Click here to go back to the previous page


2018 Proficiency Test (PT) on Gasoline 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 iis18B04EN here: the letter of instructions and the report form here.

Download the instuctions for iis18B04DVPE here: letter of instructions for DVPE and the report form here.

Download the instuctions for iis18B04RON here: letter of instructions for RON/MON and the report form here.


Summary of this proficiency test:


On 26 September 2018 the proficiency test on Gasoline started with 139 participants from 51 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: API gravity, Appearance, Aromatics, Benzene, Copper strip 3hrs at 50ºC, Density at 15ºC, Distillation, Doctor test, Existent gum (washed), Pb, Mn, Olefins, Oxidation Stability, Oxygenates, Oxygen Content, Sulphur, Air saturated vapour pressure, DVPE and RON/MON


The deadline for reporting results is set on 2 November 2018. 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





©1996-2023 Institute for Interlaboratory Studies