Proficiency Test on Transformer Oil (Used) 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.

Download the instructions for iis17L10 here: The letter of instructions and the report form here.

Download the instuctions for iis17L10F here: The letter of instructions and the report form here.

Summary of this proficiency test:

On 1 November 2017 the proficiency test on Transformer Oil (Used) started with 75 participants from 35 different countries. 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 sample can be analyzed on: Acidity, Breakdown Voltage, Density at 20°C, Di-electric dissipation Factor, Specific Resistance, Flash Point, Interfacial surface tension, Kinematic Viscosity at 40°C, Water and Total Furanic Compounds.

The deadline for reporting results is set on 8 December 2017. 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