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Personal Identity Verification
|PC||PC product, most available for purchase, some are free|
|Online||Free online system|
|DG||Inclusion in the NIST Data Gateway - a portal providing access to many NIST scientific and technical databases. It is searchable by keyword, property, or substance name.|
|*||Product contains data that have undergone rigorous critical evaluation by experienced researchers who recommend best values.|
|Online Subscription||Product is a yearly subscription web product.|