TABLE 1.

NIST SRMs for foods and dietary supplements with values for iodine¹

SRM	Description	Iodine, mg/kg	Uncertainty,2 mg/kg	Unit of issue	Date of issue
3280	Multi-element multivitamin tablets	132.7	6.6	5 × 30 whole tablets	January 2009
1548a	Typical diet	0.759	0.103	2 × 6.5 g	February 1998
3233	Breakfast cereal	0.043	—	1 × 60 g	September 2012
1845a	Whole egg powder	3.03	0.10	5 × 10 g	September 2014
1549a	Whole milk powder	3.34	0.30	10 g	August 2013
1849a	Infant or adult nutritional formula	1.29	0.11	10 × 10 g	December 2011
2383a	Baby food composite	0.0737	0.0083	4 × 70 g	October 2012
1953/1954	Human milk4	—	—	5 × 5 mL, frozen	Iodine value in preparation

¹NIST, National Institute of Standards and Technology; SRM, Standard Reference Material.

²Expanded uncertainty about the mean. Refer to SRM Certificate of Analysis for details.

³SRM Certificate of Analysis, information value.

⁴Developed for measuring contaminants.