Urine Hydrometer

Code

Jolles-type urinometer, calibrated at 20 °C with a range of 1,000–1,060 kg/m³ with 1-unit divisions
Compact and reliable instrument for clinical analysis, designed to measure the specific gravity of urine accurately.
Made of glass, with a total length of 145 mm.

€13.58 tax incl.
€11.22 Tax excl.
Spain 21% VAT; The final tax applicable may vary according to the country of destination.

Urine Hydrometer for Clinical Analysis

The urine hydrometer, also known as a urinometer, is an instrument used to measure the relative density or specific gravity of urine. This measurement is essential in clinical laboratories to assess the kidney’s ability to concentrate and dilute urine, and to detect potential imbalances in the body’s hydration status.

The standard model features a scale from 1,000 to 1,060 kg/m³ with 1-unit divisions, calibrated at 20 °C. It is made of glass and has a total length of 145 mm. Its simple, reagent-free use makes it a practical choice for routine analysis.

The hydrometer operates on the principle of flotation: the instrument is placed vertically into a cylinder containing a sufficient volume of liquid sample. The depth of immersion varies depending on the density of the liquid, and the reading is taken at the point where the liquid surface intersects the scale on the stem. For reliable results, the sample must be bubble-free and at a stable temperature. If the temperature differs from 20 °C, the appropriate correction must be applied using standard compensation tables. Our catalogue includes ungraduated glass cylinders specifically designed for use with hydrometers, alcoholmeters, and aerometers.

In addition to traditional hydrometers, alternative methods exist for measuring urine density. Among them, refractometers allow readings using just a single drop of sample, based on the liquid’s refractive index. Our catalogue includes a handheld clinical refractometer with automatic temperature compensation (ATC), reference 720.3120, specifically designed for medical applications. This model features three integrated scales: serum proteins, urine specific gravity, and refractive index. A versatile and precise tool for healthcare professionals and diagnostic laboratories.

Jolles-Type Urinometer – Specifications
Model Range Graduation Length Reference
Jolles urinometer 1.000–1.060 kg/m³ 1 kg/m³ 145 mm 407.001

Data sheet

Product Type
Specific Use Hydrometer
Application
Orina
Scala Density SG
1,000-1,060 kg/m³
Accuracy Min. Div. SG
1 kg/m³
Calibration
Calibrated at 20 °C with distilled water (without certificate)
Category
Hydrometers / Aerometers
    Asked by: jose
    Date: 2025-09-01 08:36:33
    Hello, good morning. I would like to find out the Baumé degrees of a liquid (calcium polysulphide). Which aerometer would you recommend, and could you explain how it works? Thank yo

    Good morning:
    In response to your enquiry, we need to know the Baumé scale of this chemical product. Once confirmed, we will be able to indicate the correct reference you should purchase together with the glass measuring cylinder, which is 524.017.

    To use a hydrometer (aerometer for liquids) in a cylinder:

    1. Prepare the materials:
      • Clean the glass cylinder and rinse it with a small amount of the liquid to be measured to avoid contamination.
      • Select a hydrometer suitable for the expected density; if it sinks too much, it is not the correct range.
    2. Fill the cylinder:
      • Pour the liquid into the cylinder without overfilling it, avoiding overflow when inserting the hydrometer.
      • Ensure the product temperature is correct; otherwise, use equivalence tables.
    3. Insert the hydrometer:
      • Hold it from the top and gently introduce it into the liquid.
      • Spin it slightly with your fingers so it does not stick to the cylinder walls and can float freely.
    4. Allow stabilisation:
      • Let the hydrometer float freely and vertically without touching the bottom or the sides of the cylinder.
    5. Take the reading:
      • Position your eyes at the liquid level and observe the graduated scale.
      • Read at the bottom of the meniscus (the curve formed by the liquid surface). This point on the scale corresponds to the relative density of the liquid.

    Is this answer helpful to you? Valoration: 491 / 1

    Asked by: Hugo
    Date: 2025-09-03 22:59:17
    I need a device to measure the alcohol content of grapes. What would you recommend? Thank you.

    Which instrument is used to measure grape must?

    Grapes do not have "degrees" per se; what is measured is the sugar content in the must, which helps estimate probable alcohol content. We recommend two instruments:

    • Handheld refractometer with 3 scales – Ref. 720.5150
      View product
      Measures °Brix, Baumé and probable alcohol. Requires only 2–3 drops.
    • Mustimeter (glass hydrometer) with 2 scales – Ref. 414.
      View product
      Used with a 250 ml glass cylinder.
      Recommended cylinder

    Both options are reliable, but the refractometer is more practical and faster.


    Is this answer helpful to you? Valoration: 446 / 1