Fed up with breaking your glass hydrometer often. Well this simple trick can save you a lot of money. For more detailed instructions on how to measure alcohol and sugar levels using a hydrometer, read this.

unbreakable hydrometer
5 from 1 vote

Unbreakable hydrometer DIY

low cost unbreakable hydrometer to measure BRIX, specific gravity and alcohol concentration
Prep Time10 mins
Active Time5 mins
Total Time15 mins
Course: density measurement
Cuisine: home brew
Keyword: alcohol measurement, DIY projects, hydrometer, triple scale
Yield: 1 hydrometer
Cost: 20


  • ruler/scale
  • tall glass or large bottle
  • permanent marker


  • 1 piece syringe
  • 1 tbsp sand or similar weight don't use iron ball bearings as they will rust and gain weight
  • 1 piece tape for sealing and making sure that the brix markings
  • 100 ml distilled or RO water 0 BRIX or 1.0 specific gravity reading
  • 100 ml water dissolved with 10gm of sugar 10 BRIX reference solution


  • Take the plunger out of the syringe, add the straw, fill the syringe with 1/3 sand and seal the whole setup
    unbreakable hydrometer
  • Put it in distilled water and mark the water level as 0 BRIX
  • Put it in 10 BRIX solution and mark it as 10 BRIX
  • Using a scale extend the scale to mark 5, 10, 15, and 20 brix
  • Cover all markings with tape so that it does not get smeared. and your hydrometer is ready


this simple hydrometer is fairly accurate and gives you an indication of the level of fermentation and when it is time to move to secondary and bottling.

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21 years of experience in Home Brewing and author of Arishtam (India's first homebrew Guide Book).

This Post Has One Comment

  1. Ankur

    5 stars

    simple yet effective DIY project for home brewers

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