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6 VERTEX 70v User Manual

GENERAL

• External sample compartment (XSA)

• HTS-XT module (H

igh Throughput Screening Extension)

• Fiber optic coupling module with MIR or NIR fiber probes for solid and

liquid samples

• FT Raman module (e.g. RAM II)

• FIR bolometer

• External, water-cooled sources

There is also the possibility to connect several accessories simultaneously (e.g. a

water-cooled Hg-arc source at the rear side, the RAM II FT-Raman module at the right

side, a fibre optics coupling at the right front side, the HYPERION IR microscope at the

left side and a bolometer detector at the front side).

Diagnostic routines help to maintain optimum instrument status and performance. The

internal validation unit (IUV) is located inside the spectrometer. It contains standards

(test samples) used for the validation and testing of the instrument.

Note: Depending on the spectrometer configuration you have ordered,

your spectrometer may not include all options that are described in

this manual.

The evacuable VERTEX 70v spectrometer allows measurements under vacuum condi-

tions, i.e. unwanted atmospheric interferents (e.g. water vapor or carbon dioxide) are

eliminated nearly completely from the spectrometer interior. Evacuating the spectrome-

ter is more efficient than purging it or using desiccant cartridges. The result of an opti-

mal measurement under vacuum conditions is an IR spectrum in which no H

O or CO

absorptions mask weak spectral features of the sample.

The spectrometer design enables a separate evacuation of the spectrometer compart-

ments, i.e. either the complete spectrometer interior (sample compartment plus the opti-

cal bench) or only the optical bench can be evacuated. Vacuum shutters (so called

flaps), which can be equipped with optical or IR windows, allow a ventilation of only the

sample compartment in order to preserve the vacuum in the rest of the optics compart-

ment during a sample exchange or an accessory installation. Evacuating and venting

the sample compartment and/or optics are computer-controlled. Moreover, the spec-

trometer is equipped with two pressure sensors providing for the display of the current

pressure inside the spectrometer optics and/or sample compartment.

VERTEX 70v is supplied with an efficient vacuum pump that can evacuate the spec-

trometer optics within a few minutes. The oil-free vacuum pump prevents the spectrom-

eter optics from being contaminated by hydrocarbons.

Bruker VERTEX 70v User Manual

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