Knauer Azura V 2.1S, User Manual

Page: 11 / 51

Intended Use 11
AZURA V 2.1S User Manual, V6860, Version 2.2
Eluents
Chemical resistance of a valve depends on the stator material and the rotor seal.
Even small quantities of other substances, such as additives, modifiers, or salts
can influence the durability of the materials.
Note: The list of selected solvents was compiled based on research in the perti-
nent literature and is only a recommendation. If there is any doubt, contact the
Technical Support.
Legend
1
biconical seal
2
Dynaseal
3
screw fitting with ferrule
Fig. 6 seals
Material
pH range Suitable Eluents Less Suitable Elu-
ents Unsuitable Elu-
ents
POM-H-TF
pH 3-14

ethanol

ethylacetate

hexane

heptane

isopropanol

methanol

acetone

acetonitrile

dichlorometh-
ane
PPS HPV

acetone

dichlorometh-
ane

ethanol

ethylacetate

hexane

heptane

isopropanol

methanol

1 M NaOH

50 mM
KH
2
PO
4

acetonitrile

strong bases

oxydizing acids
2
1
3