Interlaboratory Study (ILS) Process

    1. Work Item - register a work item (if you have not done so already).
    2. Registration - register the ILS through the MyASTM area of the website.
    3. Conference Call - The Technical Contact (TC) will be contacted by ASTM to set up a conference call to discuss the ILS. During this call the TC should be prepared to discuss the following information: test specimens, lab supplies, potential suppliers, a distributor, a potential list of labs, and what data should be collected as part of the study.
    4. Samples - if assistance is needed with finding and/or ordering materials to be tested, ASTM can provide support.
    5. Sample Funding - ASTM has funds available to assist with purchasing samples, sample preparation and shipping. After a proposal of costs is developed, ASTM will work with the committee to determine how much assistance can be provided.
    6. Lab Solicitation - if there are not enough labs to do the testing, ASTM can send out a solicitation to the committee looking for volunteers.
    7. Lab Instructions - the study instructions should be developed and finalized before samples are distributed. Please send them to ASTM for review.
    8. Data Report Forms - ASTM will collect the study data using an online data report form or an excel data report form (depending on the amount/complexity of the data). The data report form will be sent to the technical contact for review before the labs receive it.
    9. Sample Distribution -once the study materials have been purchased, it may be necessary to send them to a distributor for final prep and packaging (may be the same as the supplier).The distributor will then ship the samples. ASTM will send the data report forms and the study instructions to the labs.
    10. Data Submission - ASTM will track data submitted by the lab participants.
    11. Statistical Summary - once all of the data has been received from the labs, ASTM will then compute the repeatability and reproducibility using ASTM Statistical Software. A draft precision and bias statement will be written and sent to the TC for review.
    12. Research Report (RR) - to generate the RR, ASTM will utilize information collected during the ILS, including information in the online registration, study instructions, data analysis and the precision and bias statement. The draft research report will be sent to the TC for review.
    13. Precision and Bias Statement - the precision and bias statement (along with any other revisions to the standard) should be placed on the next ballot.
    14. Approval - after the ballot is approved and the research report is complete, ASTM will assign a RR#, and send out copies of the RR to the TC and the participating labs.