1.2.1- Preparing the sample

Problems could arise from small grain sizes, preferred orientation effects , sensitivity to hydration...

Once the powder prepared, you have to deposit it on the holder :

- It can be pressed on the holder with a glass slide.

- A very efficient way for avoiding preferred orientation is to dust the sample through a sieve on the holder.

- If you have enough sample (500 mg or 1 g), use a special sample holder which can be vertically loaded.

In short, the ideal sample is quite hard to prepare.