Re: Air filters for big 500 series scopes


Roy Thistle
 

On Sun, Oct 18, 2020 at 11:56 PM, snapdiode wrote:


Scrubbing Bubbles
It doesn't use phosphates (which are not good for the environment)... but might not clean these old scope filters as well as a phosphate cleaner. Instead of phosphates, Scrub Bub uses a surfactant, combined with a water softener. Scrub Bub seems safer, for the aluminum filter, and for the user too.

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