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Some hardware stores also sell 99% IPA. For electronics I find 91% or higher has the best cleaning action.
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Doug ---------- Original Message ---------- From: "Dave Daniel via groups.io" <kc0wjn@...> To: [email protected] Subject: Re: [HP-Agilent-Keysight-equipment] IPA type for 3.5mm connector cleaning Date: Sun, 16 Feb 2025 17:36:23 -0500 AFAIK, the difference between IPA solutions of different concentrations is the amount of water in them. IPA is naturally hydroscopic and will absorb water over time. For lab purposes, I use the highest concentration that I can find in the local stores, which is usually 99% IPA.
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I've actually been wondering if there is an easy method to determine the concentration of water in IPA solutions, since I assume that 99% IPA becomes less concentrated as it is exposed to the atmosphere over time. Perhaps specific gravity measurement.
DaveD
KC0WJN ?
On Sun, Feb 16, 2025 at 16:49 Calvin Guan via <guancalvin=[email protected]> wrote:
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