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Section 4
4.1 Analyse Zinc with LANGE Cuvette Test
DANGER
Handling chemical samples, standards and reagents can be dangerous. Users
of this product are advised to familiarize themselves with safety procedures
and the correct use of chemicals, and to carefully read all relevant material
safety data sheets.
To analyse zinc follow the working procedure enclosed in the according Cuvette Test
LCK 360.
4.2 Quality assurance
The measurement results must be subjected to plausibility checks (dilute and/or
spike the sample).
Regular checks with corresponding standard solutions (see
Parts and Accessories on page
functioning properly and is being correctly operated.
4.3 Evaluate LANGE Zinc Cuvette Test
Note: Make sure that the instrument is programmed with the corresponding calibration data,
see
3.4 Check entered data on page
1.
Press POWER to switch on the instrument.
2.
Make sure that the correct measuring range is selected!
Otherwise press MENU. "SEL" is displayed. A flashing arrow indicates the
current measuring range (1 or 2). Press GREEN key to select measuring range.
Press MENU to get back to the measuring mode.
3.
Insert the zero-solution into the cell holder equipped with the cuvette adapter
1 cm.
Note: Make sure that the cuvette adapter is positioned correctly.
4.
Place the instrument cap with the HACH LANGE label over the cell holder to
cover the cuvette.
5.
Press BLUE key. "0.00" is displayed.
6.
Remove the instrument cap and insert the sample cuvette.
7.
Place the instrument cap over the cell holder to cover the cuvette.
8.
Press GREEN key.
9.
The result is displayed in mg/l Zinc.
Note: In case the zinc concentration is out of the selected measuring range the value for
the lowest or highest concentration is displayed and flashes. Repeat the test using the
appropriate measuring range or dilute your sample.
Note: A new zero measurement should be performed prior to each individual test series.
Operation
29) ensure that your measurement system is
24.
Section 5 Replacement
27
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