Typically particles are impacted on a surface from an airstream, glued to a tape, or filtered from a liquid. For filtration you can use any standard filter such as cellulose nitrate Ø 47 mm filter patches (optional Ø 25 mm filter patches) and a similar type of membranes. On those membranes the SPE easily counts and identifies inorganic particles with metal.ID > 5 µm. Identification of organic particles such as fibres with raman.ID is limited to particles larger than > 25 µm in each dimension. They effectively shield the Raman laser focus from the filter material. To identify particles as small as 5 µm with imaging led Raman spectroscopy we suggest the use of the dedicated gold coated filtr.AID membranes. Adhesive tapes that are typically used in forensic investigations can also be mounted directly in the instrument.
Sample Preparation – industrial
Sample holder for standard circular filter membranes for particulate contamination analysis, such as Ø 47 or Ø 25 mm: Cellulose Nitrate or MCE (mixed cellulose ester), Nylon Membrane and Net Filters, PP Prefilters and Net Filters and many more
Easy to use filter patch holder
2-position sample changer for Ø 47 mm (optional 4-position Sample changer for Ø 25 mm)
Particles are glued to the surface
Standard Patch advantages
Relatively cheap
Perfect particle archive solution: Glued particles don`t fly away and less possibility of cross contamination
Brightfield images with full colour information (white background)
Best for metal.ID (Particles > 5 µm)
Suitable for raman.ID (Particles > 25 µm and no thinner than 20 µm)
Isolation of organic particles > 5 µm
Ideal for particle analysis
The filtr.AID membrane is the ideal substrate for microparticle analysis and identification. Particles can be isolated from most liquids and gases using standardized membrane filtration by means of vibrational spectroscopy. The effective filtration area, the area on which the particles are located, is accurately defined by the filtr.AID funnel.
rap.ID's Single Particle Explorer (SPE) darkfield illumination technique produces excellent contrast between the particles and the background in the microscope image.
rap.ID's SPE in combination with filtr.AID technology perform qualified sample preparation in a matter of minutes.
