pipe_insulationLCS Laboratory Inc., offers tests for residual asbestos dust on the surface. The tests can be used to monitor cleanliness (housekeeping) of the working surfaces in the area where asbestos can be present.   The test can be also used to assess the extent of asbestos contaminated area.

The samples can be collected using micro-vacuuming on PCM cassettes or as wipe samples on Ashless Cellulose Filters. Micro Vacuuming is a way to go for tracing very low asbestos level. It also works well on porous surfaces (like a brick floor on the image on the right). Wipes work better on flat and glossy surface like ceramic tiles, painted panels, steel, glass.

Once the samples are returned to the laboratory we analyse the collected dust for asbestos fibres.  We use 3 different techniques:

DSC015351. Samples are collected using Micro Vacuuming on pre-weighed PCM cassettes. The method is mostly suitable for low dust and asbestos level. The sample is analysed first gravimetrically by NIOSH 0500 with modification and then, the fibres are analysed by PCM using NIOSH 7400 method with modification. Laboratory reports total dust, and number of fibres per sample.

Pro: The most sensitive technique capable to detect about 10,000 fibres which is about 1-100 ug of asbestos. The method can detect the smallest fibres as short as 5 microns

Contra: Results are reported in number of fibres and cannot be compared with existing asbestos regulation. Method is suitable for individual short fibres and bundles.  Type of asbestos cannot be identified by this method.

2. Samples are collected using Wiping Technique. The method is mostly suitable for low dust and asbestos level. The sample is first ashed, and amount of ash is recorded. The fibres are redeposited on MCE filter are analysed by PCM using NIOSH 7400 method with modification. Laboratory reports total mineral dust (ash), and number of fibres per sample.

Pro: The most sensitive technique capable to detect about 10,000 fibres which is about 1-100 ug of asbestos. The method can detect the smallest fibres as short as 5 microns

Contra: Results are reported in number of fibres and cannot be compared with existing asbestos regulation. Method is suitable for individual short fibres and bundles. Type of asbestos cannot be identified by this method.

4 low power3. Samples are collected either by using Wiping  or Micro Vacuuming Techniques. The method is best suitable for coarse dust with large crumbs of construction materials visible by naked eye. The sample is first ashed, and amount of ash is recorded. Residual mineral dust is analysed by PLM, using EPA 600/R-93/116, 400-Point count method with modification. Laboratory reports total mineral dust (ash), and Asbestos Concentration in per-cent units.

Pro: Moderately sensitive technique, capable to detect 100-500 ug of asbestos. Asbestos is reported in Per-Cent units and it concentration can be compared with current guidelines. Large chunks of construction materials are included in analysis. Type of asbestos can often be identified.

Contra: Method is not suitable for very fine dust with fibres under 50 microns. The method is approximately 100 fold less sensitive than the PCM method.

Please call or email us to order your sampling media.