Hach-Lange DR 5000 drinking water analysis, supplementary software LZV571 - Manual (Page 11)

11
Working procedures
2.2 Organic loading (SAC)
Principle
The parameter "organic loading” can be determined from a sample
by measuring the intrinsic absorbance, that is without using
reagents. The spectral absorbance coefficient is determined in m
-1 .
Range of application
Drinking water, surface water, wastewater
Measuring range
0–20 m -1
Accessories
• Spectrophotometer (254 nm)
• 50 mm rectangular cuvette (QS)
• Sipper module: 50 mm pour-through cuvette (QS)
2.2.1 Procedure Organic loading (SAC)
1. Select Stored Programs in the "Main Menu". Select test
number 902 .
2. Insert the zero cuvette (distilled water) in the cell compartment.
Close the cell compartment. Touch
Zero .
3. Insert the sample cuvette containing the first sample in the cell
compartment and close the cell compartment. Touch
Read .
The result is displayed.
Note: Analysis of additional samples: Repeat working procedure from
point 3.
2.2.1.1 Executing the test with the sipper module
Information about the installation, module configurations and
sample introduction of the sipper module can be found in the user
manual of the DR 5000 Spectrophotometer (15.3.3. Installation
Sipper Module, page 133).