Mantis 5000 Specifiche Scaricare il pdf (Pagina 22)

You must first install the liquid sample holder.

1. Place the protruding reference plate in position in the reflectance port, and

position the cuvette at the transmission port.

2. Set the instrument as detailed in the transmission measurements

section.

Note

Parameters activated by a radio button that are not specifically mentioned in the

following procedure should be set to 'Off' (e.g., the Signal-to-noise mode radio

button). These parameters will not affect the procedure.

3. Fill the cuvette with solvent. If necessary, run a baseline as follows:

4. Click the Start button, then Programs, then Cary WinUV then click on Scan.

5. Click the Baseline button. Follow the on-screen prompts to perform a baseline

scan.

Hot Tip

When performing transmission measurements, block the sample beam in the

transmission position with a black masking.

6. Once the baseline correction is complete, the Ordinate status display in the top

left corner of the dialog box will show 'Zero baseline' in red text.

7. Fill the cuvette with the sample and place cuvette in the holder in the same

orientation that was used to collect the baseline.

8. Click the Start button to perform the scan. The Save As dialog box will appear,

allowing the method to be saved as either a data file or a batch file. If the file

is saved as a batch file, all of the method parameters will be stored with the

scan.

Installing the small sample holder

Figure 18. The small sample holder. A = where either the small sample mount or

powder cell are mounted. B = screws for securing the small sample holder to the

DRA. C = screw for holding the small sample mount or powder cell into position. D =

groove for the correct positioning of the powder cell and small spot mount.

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Mantis 5000 Specifiche Pagina 22