Low cost 2017 hot selling manual calibration low cost PH meter for water test from China
*measure range: 0.00pH-14.0 pH
*Power supply: 2*1.5V ( keep using more than 500 hours)
*operating temperature: 0℃--60℃
*calibration: manual at one point through trimmers
1.remove the protective cap.
2.Turn the meter on by pressing the “ON” key.
3.Immerse the ph meter electrode in the solution to be tested( immersion deep can not be over the immersion line )
4.Stir gently and wait until the reading stabilized.
5.After finished ,clear the electrode with distilled water , turn the meter off by pressing the “ON/OFF” key.
6.Always replace the protective cap after use.
1. Turn on pH meter
2.Immerse the electrode in pH6.86standard buffer solution.
(under the temperature of 25°C)
3. Regulate the screw with the screwdriver until the showing value on the screen corresponding to the standard solution.
4. Clean the pH meter electrode and dry it .
According to your own need , put the pH meter into 4.00 or 9.18 solution( based on top the form ) , repeat step 3
5. Put the pH meter into 4.00 or 9.18 solution to check if the showing values are correct .
If not correct , repeat step 2,3,4 calibrated again .
pH electrode maintenance
If the electrode placed long time, and electrode exposed to air,
then showing values is slow and not stable, because of electrode dry.
You should immerse the electrode into water for few hours.
When the display value is fuzzy or unshown , The battery should be replaced promptly.
Pay attention to the polarity of battery.
The instrument is warranted to the purchaser for a year from the date of purchase.
If during these periods, repair or replacement of the instrument is required,
please return the instrument to either your dealer or to our office.
The repair will be effected free of charge. ( damage is not due to negligence or erroneous operation by the user)
Note :Plese provide purchase invioce or proof before returning your instruments back .
we can do OEM service .
we can print your logo on meters , leather bags and manual .
Also we can make different packing box for you if you do not like leather bag package
We have Iso-9001 certificate to control quality .
We have CE certificate
we have Design patent certification