Hach-Lange LZV937 - DR 6000 additional software enzymology tests - Handbuch (Seite 36)

English 36
Acetic acid (acetate) and acetic acid (S)
Procedure for acetic acid
1. Prepare the test according to the process specification.
2. Select STORED PROGRAMS > SELECT BY NUMBER.
3. Enter the number 2205 for the program "Acetic acid". Confirm with
OK.
Enter the number 2206 for the program "Acetic acid (S)" with creep
monitoring. Confirm with OK.
4. Press START to start the program.
5. Set the blank value cuvette to carousel position 1.
6. Set the sample cuvettes to carousel positions 2-7.
7. Press READ CAROUSEL.
Extinction 1 is measured in all cuvettes. R1 is shown on the display.
8. Pipette the reagent into the blank value and sample cuvettes
according to the process specification.
9. Press READ CAROUSEL.
The 3:00 timer starts. When the time elapses, two short acoustic
signals are sounded.
Extinction 2 is measured in all cuvettes. R2 is shown on the display.
10. Pipette the reagent into the blank value and sample cuvettes
according to the process specification.
11. Press READ CAROUSEL.
The 15:00 timer starts. When the time elapses, two short acoustic
signals are sounded.
Extinction 3 is measured in all cuvettes.
Note: For program 2206 acetic acid (S) with creep monitoring,
extinction 3 is measured six times in order to verify the stability of
the value and to preclude a subsequent creep reaction.
The result is indicated in g/L acetic acid and g/100 g acetic acid on
the display.
Program number 2205 2206
Parameter Acetic acid Acetic acid (S)
R-Biopharm AG order number Art. no. 10 148 261 035
Results information
g acetic acid / L sample solution
g acetic acid / 100 g sample
Carousel loading
Carousel position 1: Blank value
Carousel position 2-7: Samples 1 to 6