The detection limit varies between analysis of a single swab sample (Baseline or Insights) and multi swab analysis (Standard Screening Assessment) due to the amount of extractant added to the sample tube at the lab. When all samples arrive at the lab, the technician adds a specific amount of extractant to the sample tube. The [...]
Area by area isolated main problem to the kitchen (shit sampling off GIB). Despite sample site selection, suggestion to me, is a hidden smoker. One partner with a habit the other doesnt know about. If they were both using, you would expect to see it through the property. Need to find a way of checking [...]
The meth residues in the area by area sampling are higher in the kitchen range hood (4.3) than the meth your BIC identified (2.4). Why is this?
The BIC approach collects less meth where meth is present. Go over twice not three times and spread the methanol further. So pick up less. Still points to meth occurring over 6 months not 10 days. Meth habits do not go away. If the level of 2.4 was built up in 10 days, then after [...]
They are equally accurate. Either approach can be compared to sampling using the same approach. The difference is that using individual samples allows a more direct relationship to the Standard to be established. This is likely to be important when it comes to clients who have used BIC in the past. Still better to shift [...]