The Teflon-coated spike bob (photo) is an optional SmartBob probe specifically adapted for measuring powders and solids material that may adhere to the sensor probe. It is ideal for use in sticky materials such, as silica or “frack” sand, powdered chemicals or minerals, additives and ingredients, or any material that tends to build up on the sensor probe. The Teflon coating on the probe has U.S. Food and Drug Admin. (FDA) approval, which also enables it to be used in bins, tanks, or silos containing ingredients used in animal- and human-food-processing or pharmaceutical environments. — BinMaster, Lincoln, Neb.
This level bob has a Teflon coating
| By Chemical Engineering