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WSI Analyser

Part Number SA9000-0

The Water Separation Instrument 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 WSI displays the measured water separation index. Results can range from 0.0 to 100.0. A high water separation index, such as 100.0, indicates the test specimen coalesces easily and is relatively free of surfactants.

The WSI is operated via a touchscreen user interface that takes you through the testing procedure. The instrument consists of a sonicator, temperature probe, filter cartridge, dye detector and dyed water, solvent and test specimen pumps.

The latest Product Quality Bulletin (No 121) 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).

WSI Analyser


Automated Water Separation Index (WSI)
Measures 0 to 100 WSI
220 ml 10 ml sample volume
Patented Ultra Sonic Mixer
API/EI 1581 5th edition filter material
Suitable for untrained operators
Fully automatic


ASTM D1655, ASTM D8073, IP 624, JIG Bullletin 21


Petroleum - Fuels & Oils


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