Description
Density hydrometer, type 21, is a precision glass instrument for determining liquid density in the range 1,900–1,960 g/cm³ with a fine scale division of 0,001 g/cm³. Measuring 160 mm in length and referenced to 20 °C, it supports consistent density determination under standard laboratory temperature conditions. The hydrometer is supplied without an integrated thermometer and uses bottom scale reading, so the meniscus is evaluated from below during immersion. This type 21 model from manufacturer Amarell is suited to laboratory and process settings that require a narrow high-density window with 0,001 g/cm³ resolution. Typical tasks include quality control, material characterisation and comparative density checks on denser liquids where a compact 160 mm instrument is convenient. Available as a single piece, it can complete a multi-range hydrometer set or serve as a dedicated instrument for the 1,900–1,960 g/cm³ interval. Clear graduation across the stated range allows straightforward visual readout without on-stem temperature indication.
This article is part of Hydrometers, in Density & viscosity measurement.
Key features
- Pack size: 1 pc
- Type: 21
- Measuring range: 1,900–1,960 g/cm³
- Scale division: 0,001 g/cm³
- Length: 160 mm
- Reference temperature: 20 °C
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Questions about Density hydrometer, type 21, 1,900-1,960:0,001g/cm³, 160mm long, reference
What is this article?
Density hydrometer, type 21, 1,900-1,960:0,001g/cm³, 160mm long, reference is the article on this page. Luminix Health distributes Amarell for laboratory use. It sits in Hydrometers, inside Density & viscosity measurement, in Lab instruments.
A hydrometer floats in a liquid and the stem reading is the density or a related scale such as Brix. The liquid has to be at the temperature printed on the stem, or a correction is required. A chip on the stem changes the reading. One hydrometer does not cover every density.
Density is mass divided by volume. A hydrometer floats at a depth that depends on the density of the liquid. A pycnometer is a vessel of known volume that is weighed full. Viscosity is the resistance to flow. A capillary viscometer times how long a volume takes to fall through a tube. Both measurements need a stated temperature, because liquids change density and viscosity as they warm. The units trace to the BIPM and to NIST.
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The category is Density & viscosity measurement. The sub-category is Hydrometers. The catalogue is Lab instruments.
Shelves beside this one are Viscometers and Density meters & pycnometers.
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