1. Powder: The sample should be dry and water-free, greater than 10mg, and of a particle size suitable for direct tableting, which is finer than 200 mesh.
2. Solution: The sample must be non-toxic and non-corrosive; provide more than 2mL, and the sample should contain as little water as possible (water in the sample can greatly interfere with the spectrum).
3. Bulk/Film: The sample should be dry and water-free, larger than 0.5cm*0.5cm. Hard bulk/film samples are difficult to peak and require prior consultation to confirm if testing is possible; ATR mode requires pressing the sample for testing, and if the sample is fragile, it may be damaged, which you need to be aware of and accept the risk before scheduling.
4. For hygroscopic samples, please provide your own desiccator for storage.
5. For volatile, sublimable, or thermally unstable samples, please use a container with a sealing lid or stopper and seal tightly, and you must specify the sample storage conditions.