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MORTAR
AND PESTLE GRINDING PROCEDURE
(NON-TRACE METAL QUALITY) AND ALIQUOT MAKING |
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Materials Required:
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| Rinse the agate mortar and pestle with warm tap water and scrub it out with the NYLON brush using Liqui-Nox and water. |  |
| Rinse with copious amounts of Milli-Q water. |  |
| Rinse with Methanol. |  |
| Empty the entire contents
of dry sample from the specimen container into the clean and dry mortar.
If sediment has adhered to the walls of the specimen container, scrape this off using a clean plastic spoon. |
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| Grind until the material has no grit (determine by rubbing a small amount between your fingers, but then discard the grit-tested material!). |  |
| Empty ground sample onto a piece of weighing paper. |  |
| Use weighing paper to empty the sample into a labeled 10 dram polyethylene snap cap vial. |  |
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