| Standard Specification for Electrodeposited Coatings of Silver for Engineering Uses | ASTM B-700 | |
| Purity | ||
| Type 1 | 99.9% minimum | |
| Type 2 | 99.0% minimum | |
| Type 3 | 98.0% minimum | |
| Grade A | Matte | |
| Grade B | Bright. Obtained by use of brighteners in plating bath | |
| Grade C | Bright. Obtained by mechanical or chemical polishing | |
| Grade D | Semibright. Obtained by use of addition agents in plating bath | |
| Class N | No supplemental tarnish resistant treatment | |
| Class S | With supplemetal tarnish resistant treatment | |