Re: 91% Isopropyl Rubbing Alcohol to clean potentiometers?

Chuck Harris <cfharris@...>

Metal can, or plastic bottle?

-Chuck Harris

Dennis Tillman W7PF wrote:

Hi Wilson,

Ace Hardware, a US Hardware Store Franchise, and TrueValue Hardware Stores (another US Franchise) sell 99% IPA by the gallon for $20. I have not found it cheaper anywhere, and you can't beat the convenience of getting it anytime you want it at the local hardware store.

Dennis Tillman W7PF

-----Original Message-----
From: Bill Carns
Sent: Tuesday, March 05, 2019 5:28 PM

If you go to a pharmacy and talk with the Pharmacist, they can give you IPA
with a higher percent IPA and less water. This is better for pots, but be
careful to not saturate. Sometimes you can damage the carbon resistance
layer that is laid down for the wiper to run on. I am not sure if that is
true for the ones TEK uses.


-----Original Message-----
Sent: Tuesday, March 05, 2019 7:13 PM

I have some 91% Isopropyl Rubbing Alcohol sitting around and I have a Tek 577
with dirty horizontal and vertical display controls, I have used this to
clean residue on circuit boards and grime off surfaces and it works quite
well so I was wondering if it could be used to clean the dirty potentiometers
on the 577 curve tracer. 91% seems the best the best I can find. I also have
a can CRC Lectra Clean. What are your thoughts, recommendations? Thanks

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