Add Kcl Crystals To The Probe - Hach PHC725 User Manual

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8.3 Add KCl crystals to the probe

The filling solution in the probe contains crystals of potassium chloride (KCl) that keeps the filling

solution saturated with KCl. When the sample temperature is more than 60 °C (140 °F), more

crystals are necessary to keep the solution saturated with KCl. Add more KCl crystals when the level

of crystals above the glass bulb is less than 0.5 cm (0.2 in.), or when the sample temperature is more

than 60 °C (140 °F). Refer to

with the crystals to help move the crystals through the filling hole. Refer to

Figure 5 Items to collect

1 Plastic pipet

2 Measuring scoop

3 KCl crystals

Temperature

60 °C (140 °F)

70 °C (158 °F)

80 °C (176 °F)

90 °C (194 °F)

100 °C (212 °F)

Figure 5

and

Table 2

Table 2 KCl quantity at high temperatures

KCl quantity

0.5 g (0.5 cm (0.2 in.))

0.625 g

0.750 g

0.875 g

1.0 g (1.0 cm)

for preparation. Mix some of the filling solution

4 Mixing bottle

5 Saturated KCl solution

Figure

English 13

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Phc72501