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Disassemble the vessel carefully wearing Nitrile gloves. Clean off any powder on the lid or puck with a Kimwipe or Teflon spatula. Carefully remove the puck from the vessel. Pour the sample onto a clean piece of weigh paper. If any powder remains, use a cleaned Teflon spatula to dislodge it.
Never use metal to dislodge or scrap out sample material, as any grooves or scratches in the vessels will increase the risk of contamination.
Cleaning the Grinding Vessels
Vessels must be cleaned in between samples and after all samples have been run for the day. Vessels should never be put away wet. This alters and tarnishes the grinding vessel.
In Between Sample Runs
- Wearing nitrile gloves, wash the individual pieces of the grinding vessels with tap water and a small piece of a scouring pad (no soap). Rinse with DI water.
- After each piece is washed, dry it with a Kimwipe, immediately spray it with isopropyl alcohol, and wipe it down with a Kim Wipe. Do not use the ship's compressed air line to dry pieces as the air is too dirty.
- Lay the pieces on, and cover vessels with Kimwipes.
After the last run for the day
1. Take a scoop of quartz sand and put it in your vessel(s) and run it as you would a sample for several minutes (~3 min should be adequate).
2. Remove the vessel and empty out the sand. Scrub the pieces with tap water and a scouring pad and rinse with DI water. Dry with a Kimwipe, and then spray with isopropyl alcohol and wipe down with Kimwipes. If your vessel is particularly dirty run a combination of quartz sand, a little hot water and detergent (Borax). This can be run for several minutes. A thick paste will form and then you clean it as normal.
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