The Coopers DIY Beer Hydrometer is a durable and precise tool designed specifically for home brewers to monitor the progress of fermentation. It measures the specific gravity (SG) of your brew, allowing you to track fermentation and calculate the alcohol content. This hydrometer is crafted from high-quality food-grade plastic, making it more resistant to breakage than traditional glass models. Its easy-to-read scale simplifies the process for brewers, even in lower light conditions. The Coopers hydrometer is not dishwasher safe, so it requires careful hand cleaning after use.