Stainless Wort Aeration Carbonation Stone

Use this stainless steel stone to aerate chilled wort prior to fermentation or for carbonation after fermentation.

For aeration, after removing hot break out the bottom port once wort is chilled, simply sanitize the stone and bottom valve on the fermenter, then attach the stone and open the valve. Oxygen will pass through the 2 micron pores and diffuse into the wort.

Recommended aeration period is about 1 minute for 40L/10gal batches at a flow rate of about 1L/minute or 3psig. For larger tanks the duration should be longer. Gas flow meters can be installed inline that allow you to calculate the flow rate and can be purchased at the gas supply store along with a tank of O2 and regulator. Dissolved oxygen meters can also be purchased that can determine if the wort has reached the desired 8-10ppm of O2. 

For carbonation, attaching the stone to the racking arm is recommended, so as to not stir up the yeast that has settled along the sides of the tank. Ensure the rack arm ferrule and the stone are sanitized before connecting, and the ferrule can be purged with CO2 but holding the stone loosely over the ferrule before connecting it tight. 

Our 1/4" braided silicone hose can be used to connect to the hose barb, and a stainless hose clamp purchased to secure it.

Touching the stone is not recommended as oils can plug the tiny pores. The stone can be cleaned or sanitized by boiling in water. The stone fits to 1.5" tri-clamp ferrules and has a 1/4" hose barb.

Note: Some assembly required. Teflon plumbing tape should be snugly wrapped seven revolutions in a clockwise direction around the pipe thread on the stone, then the stone screwed into the coupling. If it still leaks when snugly tightened, a little food safe teflon pipe dope can be applied to the threads before wrapping with teflon tape.