User Guide

• Press READ. "SIP" will appear during measurement.

• The instrument directly displays concentration in µg/L of manga-

nese on the display.

Note: a temperature above 30°C may cause turbidity. In this case,

before zeroing and taking readings, add 2-3 drops of Dispers-

ing Agent (HI 93703-51) to each cuvet and swirl until

complete dissolution of the turbidity.

INTERFERENCES

Manganese

Interference may be caused by:

Aluminum above 20 mg/L

Cadmium above 10 mg/L

Calcium above 200 mg/L as CaCO

Cobalt above 20 mg/L

Copper above 50 mg/L

Iron above 10 mg/L

Lead above 0.5 mg/L

Magnesium above 100 mg/L as CaCO

Nickel above 40 mg/L

Zinc above 15 mg/L.

HI 93742

Iron LR/Manganese LR

• Reinsert the cuvet into the instrument.

• Wait for approximately 30 seconds and then press READ. The

display will show “SIP” during measurement.

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

chlorine on the Liquid Crystal Display.

Note: Free and total chlorine have to be measured separately with

fresh unreacted samples following the above procedure if both

values are requested.

INTERFERENCES

Interference may be caused by:

Bromine

Iodine

Fluorine

Ozone

Oxidized manganese and Chromium

In case of water with hardness greater than 500 mg/L CaCO

, shake

the sample for approximately 1 minute after adding the reagent.

In case of water with alkalinity greater than 250 mg/L CaCO

acidity greater than 150 mg/L CaCO

, the color of the sample could

disappear or develop only partially. To resolve this, neutralize the

sample with diluted HCl or NaOH.

Free Chlorine