4. Conclusion
The use of a smart phone application was successfully applied
to the analysis of colourimetric products to obtain analytical data
for quantitative analysis. Methamphetamine concentrations in
seized Yaba samples analyzed using this method showed very good
correlations to accurate GC-FID data. This demonstrates a
significant potential to develop an accurate, rapid, real-time, onmobile
quantitative test for the analysis of controlled substances.