Proficiency Sample Schedule

NOTE: All dates are subject to change.

Enrollment Cutoff Date
To be enrolled in the sample, laboratories must have submitted an enrollment request and paid the invoice before the specified date. Any requests or payments received after this date will be placed on a future enrollment list, and a credit (if payment received), will be automatically applied to the account. Your laboratory will be enrolled in the sample after the final report for it has been released.

Ship Date
This is the estimated date the sample round will be shipped from our facility, though samples are often shipped earlier. Please note that datasheets and instructions for the sample will only be available starting on this date, even if the sample is shipped earlier than expected.

Non-Receipt Date
This is the date by which your laboratory should receive the sample. Please contact us at psp@aashtoresource.org if you have not received it by this date.

Closing Date
All testing data must be submitted and confirmed by the laboratory on or before this date. Any data submitted after this date will not be included in the analysis, and no ratings will be issued.  Data can not be changed after this date.