3.5
Chemical resistance
Table 3.3 lists the chemical resistance of AxiChrom 50, 70 and 100 to various chemicals.
The concentrations listed should not be exceeded during an operating cycle.
In general, avoid using the following chemicals in AxiChrom columns:
•
Extreme oxidizers
•
Fluorine and halogenated compounds
•
Chlorinated solvents (such as methylene chloride)
•
Esters
•
Aromatic hydrocarbons (such as toluene)
•
Alcohols (e.g. ethanol) above 20% (v/v)
•
Chloride solutions in combination with pH below 4. Always wash the column with at
least two column volumes of pH-neutral solution (water) between the use of salt and
low pH liquid
This information has been collected from several published sources, not from
individual tests on column components. It should be used only as a guide. The
effects of a chemical will generally be more severe at higher temperatures.
Note also that the combined effects of agents have not been taken into account
in this table.
Note:
NOTICE
Low pH solutions containing chlorides can cause corrosion in
stainless steel. Rinse thoroughly with clean water after each use
with such solutions. Inspect the column regularly for signs of cor-
rosive attacks, which will cause column damage if untreated.
26
AxiChrom 50, 70 and 100 columns Operating instructions 28-9331-08 AG
3 Specifications and characteristics
3.5 Chemical resistance
