Read your hydrometer accurately every time — this test jar gives your hydrometer enough depth to float freely without touching the sides.
This plastic hydrometer test jar is an essential companion to any floating hydrometer. It provides the correct depth and diameter for your hydrometer to float freely, allowing an accurate specific gravity reading without the jar walls skewing the result. The wide, stable base prevents tipping, and the clear plastic lets you read the meniscus clearly. Works with all standard floating hydrometers.
- Clear food-grade plastic
- Wide, stable base
- Suitable for all standard floating hydrometers
- Easy to clean and sanitize
Winemaker's Tip: Hold the test jar at eye level and read the specific gravity at the bottom of the meniscus (the curved surface of the liquid) — reading from above or below will give an inaccurate result.
Pair with our Triple-Scale Hydrometer for complete specific gravity, potential alcohol, and Brix readings.