ORP Buffer Solution and Electrode Test Kit

Electrode testing kit and buffer solution for HM Digital ORP-200 meters.

£23.53 £19.61
Out of stock
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This is HM Digital's ORP buffer solution and electrode test kit, which is used to calibrate the ORP-200 meter as well as check the condition of the ORP probe itself. 

This kit includes ten powder pillows; five ORP +92mV sachets and five ORP +260mV sachets. This also comes with three 100ml bottles which can be reused and preparation directions. 


ORP +92mV (pH 4.0/Quinhydrone)
Potassium hydrogen phthalate (red dye) (50%)
Quinhydrone (50%)

ORP +265mV (pH 7.0/Quinhydrone)
Sodium phosphate dibasic
Potassium phosphate monobasic (yellow dye)


  • Accuracy: +/- 0.02 at 25 °C
  • Total quantity: 1 litre
  • Made in Korea
  • NOT FOR STORAGE. To store, use ORP storage solution
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