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Handheld Raman

 

 

SciAps Handheld

Raman Spectrometers

are the robust, battery-powered dispersive Raman spectrometer designed for the non-destructive, real time identification of solids, liquids, pastes and slurries. They have a wide range of applications for material identification, including plastics, organometallic compounds, pharmaceuticals, botanical specimens, octane number in fuels, edible oil, rocks and minerals.

SciAps' lightweight portable Raman spectrometers can collect samples through sealed bags, transparent bottles, flasks, vials, and ampoules, protecting users from direct exposure to hazardous substances. They are lightweight, have no moving parts, and can operate continuously for five hours on their rechargeable battery, allowing them to be used in challenging field applications in addition to laboratory research.

The analysis methods or acquired data can also be communicated with a computer via USB connection for the ultimate portability.

Application:

  • Industrial raw materials identification
  • Reaction monitoring
  • Pharmaceutical process monitoring
  • Chemical identification
  • Polymer composition and structure surface
  • Science analysis
  • Medical cell tissue research
  • Botanical research
  • Octane number in fuels
  • Edible fats and oil analysis for the food industry
  • Authentication of antiques and historical works of art
  • Characterisation of inclusions embedded in a geological matrix
  • Identification of daughter minerals and other organic components within geological materials
  • Molecular structure and stoichiometry studies assays for inorganic and organic components in liquids
  • Classification and authentication of gemstones

 

 


New features:

  • 4.3" large TFT LCD Display
  • Reduced weight, down to 1.7 kg
  • 1030-nm laser eliminates competitive fluorescence
  • Expanded spectral range
  • Enhanced resolution
  • Expanded number of samples identified
 

 


Examples

 

Basic functions with 785 nm laser

 

Spectra Taken through 8mm Glass Vials

Spectra taken through 8 mm glass tube.

The unique peak values shows the characteristics of unleaded gas and distinguish well among Unleaded 85, 87 and 91.


Two dimensional Principal Component plot for various types of microcrystaline cellulose.

The Inspector supports advanced chemometric algorithm processing which is required for materials that are difficult to discriminate. Methods can be created with multivariate algorithms for pass/fail discrimination or simple correlation models can be created for searching material libraries.

 

785 nm for geology

 


Cinnabar (HgS) was a common red pigment used in historical times and the principal ore mineral of mercury.

The samples above were obtained from various locations and identified with the RockHound. Cinnabar has primary peaks at 254, 277, and 340 cm-1 in the Raman fingerprint region. A weak band at 1008 cm-1 has been identified as gypsum.

Lower Frequency Region used for Pigment Identification

Lower frequency region used for pigment identification.

The pigment has been identified as red ochre, or hematite, with peaks at 280, 406, and 608 cm-1. The 280 cm-1 peak was slightly offset to frequencies lower than the standard 293 cm-1 band in hematite because this peak overlapped with the lattice modes of other minerals in the sampling area (e.g., calcite).

 

1030 nm laser eliminates or mitigates fluorescence

 


Elimination of competitive flouresence

While 785-nm laser cannot identify the above explosive precursor (3,4-DNT) and pharmaceutical excipient (Folic Acid), the Inspector with the 1030-nm laser can obtain very distinguishable peak characteristics.

The influence of competitive fluorescence may overwhelm the Raman spectrum in lower excitation systems including 785 nm laser excitation. A longer wavelength laser excitation in Raman spectroscopy can be used to eliminate or mitigate such influence, but the longer wavelength laser excitation results in a sacrificed Raman intensity with a ratio of 1/λ4.

This issue is overcome with a low temperature cooled class III-IV semiconductor detector that has high quantum efficiency in the region of interest.

 

Microscope & micrometer-level positiong

 

Raman microscopes have become valuable analytical tools in pharmaceutical, plastics, semiconductor, and geology applications due to their high sensitivity and ability to analyse heterogeneous samples. A digital microscope and a positioning stage are available to perform micrometer-level positioning and inspection, allowing images to be captured for image analysis and published materials.


 

 

 

Specifications:

Spectrometer Features

  Model
Inspector 300
Inspector 500
  Laser 300 mW 785 nm Class III B 300 mW 1030 nm Class III B
  Detector Cooled CCD array Cooled Type III-IV semiconductor array
  Raman Spectrum Range 175 - 2875 cm-1 100 - 2500 cm-1
  Spectral Resolution

6 ~ 8 cm-1

8 ~ 10 cm-1
  Battery Rechargeable and removable Li battery: 4-hour operation
  Power

100-240 V AC, 50-60 Hz, AC to DC wall adapter
Charge via USB connection


Dimensions

  Weight
3.75 lbs (1.7 kg)
  Size
7.5" x 6.9" x 1.7"
  Operating Temperature
-20°C to 40°C


Software

  Analysis NuSpec or NuSpec Pro
  Spectral Library Options
  • CWC (Chemical Warfare Agents, TICS, TIMS)
  • Law Enforcement (Narcotics, Explosives)
  • Chemical Library
  • Pharmaceutical
  • Plastics
   

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