Green Line Environmentally Friendly Test Equipment
When you throw away an unused or broken hydrometer, you are throwing away lead. That's what the small beads at the bottom are made of. When you throw away an unused or broken thermometer, you may be throwing away mercury. Our Green Line test equipment uses steel shot for bottom weights and non-toxic food grade riser liquid in the thermometers. Help reduce toxins in the environment by buying Green Line.

Our best unit for measuring the gravity of your beer or wine. This combination hydrometer and thermometer allows you to make accurate specific gravity readings by correcting for the temperature of the liquid you are testing. This is very important because gravity varies with temperature. Constructed with stainless steel weights and food grade riser fluid. We recommend using this with a test jar, sold below.