F-DBS - Application Guide

Application guide
Instruments	Gas used	Purity	Flowrate used	Generator model
Gas Chromatographie
GC-FID	Hydrogen	Hydrogen high purity	30 to 50 cc/mn	Hydrogen
	Zero Air for FID	Without hydrocarbon	300 to 500 cc/mn	Zero Air
	Hydrogen for carrier gas	Hydrogen high purity	10 cc/mn	Hydrogen
	Nitrogen for carrier gas	Nitrogen high purity ; N₂ Zero	20 to 50 cc/mn	Nitrogen NG model
	Nitrogen for make up gas	Nitrogen high purity ; N₂ Zero	30 to 50 cc/mn	Nitrogen NG model
GC-FPD	Hydrogen	Hydrogen high purity	60 to 90 cc/mn	Hydrogen
GC-FPD	Zero Air for FID	Without hydrocarbon	90 to 120 cc/mn	Zero Air
GC-NPD	Hydrogen for carrier gas	Hydrogen high purity	50 cc/mn	Hydrogen
GC-NPD	Nitrogen for make up gas	Nitrogen high purity ; N₂Zero	30 to 50 cc/mn	Nitrogen NG model
GC-ECD	Nitrogen for carrier gas	Nitrogen high purity ; N₂Zero	30 cc/mn	Nitrogen + Zero Air
GC-ECD	Nitrogen for make up gas	Nitrogen high purity ; N₂Zero	60 cc/mn	Nitrogen + Zero Air
GC-TCD	Hydrogen for carrier gas	Hydrogen high purity	100 cc/mn	Hydrogen
GC-ATD	Dry Air	Dry Air	< 2 L/mn	Dry Air
GC-AED	Nitrogen for carrier gas	Nitrogen high purity ; N₂Zero	< 1 L/mn	Nitrogen + Zero Air
GC-ELCD	Hydrogen into reacting gas	Hydrogen high purity	70 to 200 cc/mn	Hydrogen
LC / MS
APCI, ESI Applied Biosystem	Air and Nitrogen for nebulisation	Nitrogen / Dry Air	Until 20 L/mn for Air and 5 L/mn for Nitrogen	Nitrogen NMG and Dry air
LCMS / MS, TOF	Nitrogen for curtain gas	99,5 %	5 to 35 L/mn	Nitrogen ZEFIRO
Spectroscopy
FT-IR	Purge gas for sample compartment, optics, air bearing and microscope	Dry Air without CO₂	15 to 85 L/mn	Dry Air without CO₂
RMN	Air for lifting spinning and ejecting	Dry Air	300 L/mn	Dry Air
ICP	Nitrogen or Zero Nitrogen for purge gas	> 99,995 %	1 to 9 L/mn	Nitrogen NG Model
AA	Air for oxidant gas	Dry Air	28 to 200 L/mn	Dry Air
Products for Analyzers
COT	Dry Air or Nitrogen for carrier gas or combustion gas	Dry Air without CO₂, without hydrocarbon	100 to 500 cc/mn	Zero Air + Dryer without CO₂
COT	Dry Air or Nitrogen for carrier gas or combustion gas	Nitrogen high purity	50 to 700 cc/mn	Nitrogen NG model
Analyseur CO₂	Calibration Air	Dry Air without CO₂, without hydrocarbon	550 to 1000 cc/mn	Ultra Zero Air
DSC	Air for air shield	Dry Air	100 cc/mn	Dry Air
TGA	Nitrogen or Dry Air as furnace gas	Nitrogen high purity	100 cc/mn	Dry Air or Nitrogen NG model
Other lab applications
Sample prep	Nitrogen for solvent evaporation	95 % à 99 %	130 L/mn	Nitrogen NG model
	Air for pneumatic control	Dry Air	28 L/mn	Dry Air
	Nitrogen for auto-sampler	Nitrogen high purity, Nitrogen Zero	550 cc/mn	Nitrogen NG model
Circular Dichroïsm	Nitrogen	98 %	2 to 8 L/mn	Nitrogen N₂
ELSD Detector	Air for nebulisation	Dry Air or Nitrogen	2 to 6 L/mn	Dry Air, Nitrogen ELSD model
Particle sizing by laser diffraction	Clean and dry air for nebulizing gas	Dry Air	-	Dry Air

Air quality of compressed air FOR NITROGEN generators for LCMS, and zero air :

ISO 8573.1 CLASS 1.2.1

The new international standard for compressed air quality introduces a simple classification system for the 3 main contaminants present in any compressed air system : dirt, water and oil.

Quality class	Dirt Particules size in micron	Water Pressure dewpoint °C at 7 bar	Oil Including vapor mg/m³
1	0,1	-70°C	0,01
2	5	-40°C	0,1
3	10	-20°C	1
4	40	3°C	5
5	-	7°C	25
6	-	10°C	-

Note :

If the LCMS nitrogen generator is connected to a non-lubrificated compressor, the fridge dryer is efficient.

If the compressor is lubrified, it is recommended to use an adsorption dryer.