Which type of homebrewer is best for 8 ppm of dissolved oxygen in solution?(a) Siphon sprays(b) Whipping(c) Splashing and shaking(d) Pure air through a stone with an aquarium pumpI got this question by my school teacher while I was bunking the class.This intriguing question comes from Estimating Oxygen Solubility topic in chapter Mass Transfer of Bioprocess Engineering

Which type of homebrewer is best for 8 ppm of dissolved oxygen in solu

1.	Which type of homebrewer is best for 8 ppm of dissolved oxygen in solution?(a) Siphon sprays(b) Whipping(c) Splashing and shaking(d) Pure air through a stone with an aquarium pumpI got this question by my school teacher while I was bunking the class.This intriguing question comes from Estimating Oxygen Solubility topic in chapter Mass Transfer of Bioprocess Engineering
Answer» The correct answer is (c) Splashing and shaking For explanation: Homebrewers have several aeration/oxygenation methods available to them: siphon sprays, whipping, splashing, shaking, pumping air through a stone with an aquarium pump, and injecting pure oxygen through a sintered stone. Pumping compressed air through a stone is not an efficient WAY to provide adequate levels of DO. Traditional splashing and shaking, although LABORIOUS, is fairly efficient at dissolving up to 8 ppm oxygen. To increase levels of oxygen, the CARBOY HEADSPACE can be purged with pure oxygen prior to shaking.

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