Someone’s rightly said nothing here is immortal. The evolutionary world has overtaken the logic, perhaps there never was, but if it at all was, it may have been defied now, when something that was designed for music is transformed to act as a chemical testing platform. What say?

Spanish scientists have experimented with a standard computer CD drive, to develop it into a chemical testing device capable of detecting the presence of various pesticides.

How and why did the whole thing come together?

With the intention to save on the lab costs, colleagues from the Angel Maquieira, Polytechnic University of Valencia, fixed together two extra light sensors inside a CD player.

It’s working?

A software has been installed to control the way the CD player plays a disk. While the first light sensor used, checks for the disk part featuring the sample using black marks on the edge, the second sensor scrutinizes the sample itself, measuring the quantity of laser light passing through the disk.

Results of the usage

Researchers used the developed player in order to detect traces of three different pesticides in the experimentation phase. The sample were treated using a set of reactions that produce an amount of dye or silver. The level of dye or silver depends on the light that passes through the disk to the second sensor, that is inversely proportional to the amount of pesticide in the sample. Researchers believe thousands of samples could be placed on a single disk and further calculated to the smallest decree.

It may surely be too early to evaluate the modified device, however, this surely boasts of near accurate results already. The researcher also believe their find could move to a new level of success, once the next generation of DVD players, that work at higher laser frequencies are more frequently available and cost little cheaper.

{Source: MedGadget]100500