Requirements For Hydrogen As A Carrier Gas - Agilent Technologies ALS Handbuch

7820 MSD Site Preparation
Table 59
Carrier (max)
Carrier (min)
Table 60 Delivery pressures for detectors required at the GC/MS, in kPa (psig)
Detector type
FID
Hydrogen 240–690 (35–100)
Air 380–690 (55–100)
Makeup 380–690 (55–100)
Reference

Requirements for hydrogen as a carrier gas

Hydrogen can be supplied from a generator or from a cylinder.
Agilent recommends use of a high-quality hydrogen gas generator. A
high-quality generator can consistently produce purity > 99.9999%, and the
generator can include built-in safety features such as limited storage, limited
flow rates, and auto-shutdown. Select a hydrogen generator that provides low
(good) specifications for water and oxygen content.
If using a hydrogen gas cylinder, Agilent recommends use of Gas Clean Filters
to purify the gas. Consider additional safety equipment as recommended by
your company safety personnel.
122
Delivery pressures for inlets required at the GC, in kPa (psig)
Inlet type
Split/Splitless
827 (120)
(20 psi) above pressure used in method
NPD
240–690 (35–100)
380–690 (55–100)
380–690 (55–100)
Conversions: 1 psi = 6.8947 kPa = 0.068947 Bar = 0.068 ATM
TCD uECD
380–690 (55–100) 380–690 (55–100)
380–690 (55–100)
GC, GC/MS, and ALS Site Preparation Guide
Purged packed
827 (120)
FPD
310–690 (45–100)
690–827 (100–120)
380–690 (55–100)