6 replies to this topic

[Omar (OZ)]

The bottom if the Netduino is a CSI's dream, this thing hold your fingerprints like glass. So it tends to get a some smudges and a little greasy. With what could I clean it or should I not? I would guess one of those microfiber cloths, with NO cleaning liquids... Anyone else thinking this?

[Stephen]

The standard solvent used for cleaning PCB is 100% (or close to it) isopropyl alcohol.

[Omar (OZ)]

The standard solvent used for cleaning PCB is 100% (or close to it) isopropyl alcohol.

Is it also safe to use on the top of the board? Is 91% good enough?

[Stephen]

Is it also safe to use on the top of the board?

Isopropyl alcohol is used for cleaning flux residue after soldering. It is safe to use on top of the board.

Is 91% good enough?

Isopropyl alcohol is usually specified as 99.x% and not 100% because it is hygroscopic. I think it's best to get the "100%" kind. With a 91% solution, the other 9% might not evaporate and leave residue instead.

[Omar (OZ)]

Isopropyl alcohol is used for cleaning flux residue after soldering. It is safe to use on top of the board.


Isopropyl alcohol is usually specified as 99.x% and not 100% because it is hygroscopic. I think it's best to get the "100%" kind. With a 91% solution, the other 9% might not evaporate and leave residue instead.

thanks for the help.

[segu]

Isopropyl alcohol is usually specified as 99.x% and not 100% because it is hygroscopic. I think it's best to get the "100%" kind. With a 91% solution, the other 9% might not evaporate and leave residue instead.

Isopropyl alcohol is made without water, only alcohol. But we are in planet Earth and the air has water in suspension (% relative humidity) so you use it in the air and the alcohol takes the water from the air, open the bottle and use asap . Can not have 100% alcohol in air in planet earth.

[Chris Seto]

As a general rule, you shouldn't really ever need to clean PCBs liek you would, for example, a keyboard. If you do, use at least 95% alcohol. Don't overdo it.