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Hydrometers & Refractometers

Hydrometers and Refractometers for Fermentation Gravity Testing

Hydrometers and refractometers help brewers and fermentation makers measure gravity, estimate fermentable sugar, track fermentation progress, and make better decisions before packaging. Gravity readings are useful for beer, wine, cider, mead, sake, hard seltzer, kombucha, and many other small-batch beverages.

Hydrometers measure density in a sample, while refractometers use a small sample to estimate sugar concentration. Each tool has its own strengths and correction needs, especially once alcohol is present. Use the product instructions and a consistent sampling method so readings are meaningful from batch to batch.

Common gravity testing uses

  • Original gravity: check the starting strength of wort, must, juice, or other fermentable bases.
  • Fermentation progress: compare readings over time to see whether gravity is still changing.
  • Final gravity: confirm stability before packaging, backsweetening, or conditioning.
  • Recipe records: use consistent readings to improve repeat batches and troubleshooting.

For related tools, browse pH measurement tools, ABV calculator, keg carbonation calculator, and brewing equipment.

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Triple scale hydrometer for measuring specific gravity, Brix, and potential alcohol in beer, wine, cider, and mead.
$6.49 - $6.49
$6.49
$6.49 - $6.49
$6.49

Triple Scale Hydrometer – Specific Gravity, Brix & Potential Alcohol (9")

SoCal Brewing Supply
8 in stock

Accurate Gravity Readings for Better Brewing Results This Triple Scale Hydrometer is a must-have tool for homebrewers, winemakers, and cider makers...

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$6.49 - $6.49
$6.49
$6.49 - $6.49
$6.49
Graduated cylinder used to float a hydrometer, 12 inch plastic test jar.
$7.49 - $7.49
$7.49
$7.49 - $7.49
$7.49

Hydrometer Testing Jar - 12" Tall with Screw-In Base

The Vintage Shop
15 in stock

Hydrometer Testing Jar – 12" Tall with Screw-In Base Sturdy, Tall Testing Jar for Accurate Hydrometer Readings This 12-inch tall Hydrometer Testing...

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$7.49 - $7.49
$7.49
$7.49 - $7.49
$7.49
Brix and specific gravity refractometer for checking wort, must, and fermentation sugar levels.
$44.99 - $44.99
$44.99
$44.99 - $44.99
$44.99

Refractometer in Brix & Specific Gravity Scales

SoCal Brewing Supply
Only 1 left!

Brewing Refractometer with Brix and Specific Gravity Scales A brewing refractometer lets you check sugar concentration with only a few drops of wor...

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$44.99 - $44.99
$44.99
$44.99 - $44.99
$44.99
Red TILT Pro wireless hydrometer and thermometer for fermentation gravity and temperature tracking.
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

TILT® Pro Wireless Hydrometer and Thermometer - Red

TILT
Only 1 left!

TILT Pro Wireless Hydrometer and Thermometer - Red The TILT Pro wireless hydrometer and thermometer is built for craft-scale stainless fermentation...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
KegLand Saber LED Refractometer – Water-Resistant, Rechargeable (Brix & SG) at SoCal Brewing Supply
$54.99 - $54.99
$54.99
$54.99 - $54.99
$54.99

KegLand Saber LED Refractometer – Water-Resistant, Rechargeable (Brix & SG)

Kegland
2 in stock

Fast Gravity Readings with LED Illumination and Built-In ATC The KegLand Saber Refractometer is a durable, easy-to-use tool for quick gravity check...

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$54.99 - $54.99
$54.99
$54.99 - $54.99
$54.99
Tilt Hydrometers | Standard Model (Original) at SoCal Brewing Supply
Tilt Hydrometers | Standard Model (Original) at SoCal Brewing Supply
$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00

Tilt Hydrometers | Standard Model (Original)

TILT
2 in stock

Tilt Hydrometers : Standard Model (Original) Revolutionize Fermentation Monitoring with Precision and Connectivity Take your brewing to the next le...

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$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00
EasyDens by Anton Paar | Lab Grade Hydrometer at SoCal Brewing Supply
Save 8% Save %
$599.99
$599.99 - $599.99
$599.99
$549.99
$549.99 - $549.99
$549.99

EasyDens by Anton Paar | Lab Grade Hydrometer

Anton Paar
Only 1 left!

Take Control of Your Fermentation with EasyDens by Anton Paar The Precision Tool for Brewers, Distillers, and Winemakers The EasyDens by Anton Paar...

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$599.99
$599.99 - $599.99
$599.99
$549.99
$549.99 - $549.99
$549.99
Save 8% Save %
Wine Thief in its Packaging
The Thief - Precision Wine & Beer Sampler at SoCal Brewing Supply
$13.99 - $13.99
$13.99
$13.99 - $13.99
$13.99

The Thief - Precision Wine & Beer Sampler

Fermtech
Only 1 left!

Easily Take Samples Without Waste The Thief is a must-have tool for winemakers and brewers, designed for effortless sample collection and hydrome...

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$13.99 - $13.99
$13.99
$13.99 - $13.99
$13.99
Specific purpose built hydrometer, known as an Alcoholmeter, intended to measure the Proof & Tralle of distilled Spirits.
$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99

Proof & Tralle Hydrometer for Distilled Spirits - Alcoholmeter

SoCal Brewing Supply
2 in stock

Proof & Tralle Hydrometer – Accurate Spirit Alcohol Readings Measure Alcohol Content in Distilled Spirits with Precision This specialized Proof...

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$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99
Hydrometer Bundle at SoCal Brewing Supply
$12.99 - $12.99
$12.99
$12.99 - $12.99
$12.99

Hydrometer Bundle

SoCal Brewing Supply
8 in stock

Hydrometer Bundle for Beer, Wine, Cider & Mead This hydrometer bundle gives homebrewers and winemakers the basic tools needed to measure origin...

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$12.99 - $12.99
$12.99
$12.99 - $12.99
$12.99
Anton Paar SmartRef digital refractometer next to a sample cell phone running the connective software.
$359.00 - $359.00
$359.00
$359.00 - $359.00
$359.00

Anton Paar SmartRef Digital Refractometer

Anton Paar
Only 1 left!

Anton Paar SmartRef Digital Refractometer | Portable Smart Pocket Brix & Plato Meter Smart, Accurate, and App-Connected Refractometer for Homeb...

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$359.00 - $359.00
$359.00
$359.00 - $359.00
$359.00
Stainless Steel 18" Turkey Baster style Wine Thief for sampling wine, demonstration of how to use.
Stainless Steel 18" Turkey Baster style Wine Thief for sampling wine, beer, cider, and meads.
$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99

Stainless Steel Wine Thief – 18" Bulb-Style Sampler

SoCal Brewing Supply
2 in stock

Stainless Steel Wine Thief – 18" Bulb-Style Sampler Quick, clean samples for wine, beer, and cider This stainless steel, “turkey baster” style wine...

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$9.99 - $9.99
$9.99
$9.99 - $9.99
$9.99