>Sodium Carbonate Na2CO3. >Didn't you think about not guessing, but rather just googling >with your laminate name and "development" word? As for not guessing, the MG Chemicals NaOH actually specifies a 1:10 ratio for developer to room temp tap water. Mike H. _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.