A paper test strip will detect toxins in food. Free Technical Library News

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Paper test strip detects toxins in food

24.07.2013

Researchers at Colorado State University have developed paper test strips that can quickly test a sample for toxins. Simple, cheap devices are incredibly useful: imagine being able to quickly test your air, food, or water for toxic metals and many other potentially dangerous contaminants. In fact, a "pack" of paper analyzers is a whole laboratory in your pocket with a couple of "lab assistants" to boot.

At one time, pregnancy test strips turned out to be the same useful invention, but chemical analyzers of American inventors can be even more useful. The need to conduct a chemical analysis arises very often, not only in the laboratory or at the factory, but also at home - which of us, for example, is absolutely sure of the quality of food?

A paper analyzer allows you to quickly and cheaply assess the concentration of a toxin or detect a biomarker of a disease.
A test strip for chemical analysis has the simplest device and is a piece of paper with markings and a thin capillary, along which, like a thermometer, a liquid moves, reacting with a change in volume to a certain concentration of a substance. The paper test strip can be made with a variety of liquids that react to all metals, various toxins, and even biomarkers. The latter is of particular interest, as it makes it possible to quickly perform some medical tests at home.

Using the test strip is very simple: you drop a solution with a sample into a certain place on the test strip and look at how many divisions the column of liquid has risen. In this way, the presence and concentration of the desired substance can be quickly determined. Such a test costs 200 times less than a laboratory test and takes only 15 minutes. At the same time, any person can interpret the results of the analysis - just by looking at the test strip with the naked eye.

The developers plan to start commercial production of new paper analyzers and have already come up with a name for them - Chemometer.

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