ASBC Laboratory Proficiency Program​

Participants subscribe to a series within Beer Analysis, Hops, Barley, and Malted Barley. Subscribers receive specially prepared samples according to the schedule specified for that subscription. Upon receiving the sample, analyses are conducted and results are submitted by the scheduled deadline through the subscriber portal. Complete confidentiality of results is guaranteed as each subscriber receives a unique ID that is updated on a yearly basis. Results are analyzed, and a report is issued containing the statistical analysis of the results submitted by all participating subscribers. Subscribers will also receive quantitative estimates of the accuracy of their submitted results. Fees vary depending upon the series, the frequency, and the subscriber's location.

Final LPP reports will be available within days of the deadline for reporting results. Series will require more than 6 data points or participants to generate Z-scores and kernel density graphs. The reports will identify the following:

• Series name, sample number and test material, and number of series participants.
• Participant reported data listed according to the subscriber unique ID.
• Assigned value (mean) and standard deviation for each constituent are reported after removal of data qualified as Grubbs' outliers.
• Z-scores (note: Z-scores are not calculated for data points classified as an outlier or for series having less than 6 participants.)
• Outliers as determined by the Grubbs' calculation (ISO 5725 Part 2) are noted on data entry reports with a G.
• Chart of Z-score plots the Z-scores according to subscriber unique ID. Z-scores greater than 2 standard deviations (S.D.) are indicated in yellow, greater than 3 S.D. are indicated in red.
• Kernel density plots show the raw data against the probability density. Raw data of greater than 2 S.D. are indicated by the yellow bar. Raw data greater than 3 S.D. values are indicated by the red bar.

Cancellation Policy

All cancellation requests must be submitted in writing. A cancellation request is made when a subscriber no longer wishes to receive samples or reports.

Cancellation requests must be made at least 45 days in advance of the "Portal Open Date" of the nearest round. Cancellation requests made within 45 days will be applicable to the following scheduled round.

Refunds will be granted only for pre-paid shipping fees and will be processed within 60 days of cancellation. No refunds will be granted for pre-paid series subscriptions. Extenuating circumstances will be evaluated on a case-by-case basis.

The ASBC Laboratory Proficiency Program provides subscribers an opportunity to evaluate accuracy, as well as instrument performance on a regular basis. By comparing internal laboratory data to results from other laboratories around the world, a critical assessment of the analytical data generated by subscribing laboratories can be made. Subscribers can also build confidence in the analytical data generated by their laboratory personnel. Participating laboratories rely on proficiency programs for a number of reasons, including:

• Comparison of subscriber results with those of other peer laboratories over time (results are anonymous)
• Confirming analytical proficiency of laboratory personnel within the same facility or across multiple sites
• Benchmarking of best practices
• Qualification of contract laboratories
• Evaluation of alternative analytical methodologies
• Enhancement of process control capabilities by providing an independent means to assure gauge-related contributions to data variability
• Ensure accuracy of labeling information

If measurements are made on beer or raw materials, the ASBC Laboratory Proficiency Program can help confirm the accuracy of those results for any sized operation!

Check out our other resources on Growing your Own Beer Quality Lab!