H2S Analyser - SA4000-3

ASTM D7621
IP 570
ISO 8217

The H2S Analyser and Vapour Phase Processor (SA4015-0) are compact bench-top instruments, used to measure the total hydrogen sulphide (H2S) content of fuel oils, such as marine residual fuels, distillates and petroleum blend stocks. The H2S Analyser can measure H2S concentrations from 0 to 250 mg/kg (ppm) in the liquid phase.

H2S is efficiently purged from the test sample by a combination of heat and agitation, and is measured by a proprietary advanced gas specific detector. The instrument offers a cost effective solution for H2S measurement – no costly or hazardous chemicals are required and there is no need for analytical preparation by an experienced chemist.

H2S Analyser - SA4000-3


  • Measurement range from 0-250 mg/kg H2S (0-250 ppm H2S) in the liquid phase
  • Vapour Phase Processor proven to eliminate effects of chemical interference
  • A non chemical method, no wet chemistry involved
  • Small lab bench footprint, fully portable operation
  • Suitable for monitoring residual marine fuel blends, Crude Oil, refinery feedstock components, cargoes & products in the distribution system
  • Critical Measurement method for Product Safety and Release

Additional Information

The Vapour Phase Processor (VPP)
The Vapour Phase Processor (VPP) is used with the H2S Analyser and removes components that may affect the accuracy of the results, such as toluene, xylene, thiols (mercaptans) and alkyl sulphides.

H2S Analysis of Crude Oil
The H2S Analyser combined with the VPP offers a fast and robust means of determining H2S levels to ensure effective evaluation and treatment of crude oil. The instrument provides a cost effective alternative to traditional methods which typically are unable to identify entrained H2S especially at low gas levels.

H2S Global Proficiency Testing Scheme
The Seta H2S PTS scheme provides global inter-laboratory comparison of test results and performance. Participation acts as a quality assurance programme enabling users to continually monitor and validate instrument performance and results in accordance with ISO/IEC 17025.
Measurement range0-250 mg/kg H2S in the liquid phase (0-250 ppm H2S)
H2S Analyser test temperature60 °C ±1 °C
Viscosity RangeUp to 3000 mm2/s
Principle of measurementElectro-chemical sensor
Test duration15 minute
Sample size1 ml, 2 ml, 5 ml (depending on H2S concentration)
Diluent volume20 ml
Voltage12 Vdc, supplied with universal A/C transformer
Power60 W max
Computer interfaceRS232
Size (HxWxD)220 x 290 x 380 mm
Weight8 kg
CCCN CodeTariff 90268020


ASTM D7621
IP 570
ISO 8217
IP 570 Determination of hydrogen sulfide in fuel oils - Rapid liquid phase extraction method
ASTM D7621 Determination of Hydrogen Sulfide in fuel oil - rapid liquid phase extraction method
ISO 8217 Fuel Standard for marine distillate fuels and for marine residual fuels

Spares and accessories for H2S Analyser - SA4000-3