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BALL
MILL GRINDING PROCEDURE
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Materials Required:
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Remove grinding vessel from the drying oven. *Do not leave the plastic spoon in the oven for extended periods of time because it will warp. |
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Assemble the grinding vessel
in this order: Bottom cap, o-ring, 2 agate balls, center cylinder. |
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Empty the 10 dram poly vial sample into the agate grinding vessel (approx. 3-5 g). Add the second o-ring and top cap. |
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| Place grinding vessel in the ball mill grinder and screw tightly to hold the vessel in place. |  |
| Start the machine by closing the door of the ball mill grinder. |  |
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While the sample is being
ground, use compressed air to remove excess sediment left in the original
sample container. After 5 minutes, remove vessel from grinder by opening lid and unscrewing the holding mechanism. |
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Empty the sediment onto a piece of weighing paper.
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| Use the plastic spoon to scrape off the sediment adhering to the vessel or use the small brush. |  |
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Pour the ground sediment back into the vial and set the grinding vessel aside for acid washing. |
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Label the vial with a "G" to denote that it is ground and return sample to box. |
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