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Solvent and Gas Purity Requirements ____________________________________________
xvi
_____________________ LCQ Deca XP Plus Hardware Manual ________________
Solvent and Gas Purity Requirements
Use the highest purity solvents available. The LCQ Deca XP Plus MS
detector is extremely sensitive to solvent impurities. Some solvent impurities
are transparent to UV/Visible detectors, but are easily detected by the
LCQ Deca XP Plus MS detector. Liquid chromatography grade is the
minimum acceptable purity. Higher grade solvents are preferred. Distilled
water is recommended. Deionized water contains chemicals and is not
recommended.
The following is a list of international sources that can supply high quality
solvents:
The LCQ Deca XP Plus MS detector uses helium as a damping gas. The
helium should be ultra-high purity (99.999%) with less than 1.0 ppm each of
water, oxygen, and total hydrocarbons. The required gas pressure is
40 psi ±10% (36 to 44 psi). Thermo Finnigan has found that particulate filters
are often contaminated and are therefore not recommended.
The LCQ Deca XP Plus MS detector uses nitrogen as a sheath gas and
auxiliary gas. The nitrogen should be high purity (99%). The required gas
pressure is 100 psi ± 20% (80 to 120 psi).
Solvent Source
Telephone Number
Mallinckrodt/Baker, Inc.
Tel: (800) 582-2537
Fax: (908) 859-9370
Burdick & Jackson, Inc.
Tel: (800) 368-0050
Fax: (616) 725-6216
E. M. Science, Inc.
Tel: (800) 222-0342
Fax: (800) 336-4422
Содержание LCQ Deca XP Plus
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