Hydrometer test jar 250ml

Hydrometer test jar 250 ml – clear plastic measuring cylinder

Test jar, also called a measuring cylinder, for a hydrometer. It holds 250 ml, is 29 cm tall and 4.5 cm in diameter. The cylinder is made of extra clear plastic and is graduated in ml, so you can easily read the hydrometer and see how much sample you have taken.

How to use the test jar

• Sanitise the test jar and the hydrometer.
• Fill the jar with wort or beer and lower the hydrometer gently into it.
• Give the hydrometer a small spin to release air bubbles, and read where the liquid meets the scale.
• A standard hydrometer is read at 20 °C. Cool the sample to room temperature before measuring.

Technical data

• Volume: 250 ml
• Height: 29 cm
• Diameter: 4.5 cm
• Material: extra clear plastic
• Graduation: ml

Frequently asked questions about the hydrometer test jar

Will my hydrometer fit in the test jar?

The hydrometer must float freely without touching the bottom. Compare the length of your hydrometer with the height of the jar, 29 cm. For long hydrometers we also stock a 500 ml test jar that is 36 cm tall.

At what temperature should I measure?

A standard hydrometer is calibrated for 20 °C. Cool the sample to room temperature before taking the reading.

Can I pour the sample back into the fermenter?

It is not recommended, because the sample may have been contaminated. Taste it or discard it.

Related

• Measuring equipment and lab
• Hydrometer for beer, cider and wine – SG 0.980 to 1.110 – Alla France
• Hydrometer Final Gravity 1.000–1.030 – Alla France
• Hydrometer test jar 500 ml, height 36 cm
• Tips for better brewing efficiency