Mantis 5000 Especificaciones descargar pdf (Pagina 33)

4. Click the Zero button and wait for the instrument to zero.

5. Place a mirror over the reflectance port, and close the sample compartment. Note the

reading. If the reading is greater than 1.5%R, then either the specularly reflected beam is

not entering the light trap, dirt on the lens is scattering the beam and creating a ’halo’

effect on the reflectance port, or the sample mirror does not have a good specular surface.

If the reading is greater than 1.5%R, you should repeat the check for the specular

component as detailed in the Checking for the specular component

section.

6. Remove the specular light trap and replace the specular port plug. When the sample

compartment is closed, the reading should be approximately 90%.

Attachment options

There are several different attachments options available for use with the external DRA.

These greatly increase the versatility of the accessory. The attachment options are:

• Transmission port cuvette holder

• Centre-Mount Sample Holders

• Small spot kit

• Double aperture accessory

• Polarizer

• Powder cell

• Apertures

Transmission Port Cuvette Holder

The transmission port cuvette sample holder mounts a standard 1 cm cuvette directly in

front of the transmission port. Transmission measurements made with this device at the

transmission port will include the a portion of the scattered component of radiation in the

transmission scan data. The sample holder is mounted into the clip style transmission port

and is illustrated below.

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Mantis 5000 Especificaciones Pagina 33