Hach-Lange DR 3800 User Manual - Manual (Page 137)

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Appendix A Pour-Thru Cell
CAUTION
Chemical Hazard. Do not use the Pour-Thru Cell in tests that
call for the use of organic solvents such as alcohols, toluene,
chloroform, trichloroethane or cyclohexanone. These solvents
may not be compatible with the plastic components of the
Pour-Thru Cell creating the potential for equipment damage
and chemical exposure for the analyst.
The Pour-Thru module is an optional accessory for the instrument.
The module contains a sample cell that remains in the instrument
while samples are poured through the cell by means of a funnel and
tubing. Working with the module improves measurement accuracy,
as zeroing, measurements and measurement comparisons are
completed under the same optical conditions. As the samples all
flow through the same cell, errors attributable to the different optical
characteristics of individual cells are excluded. The module is
designed to allow the sample to be introduced into the cell without
having to handle the cell in any way.
The Pour-Thru cell can be used over the entire wavelength
spectrum of the and can be oriented to provide two pathlengths:
• Approximately 1-inch cell
• 1 cm
A.1 Pour-Thru module specifications
Specifications are subject to change without notice.
A.1.1 Pour-Thru Cell Assembly
The Pour-Thru Cell Assembly must be assembled and installed
before use.
Figure 12 illustrates the assembled unit.
Note: Tubing supplied with the kit may be cut to fit as needed.
Note: If any of these items are missing or damaged, contact the
manufacturer or a sales representative immediatly.
Path length 2.54 cm (approximately 1 inch), 1 cm (0.394 inch)
Wavelength range 320–1100 nm
Rinsing volume At least 25 mL