Many NOx sensors work by first removing oxygen and then breaking down the nitrogen oxides to provide a reading. However, the NexTech sensor eliminates the need to remove oxygen; the sensor material is engineered to have a strong NOx sensitivity even in the presence of oxygen.
Sour beers are probably the oldest style of brew in the world, but they're just starting to get popular in the States. They were all the buzz at this year's Great American Beer Festival. And with hundreds of brewers now dabbling in sours, it's easier than ever to find them at a local bar or grocery store.
While the first two warnings are trueâthe risks are real and homebrew shops have a fondness for limiting new brewers to American pale alesâ you don't actually need months to make a flawless, tasty sour beer. Meet the fast sour beer, which takes as much time to make as any pale ale or porter. Popularized as a technique largely through the site Milk the Funk, fast-souring. offers a revolution in homebrewing that makes stellar sour beer a practical reality to create in your kitchenâin just over a month.