Originally Posted by Imbuter2000

Very good, thanks

Other dilemmas:

In the Kester data sheet of the RA cored wire http://www.kester.com/Data%20Sheets%...14Jun07%29.pdf they wrote this about the "no-clean" issue:
"Kester 44 possesses excellent fluxing ability, the flux residue is non-corrosive and non-conductive under normal conditions of use. When exposed to an elevated temperature and humidity environment (38°C, 94% RH) for 72 hours, there is no evidence of corrosion caused by the flux residue. Throughout its many years of wide usage, 44 Rosin Flux has produced many billions of soldered connections. In all these billions of solder joints, involving the most delicate and critical of electrical and electronic components, there has never been an authentic instance of corrosion by the flux residue under normal conditions of use. This mild property of the residue permits leaving the flux on the assembly for many applications."
Note that they wrote this for the RA cored wire. What do you think about it?

In the data sheet of the RMA cored wire at http://www.kester.com/Data%20Sheets%...15Jun07%29.pdf they wrote this:
"Process Considerations:
Solder iron tip temperatures are most commonly between 315-371°C (600-700°F) for Sn63Pb37 and Sn62Pb36Ag02 alloys and 371-427°C (700-800°F) for lead-free alloys. Heat both the land area and component lead to be soldered with the iron prior to adding Kester 285 cored wire. Apply the solder wire to the land area or component lead. Do not apply the wire directly to the soldering iron tip. If needed, Kester 186 and 186-18 Mildly Activated Rosin Flux may be used as a compatible liquid flux to aid in reworking soldered joints. Kester 186 and 186-18 Mildly Activated Rosin Flux are also available in Flux-Pens® for optimum board cleanliness."
Do they have a good reason for suggesting the use of external flux only for reworking soldered joints?

I see that their rosin flux cleaner, the "Saponifier 5768 Bio-Kleen", is sold in a mimimum quantity of 1 galloon for about $100, that's too much for our use even considering that it only lasts a few years...
So... what alternative commercial rosin flux cleaner would you suggest to take?