8
DR 5000 Pour-Thru Cell Kit Installation
Cleaning the Pour-Thru cells
Important Note: Do not use solvents (e.g. acetone) to clean the Pour-Thru cell. A dilute
acid solution can be used for cleaning. Rinse thoroughly with deionized water.
If windows are cloudy or soiled or bubbles form, add 50 mL of a detergent solution to the
cell and wait for a few minutes to allow it to take effect. Then purge the cell thoroughly with
distilled water. If necessary, the 1-inch Pour-Thru cell can be taken apart to be cleaned.
Wipe the windows of the cell with a soft cloth only—paper towels and other paper products
may scratch the glass.
Troubleshooting
Carefully inspect clear tubing for kinks or sharp bends which may restrict the flow of liquid
through the Pour-Thru cell.
Use of the Pour-Thru cell
Since there is a difference in the light path between the 1-inch square cells and the 1-inch
Pour-Thru cell it is necessary to adjust the calibration slightly when using the 1-inch
Pour-Thru cell. This is done by applying a dilution factor of 1.1 or performing a standard
adjustment. The appropriately revised method can be stored as a user program. If the use
of a Pour-Thru cell is prescribed in a Hach method, no adjustment is needed.
Be sure to use the Pour-Thru cell that corresponds with the cell path length called for in
the method. The 1-cm and 5-cm Pour-Thru cells should only be used with Hach methods
that call for those specific cells or with user programs.
Be sure to use the appropriate sample volume and reagents required for each particular
cell. A 1-inch Pour-Thru cell can be used with a Hach method if the prescribed sample
volume is 25 mL. If the prescribed sample volume is different than 25 mL, adjust the
amount of sample and reagents as necessary to achieve the stated minimum rinsing
volume (refer to Specifications on page 1).
Although the Pour-Thru cell can be used for the Hach methods listed in Table 1, the cell
must be thoroughly purged with distilled water between individual samples.
The Pour-Thru cell can also be used to run Nitrogen, Ammonia, Nessler Method and TKN
chemistries. Clean the cell by pouring a few sodium thiosulfate pentahydrate crystals into
the cell. Rinse out the crystals with deionized water.
Important Note: The Pour-Thru cell cannot be used for the Hach methods listed in
Table 2.
Table 1 Pour-Thru cell methods that require purging
Aluminum, Aluminon Chloride Dioxide, LR Cobalt, PAN
Copper, Porphyrin Hardness, Calmagite Manganese, LR, PAN
Nickel, PAN Nitrate, MR Nitrate, HR
Table 2 Hach methods that cannot be used with the Pour-Thru cell
Aluminum ECR Arsenic Barium Boron, Carmine
Cyanuric Acid Flouride Formaldehyde Lead, LeadTrak
Mercury Nickel, Heptoxime Nitrite, HR PCB
Phenols Potassium Selenium Silver
Suspended Solids Sulfate TPH Volatile Acids
Zinc Surfactants, Anionic (Detergents)
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