November 16, 2016, 715004521 Rev. C
Page 95
B.2 Solvent specifications
The following table identifies the recommended co-solvents to use with liquid CO
2
in the ACQUITY
UPC
2
system. You can use up to 55% co-solvent with liquid CO
2
. When needed, use up to 5% of
acceptable additives in the co-solvent.
Also listed are solvents that are not recommended for use in this system.
B.3 Wetted materials
Review the wetted materials of construction to determine chemical compatibility.
Table B–5: Co-solvent usage
Recommended Solvents
(up to 55%)
Acceptable additives (up
to 0.2%)
Solvents not recommended
Methanol Formic acid Toluene
Ethanol Trifluoroacetic acid Trichlorobenzene
Isopropyl alcohol Diethylamine Benzene
Acetonitrile Triethylamine Brominated solvents
Isopropylamine Butane
Ammonia Carbon disulfide
Chlorinated solvents
Chloroform
Diethyl ether
Table B–6: ccBSM
Diamond-like coating PEEK™
ETFE PEEK blend
FEP Perfluoroelastomer
Fluoropolymer Polyethylene
UH MWPE 316 stainless steel
MP35N Titanium alloy
Nitronic
®
60 Tygon
®
2275
Zirconium Ruby
Sapphire
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