eutech-instruments cyberscan ph 110 phmvrs232 meter User Manual

Instruction Manual   

 

CyberScan pH 11 / 110  

 

57

pH electrodes are susceptible to dirt and contamination and need to be cleaned 
regularly depending on the extent and condition of use. 

The best results, always keep the pH bulb wet, preferably in electrode storage 
solution or pH 4 buffers with 1/100 part of saturated KCl. Other pH buffers or tap 
water are also acceptable storage media, but avoid storage in de-ionised water. The 
protective electrode storage bottle or rubber cap filled with the buffer solution 
provides ideal storage for long periods. 

After measurement is complete, follow the sequence elaborated below for storage. 

1.  Wash the electrode and reference junction in deionised water.  

2.  Close the refilling hole by returning its rubber sleeve or stopper cap 

(Necessary for only refillable electrodes). 

3.  Store the electrode as mentioned above (Storage section 11.1.1), or as 

recommended by the manufacturer.  

The reference electrolyte needs to be refilled when the electrode has been used for 
an extended period, or when the internal electrolyte has dried up. To accomplish this, 
follow the procedure detailed below. 

1.  Remove the protective rubber cap or sleeve 

2.  Remove the protective rubber sleeve to expose the filling port of the 

electrode. Remove the old reference electrolyte with a syringe and a flexible 
tube. 

3.  Fill the new reference electrolyte. Add in fresh electrolyte till the level of 

refilling port. The reference electrolyte depends on your electrode.  Use the 
solution type recommended for your electrode. Replace the rubber sleeve.  

4.  Reuse the electrode. Rinse the liquid junction with deionised water and tap 

dry.  

NOTE: If these steps fail to restore normal electrode response, you may attempt to