The invention is intended for illicit drug detection, preferably to Cocaine detection in street samples containing in addition to Cocaine also adulterants andor diluents used for increasing the quantity of the product andor for disguising the existence of Cocaine. Said connector comprises means for maintaining the respective ends of the fibres, facing one another. A force applicator coupler couples a force applicator to a force transducer to measure muscle strength. After finishing the plot, the user stores the result to the server end to become a quote image. 3 band, eluting it in ammonia and freeze drying the eluted band to form a powder; and extracting the powder with methanol to remove solubilized silica gel, concentrating the methanol solution and crystalizing the concentrated solution to obtain the bioactive component.