Electronics Forum | Tue Jun 24 12:26:33 EDT 2008 | dyoungquist
We are purchasing an ultrasonic cleaner to clean pcb asseblies that have been produced with water soluble flux based solder. After cleaning a batch of assemblies, the water in the cleaner will need to be disposed of. My question is: Do we need to
Electronics Forum | Wed Jul 02 12:32:30 EDT 2008 | hegemon
We use a "water Eater" to boil off the water, it escapes as water vapor. The residue we collect and dispose of as part of out Hazmat process. Keeps everything out of the drains.
Electronics Forum | Tue Jun 24 14:47:25 EDT 2008 | bschreiber
There is also an article in the March 2007 issue of U.S. Tech magazine that reviews ultrasonic cleaning technology for PCBs titled "Reducing the Cost of Misprinted PCBs". The information is also relevant to post reflowed PCBs. A PDF copy of the art
Electronics Forum | Tue Jun 24 12:42:35 EDT 2008 | slthomas
Your flux residues may be acceptable for your drain, but the solder balls won't be. You'll need to filter and dispose of the filters per your local city, county, and state regs. Either that or just boil the water off and dispose of the dry remains wi
Electronics Forum | Tue Jun 24 13:46:21 EDT 2008 | bschreiber
I know it is not what you want to hear, but first and foremost, you must consult your local regulating agencies and here is why: Solder paste contains heavy metals. We are all familiar with the problems associated with lead, but lead free solder pas
Electronics Forum | Tue Jun 07 18:51:40 EDT 2005 | tony19
I need to know about the quality of water to clening and deionization degree. Thanks
Electronics Forum | Tue Jun 07 20:19:31 EDT 2005 | davef
That depends a great deal on what you are cleaning and how clean do you want to get the substrate. We've seen cases where 0.1 uS-cm was insufficiently good and others where 10 uS-cm was more than sufficient.
Electronics Forum | Wed Dec 17 16:12:01 EST 2003 | Ashok Dhawan
Anyone who has experienced and resolved tarnishing of Aluminium surface upon cleaning with DI water + saponifier. The aluminium surface is protected with conversion coating (clear) which is turning black when exposed to saponifier solution.
Electronics Forum | Fri Feb 13 13:27:22 EST 2004 | blnorman
So Deionized water has high ion concentrations, never knew that.
Electronics Forum | Mon Dec 22 18:08:38 EST 2003 | Tom B
Dave is absolutely right! A question is there free standing DI water left on Parts after wash and rinse, if so this can definetly exacerbate the problem. You can try to remove excess DI water by using an IONIZER air source to blow off any water. S
