HOW TO TAKE YOUR SEM SAMPLES

 

  • Important note: In order to comply with Regulation 20 of CAR 2012 the air sample must be collected by a UKAS accredited lab in order for us to accept the volume sampled figure and produce a fibre in air concentration, otherwise we will only be able to provide a fibre identification and fibre density on the filter.
  • Preferably use gold-coated polycarbonate filters from Lucion’s Laboratory by emailing lab@lucion.co.uk. These are already mounted in filter heads with a cap. Alternatively, cellulose nitrate filters of pore size 0.8-1.2 microns may be used
  • Take an air sample preferably of 1440 litres. This will give the highest accuracy (i.e. the lowest detection limit of 0.0005 fcm-). Lower volumes of air may be sampled, but the accuracy will suffer, ie: we will not be able to report a result as low as 0.0005 fcm-. As a general rule do not sample less than 480 litres. Remember, for the gold coated polycarbonate filter heads, remove the cap before starting the sample and replace the cap after the sampling is completed.
  • Gold Coated Polycarbonate Filters: The gold-coated polycarbonate filter heads should be placed in small sealable sample bags identified with your sample reference number from the Sample Submission form.
  • Cellulose Nitrate Filters: If you use cellulose nitrate filters collect a sample and preferably put each of them in separate small sealable plastic containers; if you use a plastic sealable sample bag make sure you double bag and seal them. Do not directly handle this filter as the filters can easily become damaged or contaminated. Try to use clean flat ended tweezers or similar.
  • Complete fully the SEM Sample Submission Form.
  • Post the filters and the sample submission form in a padded envelope to: Laboratory, Lucion Environmental, 7 Halifax Court, Dunston, NE11 9JT.