
Sample Preparation Using the PCH-150 Powder Cell Holder
Figure 40. An exploded view of the powder cell.
1. Disassemble the powder cell holder. DO NOT disassemble the reference cell holder.
Place the front cover onto the flat surface of a balance scale, face down, and load the
quartz window into the cover.
2. Record the weight of the two sample holder components.
3. Load a portion of the sample into the powder cell cavity over the quartz window.
Gently tap the side of the holder against the work table, or use a spatula to smooth the
surface of the sample. Repeat this loading process until the desired sample depth or
sample weight is achieved.
4. Record the weight on the balance scale and calculate the total weight of the powdered
sample.
5. Estimate the average height of the sample by measuring the distance from the sample
to the top surface of the container.
6. Load the plunger and spring over the sample and screw the body over the entire
assembly. Screw the pieces together snugly, but do not apply excessive force.
7. Examine the surface around the sample holder for any loose sample material that may
have spilled out of the sample holder cavity. Weigh the spilled powder and make
corrections to your calculation in Step 4.
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