All of the asbestos identification performed by ADMAS Ltd is carried out by our team of experienced analysts all of whom are qualified to BOHS P401: 'Identification of Asbestos in Bulks'.
Our team of analysts have, since 1999, had a 100% success rate in the national AIMS quality control scheme (Asbestos in Materials Scheme).
As a company, ADMAS Ltd has held UKAS accreditation for the microscopical examination of asbestos since 1990.
Principles Of Analysis :
The procedures detailed below are based on the method laid down in the HSE document entitled "Asbestos: The analysts' guide for sampling, analysis and clearance procedures" HSG 248.
The analytical method employed is that of polarised light microscopy together with dispersion staining in dark field and phase contrast microscopic conditions.
The stages of the method are: -
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1. Initial examination of the sample at low magnification.
The sample would be thoroughly broken down and investigated to identify if there are any fibres present.
2. The fibres in the sample are isolated and cleaned to ensure they are free of matrix.
3. The cleaned fibres are then mounted in the appropriate refractive index liquid and analysed with a polarising microscope equipped with a centre stop objective.
The properties listed below are used to identify the types of asbestos fibres present in the sample: -
- Colour.
- Pleochroism.
- Morphology.
- Birefringence.
- Angle of Extinction.
- Sign of Elongation.
- Dark Field Dispersion Staining.
4. All results are noted on an analysis sheet and passed through to our administration department, where the results are entered, certificates printed and dispatched.
Normal sample turn around is 24 - 48 hours, although our premium service ensures same day result reporting.
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