Hach PHC745, User Manual

Page: 15 / 26

Table 1 Cleaning solution (continued)
Contamination Cleaning solution Active component Soak time
Proteins Electrode cleaning solution for
proteins/organic
contamination Pepsin in HCl 3 hours maximum
Wastewater and
organic compounds Electrode cleaning solution,
extra strong Sodium hypochlorite 5–10 minutes
8.1.1 Clean the sleeve junction
Clean the sleeve junction when the sleeve junction does not move correctly. Refer to Figure 5 .
Note: If dried salt crystals prevent the movement of the sleeve junction, soak the probe tip in warm water to
dissolve the salt crystals.
Figure 5 Clean the sleeve junction
English 13