Circrane Hydrometer & Glass Test Jar Set Triple Scale Alcohol Hydrometer Review (2026)

Who this kit is built for

Circrane markets this hydrometer and jar set to brewers and winemakers who want everything needed for a gravity reading in one box, rather than buying the instrument and a jar separately. The triple scale hydrometer reads specific gravity, Brix and potential alcohol by volume, so it covers beer, wine, mead and kombucha with a single tool. Anyone setting up a first home brewing or winemaking station benefits from getting a matched hydrometer and jar pair instead of guessing at compatible sizes. Because the set is priced for value, it also suits brewers who want a spare kit for a second fermenter or a backup in case their primary hydrometer breaks partway through a busy brewing season.

Specs and what is in the box

The hydrometer scale covers specific gravity from about 0.990 to 1.170, Brix or Balling from 0 to 35, and potential alcohol by volume from 0 to 20 percent, and the glass and printed markings are free of mercury, lead and other hazardous materials. The set includes the triple scale hydrometer, a clear glass cylinder test jar, a stainless steel handled bottle brush, a sturdy storage case to protect the hydrometer from breakage, an instruction sheet with a scale conversion chart, and a microfiber cleaning cloth. The jar is made from borosilicate glass, which holds up to sanitizing and cleaning better than standard glass and tolerates a wider range of sudden temperature changes without cracking, a useful trait when moving between a warm wort and a cold rinse.

Living with the kit day to day

In use, fill the narrow glass jar with your sample, which needs only around 125 milliliters rather than the 250 milliliters many older plastic jars require, then float the hydrometer and read the scale where it meets the liquid. The narrow, tall shape of the jar is meant to make the meniscus easier to spot for a more accurate reading. After each use, the included brush makes it easier to clean the inside of the tall, narrow jar than a standard bottle brush would. Circrane backs the set with a manufacturer quality assurance covering up to a year from purchase, which is reassuring for a kit built mostly from glass parts that see regular handling near hot liquid and cleaning chemicals.

Where it gives up ground to rivals

Circrane does not list a dedicated protective case for storing the glass jar itself, only the hydrometer, so the jar is more exposed to chips and cracks than in kits that box both pieces. It also still requires a meaningful sample volume to float the hydrometer properly, more than some smaller sample designs on the market use. Against the SOLIGT Triple Scale Hydrometer and Glass Test Jar, the two sets are close in accessories and price, with SOLIGT's jar pitched at a similarly small sample size. The Brewer's Elite Hydrometer and Plastic Test Jar Deluxe set trades the glass jar for plastic and adds a hard case and cloth pouch, which some brewers will prefer for durability over the clarity Circrane's glass offers.

Verdict and better fits for other brewers

This is a dependable, accurately scaled hydrometer and jar combo for brewers who want borosilicate glass durability without paying for a premium lab instrument. The triple scale and included accessories make it a complete starter kit rather than a bare hydrometer that needs a separately purchased jar. Brewers who travel frequently with their gear, or who have broken glass jars in the past, may prefer a plastic-jar kit with a hard case, such as the Brewer's Elite set, for extra peace of mind. For a home setup that stays on a shelf between brew days, the Circrane set's clarity, borosilicate durability and included cleaning tools make it a solid, well-rounded choice.

Frequently asked questions