The American Society for Enology and Viticulture (ASEV) offers a
Systems for Winery Laboratories CD which highlights the
principles of winery laboratory quality management. It also has
an agreement with Collaborative Testing Services, Inc. (CTS) to
administer an inter-laboratory testing program for ASEV members
and other members of the wine industry in the U.S. ASEV also has
Proficiency (ad hoc) Committee.
The inter-laboratory program, segmented into testing three
rounds, involves the sending of two 750 mL bottles of wine to
each participating laboratory. Each lab will test according to
its normal laboratory procedures, i.e., the testing of samples
for the proficiency program shall flow through the routine work
schedule of the winery lab, and the lab shall not attempt to
provide any special care or treatment for these samples.
Laboratory results will be analyzed using a comparative approach.
Each laboratory will receive a printed, individual report within
3 weeks of the conclusion of each round and a summary report
listing the data from all participating laboratories (on an
anonymous basis) will be posted on the CTS Web Site, as listed in
the link below. Organizations with a commitment to monitoring
testing across multiple laboratories, may enroll for a Quality
Manager Report that will compare the data from different sites.
Each individual laboratory will be asked to run and report on the
following analyses: Alcohol by Volume, Total Sulfur Dioxide, Free
Sulfur Dioxide, Titratable Acidity, Volatile Acidity, Specific
Gravity, pH, Reducing Sugar, Malic Acid, Glucose + Fructose,
Copper Content, A420 and A520. Selected research properties or
analyses may be added periodically. Participants have the option
to participate in all of the individual property tests and may
submit data for any of the analyses tested. The participants can
choose any method that they deem appropriate for the analyses,
but need to specify methodology used when submitting their
results to CTS.
Participation Schedule and Fees
Participation is based on 3 scheduled rounds each year. The
sample distribution months (March, June, and October) are chosen
to minimize impact on the crush season. The current fee for
participation for each 3-round schedule in a given year is US
$702.00 (twelve or more analyses / three times per year).
For more information on the CTS Testing Program,
Collaborative Testing Services, Inc.
P.O. Box 650820
Sterling, VA 20165-0820
Fax: 571-434-1937 firstname.lastname@example.org
All testing, reports, maintenance of anonymity and general
activities necessary for conducting this testing program are
conducted solely by CTS. ASEV plays no role in the actual testing
program and assumes no direct or inferred liability for any
samples, testing or outcome of this lab testing service.
Provides information on the quality management of analytical
laboratories and an interlaboratory proficiency testing scheme.
Developed by the analytical quality committee of the ASEV
Technical Projects Committee (TPC). Available in PC and Mac
American Society for Enology and Viticulture Web Link &
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