Hach-Lange DR 6000 User Manual - Manual (Page 100)

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Expanded programs
4. Press OK to confirm.
Note: If a Favorite Program is deleted, it will stay in the User
Programs or Stored Programs.
Note: If the stored program is deleted in User Programs, it will also
be deleted in Favorites Programs.
6.3 Single Wavelength (absorbance, concentration and transmittance
readings)
The Single Wavelength mode can be used in three ways. For
sample readings at a single wavelength, the instrument can be
programmed to measure the absorbance, % transmittance or
concentration of the analyte.
• Absorbance readings: The light absorbed by the sample is
measured in absorbance units.
• % Transmittance measures the percent of the original light
that passes through the sample and reaches the detector.
• Turning on the concentration factor allows selection of a
specific multiplier for converting absorbance readings to
concentration. In a graph of concentration versus the
absorbance, the concentration factor is the slope of the line.
6.3.1 Set up Single Wavelength mode
1. Press Single Wavelength in the Main Menu.
2. Press Options for Parameter Setup.
Table 12 Options for Single Wavelength
Options Description
More For further Options
Recall measurement
data symbol Recall saved measurement data, wavelength scans or time courses, refer to section 5.3,
page 42 .
% Trans/Abs Switches from % transmittance to concentration or absorbance in reading mode.
λ Wavelength
To input the wavelength setting. Use the alphanumeric keypad to enter the reading wavelengths.
A wavelength in the range of 190–1100 nm can be entered.
Timer icon
This functions as a stopwatch. It helps to make sure that the steps of an analysis are correctly
timed (e. g. reaction times, wait times, etc., can be exactly specified). When the specified time
has elapsed, a sound is emitted. The use of the timer has no influence on the reading program.