An Oxygen Flow Meter with Duotight 8mm fittings - 0.1-1.5L/min. This flow control device is designed to be used with an oxygen cylinder and regulator that can be purchased separately.
Attach the regulator to to the top of your oxygen cylinder. Turn pressure up to 1-10psi. Immerse diffusion stone in wort for 1-2 minutes. Then dial the flow meter up to 1.0L/min. The time it takes to saturate will depend on volume, temperature, depth of vessel, and type of stone (0.5mm recommended). NOTE: Wort must be cold. It is extremely difficult to get oxygen to dissolve into hot wort so it's essential to cool wort completely before starting this process.
Type: Pure Oxygen Air Flow Meter
Thread type: MFL
Connector Pieces: FFL x 8mm Duotight push fit
Body material: PMMA
Float material: Agate ball
O-ring material: Silicone
Measure range: 0.1-1.5L