WAGNER RAPID RH - Optional Accessories for the Rapid RH; Portable Ph Meter

9
B. If the electrode’s glass ball has been damaged by a solution or the
liquid junction has been blocked by a solution, the pH electrode will
become less sensitive, function slowly, or give incorrect pH readings.
a. If the glass ball has developed solution deposits: Soak the
electrode in a solution of 0.1 ml/L hydrochloric acid dilute for
24 hours (to make: top off the 9 ml of Acid Hydrochloric Dilute
with pure water to 1000 ml); wash the electrode with distilled
water; then soak the electrode in the protective solution for 24
hours. If the electrode has more serious deposits: Soak the
electrode in 4% HF (hydrofluoric acid) for 3 to 4 minutes; wash
the electrode with distilled water; then soak the electrode in
the protective solution for 24 hours.
b. To clean the electrode glass ball and liquid junction:
PROBLEM:
CLEANING AGENT:
Inorganic metallic oxide
<1 mol/L diluted acid
Organic oil
Diluted detergent (weak alkaline)
Resin macromolecule
matter
Diluted alcohol, acetone, or ether
Protein blood ball
sedimentation matter
Acidic enzyme solution (e.g.
Saccharated Yeast Tablets)
Pigments
Diluted sodium hypochlorite
disinfectant or peroxide
10. Optional Accessories for the Rapid RH
®
Portable
pH Meter
A. 201-C# pH electrode (plastic shell + 1 meter of wire).
B. Calibration buffer solutions (pH4.00, pH7.00, and pH10.01 types).
Size: 50ml/bottle; 250ml/bottle; and 500ml/bottle.