municipal wastewater treatment chemicals
Links

Cotton Sheets
Thread count is another important factor to consider when choosing flannel sheets. While the higher the thread count of regular cotton sheets, the better the quality, with flannel sheets, this is less important. Instead, focus on the fabric weight and overall feel of your bed sheets to gauge their quality.

Materials play a large role in the feel of your sheets, but how the material is woven can change how sturdy, soft, or thick it is. While you may pay close attention to thread count and material, you should also take into account the type of weave.
In its most basic form, microfiber is polyester woven extremely fine. Because microfiber doesn’t stain, they make great sheets for kids, if you’re eating in bed, and for those who sleep with their dog. It’s softer than polyester but less breathable than cotton making it good for cold weather.
Researchers say that the term bed sheet was first used in the 15th century, but it wasn’t until 1959 that the fitted bed sheet was invented, by the American, Bertha Berman.

Flannel:Flannel is a material most people are likely familiar with from flannel shirts, but it is also a material used for bedding. Traditionally only made with wool, flannel is now made with a variety of materials. Cotton and polyester are the most common.

