The material does what it says it does. You must mix it in to the dross layer then wait. Then remove the dross by squeezing it through a ladle to separate the solder from the oxides. I have been running the Workshop of Machine Soldering for over ten years for one of the most well known flow solder machine manufacturers. The same course that is run in Dallas in the USA. All the service engineers in the UK think its a great material and it works for them. I think it stinks and I just cant stand the smell so I never use it. If you just sprinkle the material on and leave it the residues will build up. You still have to remove the dross in the normal way it just aids separation. Bob Willis Process Engineering Consultant Electronic Presentation Services 2 Fourth Avenue, Chelmsford, Essex CM1 4HA. England. Tel: (44) 01245 351502 Fax: (44) 01245 496123 Home Page: http://ourworld.compuserve.com/homepages/Bwillis Email: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************