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PRODUCTS / PURE & CARRIER GASES / GAS CHROMATOGRAPHY

Progas Grade Gases For Gas Chromatography And Other Applications

These gases are mostly one component gases and are of extremely high purity in the order of 99.9993% or more. Generally at this level of purity, the amount of each impurity is present in PPM or PPB levels. The total amount of impurity in ppm or ppb is mentioned.

Proton recommends Progas grade gases for optimal functioning of your GC and other instruments. The use of Progas grade gases surpasses the need for expensive and unpredictable in line purifiers, which often demonstrate break through of contaminants. Proton recommends Progas grade gases for FID, FOD, and TCD, HID, DID etc.

Below is the list of Progas grade gases that are available ex stock from Taloja works.

Carrier and Support Gas Impurity Effects on Gas Chromatographic Detectors.

Discharge Ionization Detector (DID)

Requires 99.999% (N5.0) purity helium as trace impurities increase background signal and baseline noise reducing usable discharge current resulting an impaired sensitivity.

Electron Capture Detector (ECD)

Halogen containing species have significant electron capture cross section, which impairs sensitivity and raises the background signal. Oxygen contamination modifies detector response and increase noise. Hydrocarbons can quench signal response and generate ghost peaks.

Flame Ionization Detector (FID)

Hydrocarbon contamination must be at a minimum in the carrier gas to prevent ghost peak, baseline drift and to reduce background noise. Hydrocarbon in air and fuel gas caused increased noise and background current.

Flame Photometric Detector (FPD)

Hydrocarbon, Carbon Dioxide and Sulphur component causes signal quenching and increased background noise.

Hall Electrolytic Conductivity Detector (Hecd Or ELCD)

Impurities can become concentrated or purge and trap sampling devices and inject into Gas chromatograph.

Helium Ionization Detector (HID)

Trace impurities will cause baseline noise, signal polarity shafts reduced sensitivity and instability.

Photo Ionization Detector (PID)

Hydrocarbon impurites increase baseline noise and oxygen reduces sensitivity.

Thermal Conductivity Detector (TCD)

Oxygen and moisture impurity causes filament oxidation resulting in reduced sensitivity and ghost peak.

Detector Carrier &
support Gas
100 ppt to
100 ppb
Minimum Detectable Level
  100 ppb to 100 ppm 100 ppm to 1% 1% to 50%
DID Helium Purge
Helium
N 6.0
N 4.6
N 6.0
N 4.6
N/A
N/A
N/A
N/A
FID
Helium
Nitrogen
Hydrogen
Air
Fuel
(40%H2/He)
N/A
N/A
N/A
N/A
N/A
N 5.5
N 5.5
N 5.5
Zero ( HC < 0.1)
N 5.0
N 5.0
N 5.0
Zero ( HC < 0.1)
N 4.6
N 4.6
N 4.6
Zeor ( HC < 0.1)
ECD Helium
Nitrogen
Methane/Ar
N 6.0
N 5.5
5% Ch4/Ar
N 6.0
N 5.5
5% Ch4/Ar
N/A
N/A
N/A
N/A
N/A
N/A
FPD Helium
Nitrogen
Hydrogen
Air
N 6.0
N 6.0
N 6.0
Zero
N 5.5
N 5.5
N 5.5
Zero
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
HALL ELCD Helium
Hydrogen
Air
N 6.0
N 6.0
Zero
N 5.5
N 5.5
Zero
N/A
N/A
N/A
N/A
N/A
N/A
HID Helium
Purge Helium
N 6.0
N 4.6
N 6.0
N 6.0
N/A
N/A
N/A
N/A
GC/MS
Spectrometer
Helium
Nitrogen
N 6.0
N 6.0
N 6.0
N 6.0
N/A
N/A
N/A
N/A
Photo Ionization Argon
Nitrogen
Helium
N 6.0
N 6.0
N 6.0
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N/A
N/A
N/A
TCD Argon
Helium
Hydrogen
Nitrogen
N/A
N/A
N/A
N/A
N/A
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
Ultrasonic Helium
Nitrogen
Oxygen
N/A
N/A
N/A
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
N 5.5
High Frequency Helium
Argon
N 6.0
N 6.0
N 6.0
N 6.0
N 5.5
N 5.5
N/A
N/A

Purity Code
  • The first digit in code represents the number 9 s.
  • The second digit in the code represent the last digit.

Example
  • 4.8 ------------ 99.998%
  • 6.0 ------------ 99.9999%

Bulk Gases

Pure & Carrier Gases

Gas Chromatography
Application
Carrier Gases
Rare Gases
Speciality Gases
Gas Mixtures / Calibration
Gas Mixtures
Gas Handling Equipments

Packaging Option