Hach PHC725 - Fill the Probe

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
Blockage of porous
pin/diaphragm
reference junctions
Electrode cleaning solution
for porous pin/diaphragm
reference junctions
Thiourea 3 hours with stirring
or until the porous
plug becomes white
8.2 Fill the probe
Add electrolyte filling solution to the probe regularly to make sure that the electrolyte flows from the
probe to the sample. Refer to Figure 4. Make sure to use the correct filling solution (saturated KCl).
Note: If the dispensing tip becomes clogged, remove the dispensing tip and soak the tip in warm water. Then, fully
dry and assemble the tip again.
Figure 4 Fill the probe
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