard buffer solution at ambient temperature pH values. Don't leave the water when the correction pen!
Note:
In the following cases, pH must be recalibrated:
After calibration has been used for a long time (or place);
The use of special frequent electrode;
The measurement accuracy is relatively high.

1,  Q:Are you manufacturer ?

A:Yes, we are the manufacturer with continuous and improved R&D, production, sales and service supply.

2,  Q:What’s your main products ?

A: Our products is water softeners, control valves, RO water purifiers, housing filters ,all kinds of filter components and so on

3,Q:Can I get your price list ?

  A: Yes, sure. In order to send you our available offered price, please choose the products and let us know the product model and requirement in detail.

4,Q: What’s your after-sales policy( The terms of  guarantee) ?

  A: Different products, different guarantee policy.

The time of quality guarantee: 1-3 year

5, Q: What’s your payment policy?

  A: Samples(Less than 4000USD):  100% in advance via T/T or West Union

Formal order: 30% payment in advance via T/T as deposit payment and balance payment will  be done against  the Copy of B/L

L/C payment is also available

6,Q:  Can I get your products with our logo and design ?

 A: Most of products are OEM or ODM with your logo and brand not including the control valves(  Keman brand valve)

Drinking water PH test pen