H2S Analyser with Vapour Phase Processor - SA4000-4

ASTM D7621
IP 570
ISO/PAS 23263
ISO 8217

The H2S Analyser with Vapour Phase Processor (VPP) is a compact bench-top instrument, 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.

Designed with an integrated VPP, components such as toluene, xylene, thiols (mercaptans) and alkyl sulphides are removed to ensure the accuracy of results.

An analytical balance can be connected to the H2S Analyser which reads the data from the balance and automatically calculates the sample mass, saving time and eliminating the risk of data entry errors.

Other enhanced functionality features include real-time graphical display of test progress, custom result reporting and automated gas calibration.

Statistical Quality Control (SQC) software allows analysis of results in accordance with ASTM D6299. Whilst participating in the Proficiency Testing Scheme (PT Scheme) ensures continued compliance to IP 570.

H2S Analyser with Vapour Phase Processor - SA4000-4


  • Measurement range from 0-250 mg/kg H2S
  • Built in Vapour Phase Processor
  • Non chemical method, no wet chemistry involved
  • Small lab bench footprint
  • Integral camera to aid sample input
  • Custom result reporting and LIMS output
  • Weighing balance connectivity and automation
  • Statistical Quality Control software

Additional Information

Ease of use:
The H2S features a simple user interface with touchscreen display. An integrated camera showing the test vessel aids sample input and ensures the correct amount of sample is used for accurate results.

Cost saving:
Due to the simplicity of test set up and no requirement for analytical preparation by an experienced chemist, low operator time is needed to run a test, helping to reduce labour costs.
The H2S Analyser requires only a small sample volume, helping to reduce cost and waste per test.
As the H2S uses a non-chemical method, no costly or hazardous chemicals are required.

Calibration and verification:
Calibration of the H2S Analyser can be performed in the field, eliminating the costs and time associated with sending the instrument to a service centre.

Service and maintenance:
The rugged design ensures minimal operational maintenance in needed.
Measurement range0-250 mg/kg H2S in the liquid phase (0-250 ppm H2S)
Viscosity range1-3000 mm2/s at 50C
Principle of measurementElectro-chemical sensor
Test duration15 minutes
Sample size1ml, 2ml, 5ml (depending on H2S concentration)
Diluent volume20ml
Results formatNumerical and graphical display
Memory500,000 result memory. Print via external printer, export to LIMS, USB or QR code
ConnectivityRJ45 Ethernet, RS232 Serial or USB
Voltage100/240 V, 50/60 Hz, auto-sensing universal power supply
Size (HxWxD)52 cm x 29 cm x 57 cm
Weight15 kg
CCCN CodeTariff 90268020


ASTM D7621
IP 570
ISO/PAS 23263
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
ISO/PAS 23263 Petroleum products - Fuels (class F) - Considerations for fuel suppliers and users regarding marine fuel quality in view of the implementation of maximum 0,50% sulfur in 2020