E-mail: michael@shboqu.com   |   Expert in Water Quality Measurement and Water Treatment Project

Home  > INFO CENTER  > 

How to calibration ORP meter

How to calibration ORP meter

2019-09-17

About ORP Meter

ORP meter can be used without any calibration. It can be used directly. If there is any doubt about the quality or test result of ORP electrode, just check the ORP value in standard solution.

 

Solution 1: Use standard solution

Hydroquinone: pH4.01

Add 3g Hydroquinone reagent to 500mL of pH 4.01 buffer and stir 15 minutes;value as below


Temp

ORP value

20C

+268mV

25C

+263mV

30C

+258m


Hydroquinone: pH7.0

Add 3g Hydroquinone reagent to 500mL of pH 7.00 buffer and stir 15 minutes;value as below


Temp

ORP value

20C

+92mV

25C

+86mV

30C

+79mV


Note:ORP standard solution can not be used for long time . so as to avoid failure, it is generally only used in same day.

 

Solution 2

ORP value is less 200mv in deionized water





               

               

               

               


Chat Online 编辑模式下无法使用
Chat Online inputting...