It is worth repeating that straight-chain (ethanol, propanol) and branched-chain (iso-propanol) aliphatic alcohols have no inherent advantage over water when water-soluble salts from capacitors have to be removed. Further, against their use is that they are more expensive than water, more flammable than water, and in the case of anhydrous ethanol, extremely difficult to keep dry because it is so avid for water, even that from surrounding air.
Thorough washing, using a hand-operated spray bottle, with clean warm (<50°C) water containing a drop of household non-ionic detergent in each pint or so, followed by equally thorough rinsing with clean warm water, is effective. If any stubborn deposits remain before the rinsing step, a cotton bud (tip) is much preferable to a toothbrush for their removal.
After the rinses (plural) with clean water, anhydrous ethanol can do a good job of dissolving and removing the residual water. However, this is an expensive and flammable way of doing what standing the MLB vertically in a warm dry location for several days can do equally well, or a current of warm dry air can do more quickly.
Industrial PCB-cleaning uses sonication in aqueous media, a sophisticated form of 'dishwashing'. Volatile non-aqueous solvents are not used except to remove water-insolubles. Above all, flammable, narcotic or toxic solvents are not recommendable for use when there is no effective positive ventilation of the working space.
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Thorough washing, using a hand-operated spray bottle, with clean warm (<50°C) water containing a drop of household non-ionic detergent in each pint or so, followed by equally thorough rinsing with clean warm water, is effective. If any stubborn deposits remain before the rinsing step, a cotton bud (tip) is much preferable to a toothbrush for their removal.
After the rinses (plural) with clean water, anhydrous ethanol can do a good job of dissolving and removing the residual water. However, this is an expensive and flammable way of doing what standing the MLB vertically in a warm dry location for several days can do equally well, or a current of warm dry air can do more quickly.
Industrial PCB-cleaning uses sonication in aqueous media, a sophisticated form of 'dishwashing'. Volatile non-aqueous solvents are not used except to remove water-insolubles. Above all, flammable, narcotic or toxic solvents are not recommendable for use when there is no effective positive ventilation of the working space.
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