What Does 20 PPM Look Like

Authored by:  Ryan Alvarez-Cohen
Published on:  July 11, 2015

The FDA defines gluten-free food as containing less than 20 parts per million (PPM) of gluten. Some people find that confusing because it indicates that a food can have gluten, yet still be labeled G-F.

In order to help understand this FDA standard, FTN thought it would be useful to help people visualize what 20 PPM looks like when applied to foods that are conducive to gluten trace ingredients or cross-contact.

So with the aid of a precision lab scale, we show gluten powder that is equivalent to 20 PPM for a personal pizza, an order of french fries, and a 2 liter beverage bottle. In each case, 20 PPM is represented by the white gluten powder on the brown cardboard, and the penny is shown for scale.

 Pizza, Personal Size, 6 to 7-inch, 250-275 Grams                                                                         275 grams x 20 / 1,000,000 = 0.0055 Grams (see white powder)












    French Fries, Small Order, 100-125 Grams                                                                                  125 grams x 20 / 1,000,000 = 0.0025 Grams (see white powder)












                          2 Liter bottle of Liquid

            2000 mL x 20 / 1,000,000 = .04 mL
                          (see white powder)


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