Yeast starter aerator

[Mickey Lane]

I took an old CPAP machine and cranked the pressure up to max. Used an O2 hose fitting (aka injector) on the large hose outlet and a length of O2 hose to the yeast starter bottles. Used StarSan to clean the hose. It's a little weird because the CPAP thinks the patient is having a fit so the pressure comes and goes but it gets the job done. Lots of bubbles.

 

[RPh_Guy]

FYI you can buy a quiet air pump + tubing for less than $10.

It needs to have a HEPA filter to prevent it from adding contaminants to the starter.

 

[Mickey Lane]

The CPAP has a good filter and as they are quite expensive, I would never suggest anyone spend even a nickle on this set up. I mentioned it only because I had one in a bottom drawer doing nothing and it serves the purpose well.