Omega PHB21, Руководство пользователя

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8.
Maintenance (cont.)
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1 - For storage purpose, electrodes must be immerged at the same electrolyte’s reference, with hole(9) closed.
2 - In order to avoid mistakes during readings, the membrane (1) and the diaphragm (3), must be always clean.
3 -For cleaning, wash the electrode with commercial detergent using your fingers to clean the bulb, rinse it with
distilled water. Rest the electrode for 15 minutes into Thiourea Solution and for 15 minutes in PEPSIN..
4 - If necessary, dip the electrode for 5 minutes in HCl 0.1N and 5 minutes in NaOH 0.1N. Repeat this operation and
just after it rest the electrode for 30 minutes in 3 MKCl.
5 - In case you noticed that the internal electrolyte reference is hazel or is contaminated, proceed with a internal
clean up! Take off the internal reference by the hole(9), using a syringe and wash it internally with distilled water, by
shaking the electrode vertically. Repeat this operation for 3 times. Then refill the electrode with 3m KCL.
6 - The membrane (1)must be manually cleaned with absorbent paper or cotton, any grease can be eliminated with
benzine or any solvent.
7 -For tougher dirt, use chloride acid 0,1N and or sulficromic solution. Then leave it dipped for 12 hours in 3 MKCl
Solution.
8 - Dried membranes, must be immerged for 30 seconds in HF (1-2%) solution, for Gel renewal. Then dip it for 12
hours in 3 MKCl solution.