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Water Separation Instrument- WSI Analyser- SA9000-0

Petroleum and Fuel Analysis

Fully automatic and compact bench top / portable instrument

The Water Separation Instrument (WSI) is a fully automatic and compact bench top / portable instrument. The instrument measures how effectively a fuel sample releases entrained and emulsified water when pumped through a water coalescing filter. The measured water separation index clearly displays at the end of the test.

The WSI is operated via a simple user interface with touch screen display. The fully automated test means minimal operator knowledge is required; little to no training is needed to use the instrument. The automatic test sequence and consistent sample handling also ensures test repeatability and reproducibility.

System Description

Due to the simplicity of set up and automation, low operator time is required, which reduces labour costs. The WSI has inexpensive consumables and just one low cost filter per test; this allows additional savings and reduced waste per test. Additionally, easy on site calibration eliminates the time and costs associated with sending an instrument to a service centre.

The WSI’s internal data storage allows access to past results which can be exported by USB connection to PC for further analysis.

The latest Product Quality Bulletin (No 142) from JIG revises the Protocol for Water Separation Testing Downstream of Point of Manufacture and now advises testing can be done using ASTM D8073 (IP 624).

  • ● Fully automated test procedure

  • ● Suitable for untrained operators

  • ● Automated sample mixing for increased accuracy

  • ● Rapid test, no warm up time

  • ● Internal data storage and USB output

  • ● Substantial consumable cost and waste saving

  • ● Field calibration, no down time

Product Specialist

Mikael Alfredsson Kovalent

Mikael Alfredsson

"Our expert in Digestion, Extraction, Syntesis and Evaporation with more than 20 years experience in the field of sales and service. Contact me for if you have questions or need a quotation"

Additional Information

Water Separation Test

Before each test the Water Separation Instrument flushes the test specimen, primes the instrument and primes the filter. When the test starts the unit pumps dyed water into the test specimen and emulsifies the solution with the sonicator. After a specific time the emulsion is pumped through a particulate filter, the dye detector and into the waste container to provide a reference value. Once a reference value is acquired, the emulsion is diverted through a filter cartridge to remove the dyed water before it passes through the detector again and a new set of readings are taken. The water separation index is calculated from the reference value and subsequent readings. Results display on the screen.

Test results are stored on the WSI or you can save the results onto a computer.

WSI Filter cartridges use API/EI 1581 5th edition filter material which is less sensitive to weak surfactants and is less affected by SDA, eliminating uncertainty over static dissipater additives, but is responsive to the presence of ester based additives.


  • ● Aviation

  • ● Petroleum - Fuels and Oils


  • ● ASTM D1655

  • ● ASTM D8073

  • ● IP 624

  • ● ATA 103

  • ● CAN/CGSB-3.23-2020

  • ● JIG BULLETIN 142