See references at the end of this link: http://www.kellymom.com/bf/pumping/milkcalc.html I've also really been enjoying Nancy Mohrbacher's articles at http://www.nancymohrbacher.com/blog/tag/for-employed-nursing-mothers (read from the bottom up). Ellen Rubin, MA, IBCLC, LLLL *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html To reach list owners: [log in to unmask] Mail all list management commands to: [log in to unmask] COMMANDS: 1. To temporarily stop your subscription write in the body of an email: set lactnet nomail 2. To start it again: set lactnet mail 3. To unsubscribe: unsubscribe lactnet 4. To get a comprehensive list of rules and directions: get lactnet welcome