Cleaning The Pour-Thru Cell; Using The General-Purpose Timer - Hach DR/2400 Manual

General Instrument Operation

2.11.1 Cleaning the Pour-Thru Cell

2.12 Using the General-Purpose Timer

General Instrument Operation
Page 30
The Pour-Thru cell can be used with Hach chemistries provided a 25 mL sample
is analyzed. Exceptions are noted in Table 1.
Table 1 Hach chemistries that cannot be used with the Pour-Thru cell
Aluminum ECR Arsenic
Cyanuric Acid Fluoride
Mercury Nickel, Heptoxime
Phenols Potassium
Suspended Solids Sulfate
Zinc Surfactants, Anionic (Detergents)
The Pour-Thru cell can be used with the following Hach chemistries, but special
care must be taken to rinse the cell with deionized water between samples.
Table 2 Hach chemistries that need extra rinsing with the Pour-Thru cell
Aluminum, Aluminon
Copper, Porphyrin
Nickel, PAN
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.
Check the cell occasionally for an accumulation of film on the windows. If the
windows appear dirty or hazy, or if bubbles form in the cell, pour 50 mL of a
detergent solution into the cell. Let it soak for several minutes. Rinse thoroughly
with deionized water. Use a soft cloth to clean the sample cell windows. Paper
towels and other paper products may scratch the windows.
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.
In addition to pre-programmed timers, many programs have a
general purpose timer available. Touch the timer icon to access the
timer system.
Barium
Formaldehyde
Nitrite, HR
Selenium
TPH
Chlorine Dioxide, LR
Hardness, Calmagite
Nitrate, MR
Boron, Carmine
Lead, LeadTrak
PCB
Silver
Volatile Acids
Cobalt, PAN
Manganese, LR, PAN
Nitrate, HR
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