The Hypophosphite content in an Electroless Nickel bath is only VERY casually related to the Phosphorous in the deposit. The main determiner (is that a word?) is the pH of the bath. Another factor is how long they replenish the bath before dumping. The chemistry vendor should be able to give data on what the P content is SUPPOSED to be, if the pH is correct. Rudy Sedlak RD Chemical Company ############################################################## TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c ############################################################## To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TECHNET <your full name> To unsubscribe: SIGNOFF TECHNET ############################################################## Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information. If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or 847-509-9700 ext.5365 ##############################################################