- Scanning Electron Microscope (SEM)
- Material Samples
- Asbestos Fibres in Air
- Fibre Counting
- How the SEM works
- SEM Images
The UKAS Accredited and experienced laboratory team analyse samples using a Scanning Electron Microscope (SEM) which has a magnification capability of up to 300,000x. Compare that to the industry standard Polarised Light Microscope (PLM) that has a magnification of no more than 1000x used by most Labs in the UK and the difference is clear.
All samples sent in are analysed for asbestos using a Scanning Electron Microscope with an Oxford INCA X-sight EDXA (Energy Dispersive X-Ray Analysis system). The SEM is a high-performance, Scanning Electron Microscope with a high resolution of 3.0nm.
The low vacuum mode, allows for observation of specimens which cannot be viewed at high vacuum due to excessive water content or due to a non-conductive surface. Scanning Electron Microscopy (SEM) is a powerful method of imaging asbestos fibres.
SEM analysis can be used to examine surface features, textures and particles that are too small to see with standard optical microscopes.
Test4 Asbestos provides an identification service for asbestos in dust, soil and building material samples. There are several types of fibre, and it is important to be able to separate “dangerous” fibres, like asbestos, from less dangerous ones, e.g., mineral wool. It is possible to identify organic fibres (e.g., cellulose and textile), synthetic inorganic fibres (e.g., mineral and glass wool), natural mineral fibres and asbestos.
Asbestos in building materials and dust samples are analysed using Scanning Electron Microscopy (SEM).
- High Magnification Bulk sample analysis using the SEM is our standard service at no extra charge. The UKAS accredited and experienced laboratory team analyse samples using a Scanning Electron Microscope (SEM) which has a higher magnification of 300,000x in comparison to the industry standard Polarised Light Microscope (PLM) which is restricted to a magnification of no more than 1000x. The industry standard PLM is limited as the wavelength of light, the method used for magnification by PLM, cannot show things that are smaller than its own wavelength.
- Focus As some samples do not have flat surfaces, under magnification the bumps show as mountain landscapes. A light microscopy would only be able to focus only on the peaks, or the valleys, or points in between. The SEM can have all of these features in focus at the same time, enabling us to see and understand the true shape we are looking at.
- Clarity The images produced by the SEM are easy to understand as objects because the output is a “sensible looking” picture, not a indistinguishable image that requires years of practice to understand its real-world significance.
- EDX analysis results When samples are viewed from an SEM, the x-rays generated by the sample are analysed using an Energy Dispersive X-ray (EDX) component which illustrates a qualitative elemental analysis on samples being analysed, providing you with accurate results.
Our SEM prices are lower than other companies PLM prices
IMPORTANTTest 4 Asbestos uses PayPal to safely and securely process your payment
- You do not need to have a PayPal account. If you do, you can use it
- If you don’t, simply choose “Don’t have a Paypal Account” on the payment page
- Next choose the Number of Samples you need to take with your Kit from the “Drop Down Box” and complete the payment process.