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.
[ Photograph: Liam Boylan ]. Sour mix is a combination of sugar, water, lemons, and limes. One batch could give you a whole party's worth of margaritas, whiskey sours, or daiquiris without much effort. A bottle of sour mix may call to you from the store shelf with a siren song of good times and an easy-pour spout. Don't be fooled.