I have been waiting for two weeks for my superbrom111, previously geobrom55 or 5500 from the former great lakes, I called, they said they would send me a 2 kilo sample, today i recieved an email stating they could not send it for the process that I am using it for,, geez, wish they said that 2 freaking weeks ago!!! never the less, I have found it elsewhere but at really stupid prices,,,, If any can connect me with------- cas#77-48-5 I would appreciate it, its currently being used in water cooler towers to prevent slim build up.. Thx, Frog