A-A-20175 Chewing GumThis CID covers chewing gum, packed in commercially acceptable containers, suitable for use by Federal, State, local governments, and other interested parties; and as a component of operational rations.

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A-A-20175E

Table I. Water-insoluble base2

Type I	NLT 13.0 percent3
Type II	NLT 14.0 percent
Type III	NLT 19.0 percent
Type IV	NLT 18.0 percent
Type V and VI4	NLT 13.0 percent
Type VII	NLT 11.0 percent

7.1.1 Caffeine content. The caffeine content of Style (2) chewing gum shall be not less than 80 mg or not greater than 120 mg per manufacturers suggested serving.

7.1.2 Xylitol content. The xylitol content of two tablets of Class 3 and Class 4 chewing gum shall be not less than 1.7 g (0.06 oz) and not greater than 2.2 g (0.08 oz).

7.2 Product verification. When verification of the caffeine content of Style (2) gum is specified in the solicitation, contract, or purchase order, a manufacturer's Certificate of Analysis shall be submitted. When verification of the xylitol content is specified in the solicitation, contract, or purchase order, a manufacturer's Certificate of Analysis shall be submitted. When verification of water insoluble base is specified in the solicitation, contract, or purchase order, the following procedures will be followed.

7.2.1 Sampling procedures. Five packages, sticks, chunks, or servings shall be selected at random from the lot.

7.2.2 Preparation of sample. Weigh the individual samples (a minimum of 2 tablets, 1 stick, 1 slab, 1 chunk, or 1 piece). In the case of miniature tablets, a suitable single serving shall be approximated and weighed. Chew each sample vigorously for 10 minutes. Spread the chewed gum as evenly and thinly as possible on a previously dried and tared glass or metal plate or disposable aluminum weighing dish approximately 2 inches square.

7.2.3 Examination for water-insoluble base. Dry the sample at 100°C (212°F) in a vacuum oven at a pressure not more than 100 mm of mercury for at least 2 hours or in a gravity convection oven for at least 4 but not more than 5 hours. Cool in a desiccator, weigh, and calculate the percentage of water-insoluble base for each sample.

2 Percent by weight

3 NLT = Not less than

4 Includes the liquid center