Then we compared our results with any non-GMO-related claims. Find a list of all the products we tested in our full report. Genetically modified corn and soy are used in a wide variety of foods. Nearly all of the samples we tested of the products that did not make any non-GMO-related claim on the package did, in fact, contain substantial amounts of genetically modified corn or soy.
Below are the types of water filtration media stocked and distributed by Nalco PTS: 1  Anthracite Filter Coal, AnthrafiltÂ® is commonly used as sub-fill and as a component of multi-media filters. 2  Filter Sand and Gravel is also called Torpedo Sand/Coarse Sand/Support Gravel/Filter Gravel/Pea Gravel.
Reverse Osmosis Filters. These systems are plumbed-in with a permanent connection to an existing water pipe. Water is filtered and dispensed through the sink faucet. Reverse osmosis works by using pressure to force water through a membrane filter that removes everything but water molecules.A carbon pre-filter is used to trap organic material and chlorine, which would otherwise damage the membrane.ctivated carbon filters, which are used in the carafe-style and faucet-mounted filters that make up a significant portion of the retail filter market, do not filter sodium and other impurities, such as arsenic.