Y'All Want a Single Y'All Want a Single "Y'All Want a Single" is a song written and recorded by American nu metal band Korn for their sixth studio album, "Take a Look in the Mirror". It was released as the album's third single in March 2004, chosen by fans through a poll on the band's official forum. At a running time of three minutes and seventeen seconds, the song contains 89 uses of the word "fuck" with the repeated line "Y'all want a single, say fuck that - fuck that fuck that", although the radio edit replaces the word "fuck" with "suck". "Y'All Want
Single-use bioreactor and other metrics needed to improve yields and product efficacy. New perfusion devices are also becoming popular for certain cell culture applications. Environmental aspects for single-use bioreactors are important to consider due to the amount of disposable material used compared with conventional bioreactors. A complete life cycle assessment comparing single-use bioreactors and conventional bioreactors does not exist, but many ecological reasons are supporting the concept of single-use bioreactors. For a complete life cycle assessment not only the manufacturing, but also the repeated use need to be considered. Even the main part of a single-use bioreactor is not a disposable, but