Portable dissolved oxygen (DO) meter provides accurate and reliable measurements of DO in beer. The flow-through meter, called Beverly, uses the manufacturer’s Optical VisiFerm DO sensor that offers a fast response time – down to parts-per-billion levels – and eliminates the need for polarization prior to use. With a small flow cell and minimal flow requirements, the meter is an economical choice for breweries of all sizes. It enables brewers to monitor DO during or after filtration and to check bright beer before bottling, thus ensuring purity and superior taste. Hamilton Company