Electronics Forum | Fri Sep 26 16:34:16 EDT 2008 | aqueous
Its not likely your air quality that lowers the test solution's resistivity. Maintaining 60 M-Ohm requires almost constant circulation through DI resin beds. Just natural CO2 (Carbon dioxide) absorbed by the test solution will lower the resistivity
Electronics Forum | Wed Dec 05 23:31:12 EST 2012 | aqueous
This is a (Resistivity of Solvent Extract (ROSE) tester. Per IPC standards, ROSE testers use a test solution comprised of 75% IPA (99% pure) and 25% DI water. -Mike Konrad Aqueous Technologies www.aqueoustech.com konrad@aqueoustech.com
Electronics Forum | Fri Jan 08 12:27:55 EST 2016 | aqueous
The most common method is a R.O.S.E tester. They have been around for 30 years and are an industry standard for ionic contamination (flux and other residues) testing. Manufacturers include: Zero Ion www.aqueoustech.com Omegameter / Ionagraph http:/
Electronics Forum | Thu Nov 10 10:45:32 EST 2011 | aqueous
The use of IPA in automated defluxing systems is nearly extinct for the following reasons: 1. IPA is flammable. In a spray-in-air environment, the already low flashpoint is even lower. 2. IPA is not a great solvent. There are specific containme
Electronics Forum | Wed Apr 07 12:25:32 EDT 2004 | babe
I have a customer that is looking for Stringed Washable beads that the legs of boards sit on top of. They would be dissolvable in an aqueous solution. Any one have an idea where he might find these? Thanks
Electronics Forum | Tue Aug 10 09:21:15 EDT 2004 | davef
Aqueous cleaning solutions using saponifiers and surficants can sometimes be used to clean NC flux residues. Search the fine SMTnet Archive for background and supplier suggestions.
Electronics Forum | Wed Nov 08 15:32:45 EST 2000 | CAL
ACI offers solderability restoration services by using Reduced Oxide Soldering Activation (ROSA) technology to remove the oxide layers from circuit boards or components and then re-tin or otherwise coat them to maintain a solderable surface. The R
Electronics Forum | Mon Nov 27 21:29:57 EST 2006 | davef
Chemical gold is a poorly defined [very sloppy] term that means various thing to different people [as you've demonstrated]. Commonly it is either: * ENIG: 5�m Ni, 0.1�m Au * Immersion gold "Autocatalytic chemical gold plating" - Refers to "electrol
Electronics Forum | Tue Nov 09 11:42:37 EST 1999 | Dave F
Jeff: Try this: ROSA. John�s spot on. I�ll add that it is a fluxless method that reduces the oxides in an aqueous solution. Another source of information is: Trench, M., Hillman, D., Lucey, G., "Environmentally Friendly Closed Loop Soldering,"
Electronics Forum | Tue Dec 28 10:57:53 EST 1999 | Amy Castor
I have tried the water soluble flux and the aqueous cleaners but I got the same results you did; horrible corrosion and a white flaky mess. I know exactly what you're talking about. We do a lot of hand soldering around here, and the magical solutio
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