Better to take a scrap PWB and a few of the oxidized parts and run them through your process. Wetting balance results and real process results are too often two completely different things. Odin -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of John Burke Sent: Thursday, April 26, 2018 12:28 PM To: [log in to unmask] Subject: Re: [TN] Flux question I doubt that ROLO will work you need to run solderability testing using your flux and a wetting balance tester. Sent from my iPad Pro On Thu, Apr 26, 2018 at 10:07 AM -0700, "Jose A Rios" <[log in to unmask]> wrote: Is ROL0 flux an adequate one when faced with having to solder marginally oxidized components. Or should a different flux type be selected. Application is ground based/hi-rel (non flight). Flowdown is J-001 (not space addendum). Thanks…. José (Joey) Ríos, Sr QA Engineer Mission Assurance Manager Kavli Institute for Astrophysics & Space Research Massachusetts Institute of Technology [log in to unmask] (617)324-6272