Hach DR 2800, Руководство пользователя, Страница: 87 / 96

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Appendix A Pour-Thru Cell
CAUTION
Do not use the Pour-Thru Cell in tests that call for the use of
organic solvents such as alcohol, 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 DR 2800
Spectrophotometer. Working with the module improves
measurement accuracy, as zeroing, measurements, and
measurement comparisons are carried out 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 oriented to provide two pathlengths:
• Approximately 1 inch
• 1 cm
These two pathlengths can be used over the entire wavelength
spectrum of the DR 2800 Spectrophotometer.
A.1 Pour-Thru Module Specifications
Specifications are subject to change without notice.
A.2 Unpacking
Remove the Pour-Thru module from its shipping carton and inspect
it for damage. The Pour-Thru Module set includes:
• Pour-Thru cell
• Stand including mountings for glass funnel and stand pipe
• Plastic tube: inside diameter
1
/
8
" for the cell inflow and outflow
• Stand pipe
• Rubber tube: Inside diameter ¼" (drain tube for stand pipe)
• Glass funnel
• Instruction sheet
If any of these items are missing or damaged, contact the
manufacturer or a sales representative immediately.
Path length 22 mm (approximately 1 inch), 1 cm (0.394 inch)
Wavelength Range 340 to 900 nm
Rinsing Volume At least 25 mL