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The Interlaboratory Study (ILS) Program was established by ASTM's Board of Directors
to help ensure that every one of ASTM's test methods is validated by a Precision Statement that quantifies
what a user of any given standards can expect to achieve in terms of repeatability (what one laboratory analyzing
the same sample multiple times would likely see as its range of acceptable results) and reproducibilty
(the difference that would be expected if the same sample were analyzed using the same standard in multiple laboratories).
Ultimately, having precision statements supported by data driven studies will enable users, producers, and consumers
to all have even greater confidence in the ASTM Test Methods that they reference.
Laboratories volunteer to participate in the ILS Program knowing that they will have a direct impact on the Test Method
being tested, and the way that it is utilized by their counterparts around the world. Participating labs are acknowledged
on the ILS webpage and in the resulting ASTM Research Report, and
while the specific data reported is randomized, labs can use their findings to assess their own performance as
compared to that of their peers.
ASTM's ILS Program provides overall administrative support to all registered studies.
Currently Registered Interlaboratory Studies:
Click on one of the following links to review a description of the proposed study and a list of participating laboratories.
ASTM D4735-96 Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
D7011 - Determination of Trace Thiophene in Refined Benzene by Gas Chromatography and Sulfur Selective Detection
Interlaboratory Studies Completed in the previous 12 months:
Click on one of the following links to review a description of the study proposal and a list of participating laboratories.
There were no ILS programs completed for this committee in the previous 12 months.
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