1 In Data Tools, click Data Validation, and then click Data Validation. 2  In the Input message tab, check Show input message when cell is selected. 3  In Title, enter a title for the pop-up window. 4  In Input Message, enter the text you want to appear in the pop-up window.
Melamine resin contains melamine in a manner similar to table salt containing chlorine. While melamine is dangerous to ingest, melamine resin is not. Melamine is the chemical that has been contaminating pet-food lately. Melamine resin is the thermoplastic from which plastic-ware, counter-tops, etc are made.
Chloramine is a combination of chlorine and ammonia. 1  Chloramine is used to disinfect water supplies (like the Hetch Hetchy system.) Water utilities often refer to chloramine as monochloramine. 2  In reality, chloramine exists as three different forms or species: monochloramine (NH2Cl), dichloramine (NHCl2) and trichloramine (NCl3).