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2023 Proficiency Test (PT) on Jet Fuel A1 started


The letter of instructions can be downloaded here as a pdf document. To download a document, please click the right mouse button and choose the "save as" option.


Please download the instructions for the PT iis23J01 here: the letter of instructions and the report form here

Download the instuctions for iis23J01PS here: letter of instructions for PS and the report form here


Summary of this proficiency test:


On 22 February 2023 the proficiency test on Jet Fuel A1 started with 78 participants from 37 different countries. On that date, the samples were dispatched to the laboratories. Enclosed to the sample is the material safety data sheet (MSDS).

Please confirm sample receipt as soon as you have received and checked the contents of the sample package via Please enter the date of receipt and press the "save date" button.


The samples can be analyzed on: Appearance, Total acidity, Aromatics, Color Saybolt, Copper Corrosion, Density at 15°C, Distillation, Existent gum, Flashpoint, Freezing Point, Viscosity at -20°C, Mercaptan Sulfur, MSEP, Naphthalenes, Smoke Point, Specific Energy, Sulfur and Particle Size.   


The deadline for reporting results is set on 31 March 2023. A laboratory that reports test results after the deadline will definitely not get direct feedback in case any of its results are suspect! So be in good time to get the most out of this proficiency test.

The test results should be reported via our internet based results reporting platform A login and a password can be requested via email to





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