They are cleaning the boards, but isn't the flux bonded in the solder joint so that when replacing a component, for instance, we would be mixing two fluxes? Thanks. Dan Cavaliere Charles Caswell <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 09/20/01 10:33 AM Please respond to "TechNet E-Mail Forum." To: [log in to unmask] cc: Subject: Re: [TN] Mixing fluxes If the subcontractor ( your company ) is cleaning the assembly after soldering you will not be mixing flux. There should be no NR200 left on the boards. Charles Caswell Process Lead, PCB Frontier Electronic Systems -----Original Message----- From: TechNet E-Mail Forum. [mailto:[log in to unmask]] Sent: Thursday, September 20, 2001 9:49 AM To: [log in to unmask] Subject: [TN] Mixing fluxes Does anyone know of any data concerning mixing fluxes, specifically Kester 965 and Alpha NR200. Our situation is that we use Kester 965 in our wave solder and rework process. We have some boards being built by a subcontractor using Alpha NR200. Can we rework these boards safely with Kester 965 flux? Thanks! --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------