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| Kimberly Smith/AJC |
| Vials containing pure samples that can be used as benchmarks line a shelf at MVA. These samples can be used for comparison to samples of unknown materials. |
![]() |
| Kimberly Smith/AJC |
| Vials containing pure samples that can be used as benchmarks line a shelf at MVA. These samples can be used for comparison to samples of unknown materials. |