Little Big Mouth - Hydrometer

[chertel]

I will suggest getting the sampling tube.

@Wenceslas

do I need a sampling tube for the hydrometer or could I just pop the hydrometer through the bunghole on the lid of the little big mouth (emphasis added) ?

Given this equipment list from Northern Brewer:

• Little Big Mouth Bubbler®
• Brewery Essentials Gravity Testing Kit

a 9" hydrometer doesn’t float in the 5" of wort (one gallon) that’s in the Little Big Mouth Bubbler.

Over in the “Hydrometers and Lost Beer” topic (link), I noted:

@chertel

• If you are looking moving to 5 gallon brewing after you get comfortable with the process, don’t be concerned about losing that extra bottle. Focus on developing good brewing habits while brewing one gallon batches by taking the SG readings.

• If you are planning to stay with one gallon batches for a while, and you are fermenting in a 1 gallon carboy, get something bigger (a Little Big Mouth Bubbler®, a two gallon food grade pail, …).

• With a fermenter that actually works for one gallon batches (see above), add your wort and top off to the one gallon level in the fermenter, then add an additional cup (8 oz) of water. This will dilute the wort slightly, so you will want to fine-tune this amount (or adjust the recipe) over time. A typicaly SG reading will take 4 oz. You can follow what flars suggests above (link) to minimize the amount of wort used to take a reading.

In summary: a one gallon recipe yields 10 bottles of beer with three SG measurements.