User Guide

65 Hardness Ca

• Add 1 drop of HI 93720C EGTA solution to one cuvet

(# 1), replace the cap and invert the cuvet several

times to mix. This is the blank.

• Place the blank (# 1) into the holder

and ensure that the notch on the cap

is positioned securely into the groove.

• Press ZERO and "SIP" will blink on the display.

• Wait for a few seconds and the display

will show "-0.0-". Now the meter is

zeroed and ready for measurement.

• Remove the blank and insert the

second cuvet (# 2) into the instru-

ment.

• Press READ DIRECT. "SIP" will blink during measurement.

• The instrument directly displays concentration in mg/L of calcium

hardness, as CaCO

, on the Liquid Crystal Display.

• To convert the reading to mg/L of calcium (Ca), multiply by a

factor of 0.4.

# 1

# 2

# 1