109 / 166
ISPAM GLUTEN IN OATS PROJECT
WORKING GROUP PRESENTATION
1
MEASUREMENT VARIATION
• Trace amounts of gluten can be present in a sample.
• The gluten in the sample is randomly distributed, but tends to
be found in microscopic “flecks.”
• This microscopic inhomogeneity can result in abnormally high
test variation due to sampling probabilities, especially at small
test portions.
• Efforts to significantly reduce sample non-homogeneity
through grinding have not been effective.
• Lack of sample homogeneity coupled with small test portions
leads to significant test variation.
2