Specifications

GC, GC/MS, and ALS Site Preparation Guide 3
Contents
1 7890 Series GC Site Preparation
Customer Responsibilities 8
Installation Kits 9
Hydrogen Carrier Gas 12
Dimensions and Weight 13
Power Consumption 20
USA fast heating oven, 240 V 23
Canadian installation 23
Common instrument power cord plugs 23
Heat Dissipation 26
Exhaust Venting 27
Environmental Conditions 29
Gas and Reagent Selection 31
Gas and Reagent Purity 34
Gas Supplies 35
General requirements 35
Requirements for hydrogen as a carrier gas 37
GC/MS Gas and Reagent Requirements 38
Gas Plumbing 43
Supply tubing for most carrier and detector gases 45
Supply tubing for hydrogen gas 45
Two-stage pressure regulators 46
Pressure regulator-gas supply tubing connections 47
Filters and traps 47
Filter types 48
Cryogenic Cooling Requirements 52
Using carbon dioxide 52
Using liquid nitrogen 54
Using compressed air 55