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UBREW USA · Gravity & sampling

Fermtech Deluxe Thief, Triple-Scale Hydrometer and Brush Kit

A sampling-and-testing set that lets the Fermtech Thief hold the sample for a supplied floating hydrometer, with a cleaning brush.

Price & purchase ↓

The equipment in use

How this item fits your brewing setup

This kit combines three roles: drawing a sample, holding it for a gravity reading and brushing the sampling tube afterward. The Fermtech Thief can accept the supplied hydrometer directly, so a separate test jar is not required for that arrangement. Choose it when you want those functions together rather than assembling a sampler, jar and meter separately.

The selected offer specifies specific gravity from 0.990 to 1.170, Brix/Balling from 0 to 35 and potential alcohol from 0% to 20%. Specific gravity describes sample density; the potential-alcohol scale is a brewing reference, not a direct reading of the drink’s final alcohol strength. Keep initial and later readings if you intend to estimate alcohol content.

Fermtech’s instructions have you hold the Thief vertically and let the hydrometer float without clinging to the side or carrying bubbles. The photographed hydrometer is marked 60/60°F. Use the actual meter’s calibration instructions for temperature corrections; the sampler’s heat limit is a separate specification.

For the acrylic Thief, Fermtech specifies a non-alcohol-based sanitizer and a maximum of 120°F/ 49°C. That limit does not establish a hot-liquid rating for the whole kit. The offer also includes a 19 in Thief brush. If you already own a suitable meter and brush, compare the standalone Thief instead of buying the set again.

The selected reference

Specifications & supplied details

Supplied instrument
One triple-scale hydrometer
Sampling component
Fermtech Thief
Cleaning component
19 in Thief brush
Declared specific-gravity scale
0.990–1.170
Declared Brix/Balling scale
0–35
Declared potential-alcohol scale
0–20%
Photographed meter marking
Sp. Gr.60/60°F
Thief body material
Acrylic, maker specification
Thief maximum temperature
120°F/ 49°C, sampler only
Listed kit weight
5.1 oz

Before and during use

Advice for this reference

Before you choose

Choose the combined sampler/test-holder arrangement if you want to avoid a separate jar for this measurement.

Also check

Keep instrument calibration temperature separate from the acrylic sampler’s maximum temperature.

Documented use & care

For the Thief, the maker specifies rinsing/sanitizing with a non-alcohol-based sanitizer and no more than 120°F/ 49°C.

Avoid excessive force on the Thief’s release pin, as Fermtech instructs.

Connections & scope

Fit and useful limits

  • No direct final-ABV reading, guaranteed bottling-readiness decision or numerical accuracy tolerance is established.
  • The sampler temperature limit is not a heat rating for the glass hydrometer or brush.
  • No independent lead/BPA certification or different tool quantity is inferred from plural marketing wording.

Questions about this product

What else should you know?

Can I use the sample holder without its hydrometer?

The Thief draws and holds liquid, but does not measure gravity by itself. A compatible floating hydrometer provides the reading.

Should I also order the standalone Fermtech Thief?

The kit already includes that sampling role. Compare the standalone part when you need a replacement or already have the other testing equipment.

Is a potential-alcohol reading the alcohol currently in the sample?

No. It is a brewing reference scale. Estimating final alcohol content requires appropriate initial and later readings, not a single potential-alcohol number.

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