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9 comments
Dan KE8SMQ

@tubetime IBM Cleaning Fluid was originally 1,1,1-Trichloroethane

1 March at 0:56 | Open on mastodon.hams.social
Tube❄️Time

@ke8smq i figured as much. the part number on this IBM cleaning fluid looks too new to be used on the equipment i was looking at (late 70s era, not 80s or 90s)

1 March at 0:57 | Open on mastodon.social
Elton Carvalho

@tubetime maybe isopropyl is the bulk solvent but there may be other stuff in there. I've seen a mix of isopropyl and acetone sold as "electronics cleaning solution" before.

1 March at 0:56 | Open on bertha.social
Chuck

@tubetime I think the missing part of the puzzle might be IBM changing the formulation of their cleaning fluid. DEC had a similar thing when they switched from Carbon Tetrachloride to Isopropyl Alchohol. Not sure if that happened with IBM or not.

1 March at 1:00 | Open on chaos.social
Suburban Druid
Greg Lloyd
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