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.
How to inspect your Filter Media and evaluate it: 1  For sand filters, it's hard to inspect the filter sand, because you will need to remove the top dome, with the special wrench, or you may need to cut pipes to remove a top mounted multiport valve. 2  But if you were to inspect your sand filter sand bed, here's how I do it.ere's how to know when that time will be. Lifespan of Filter Media Types: Under Normal conditions, for well-maintained pools, Undersized filter systems or poor water balance can strain your filter media. In fact, the large range for cartridge filter replacement depends on how well sized the pool filter is.