Hach-Lange LZV937 - DR 6000 additional software enzymology tests - Handbuch (Seite 43)

English 43
D-/L-lactic acid (D-/L-lactate)
Procedure for D-/L-lactic acid
1. Prepare the test according to the process specification.
2. Select STORED PROGRAMS > SELECT BY NUMBER.
3. Enter the number 2218 for the program "D-/L-lactic acid". 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.
The 5:00 timer starts. When the time elapses, two short acoustic
signals are sounded.
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 30:00 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 30:00 timer starts. When the time elapses, two short acoustic
signals are sounded.
Extinction 3 is measured in all cuvettes.
The result is indicated in g/L D-/L-lactic acid and g/100 g
D-/L-lactic acid on the display.
Program number 2218
Parameter D-/L-lactic acid
R-Biopharm AG order number Art. no. 11 112 821 035
Results information
g D-/L-lactic acid / L sample solution
g D-/L-lactic acid / 100 g sample
Carousel loading
Carousel position 1: Blank value
Carousel position 2-7: Samples 1 to 6