Tony, I went through an exercise with my previous company about 18 months ago. We tried around 15 or so different no-clean flux pens (including the Kester one you quote). Nearly all suffered to varying degrees with white residues. There was one which stood out from the rest and also performed well in environmental testing. It was a Qualitek "no-clean rework wand". For more info contact Imy Nuseeb, Development Manager at Qualitek in the UK. e-mail: [log in to unmask] or Tel +44(0)151 334 0888. Best regards, Martin Christie -----Original Message----- From: Tony Conlon [mailto:[log in to unmask]] Sent: 13 June 2001 14:36 To: [log in to unmask] Subject: [TN] A solution to white residues after smt rework ... We're using: Kester #186 Flux Pen Microcares Vericlean (applied from aerosol can thru a hand-held brush) All our material is surface mount, no bga's, We run a no-clean process ... Problem: We clean after repair/rework for cosmetic reasons ... the cleaner we are using leaves a trace amount of white residue behind ... I have also tried Multicores Mini-Fluxers & Mini-Cleaner ... less residue ... non-consistant ... not 100% satisfied. Does anyone have a tried and trusted system? Regards, Tony. ---------------------------------------------------------------------------- ----- 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 ---------------------------------------------------------------------------- ----- --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.256 / Virus Database: 129 - Release Date: 31/05/01 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.256 / Virus Database: 129 - Release Date: 31/05/01 --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------