Digital density meters are available as benchtop and handheld instruments. They use oscillation tube technology to very accurately measure the density of a sample in a short time. A hollow U-shaped glass tube is electronically excited to oscillate (or vibrate) at its characteristic frequency. This frequency changes when the tube is filled with the sample: the higher the mass of the sample, the lower the frequency. This frequency is measured and converted to density.
In addition, benchtop digital density meters use a built-in Peltier thermostat to control the temperature of the sample.
Portable Density Meters
Handheld Density Meters Densito and DensitoPro
Image Credit: Mettler-Toledo International Inc.
The lightweight Densito and DensitoPro fit comfortably in one hand for use in the lab or on the go. Results are temperature-compensated and can be delivered in a variety of formats, including specific gravity, Brix, and API units. Additionally, the DensitoPro comes with an integrated RFID and barcode reader, allowing for a simple point-and-shoot sample ID entry.
Technical Specifications
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Densito
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DensitoPro
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Material
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30330857
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30330858
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Density (g/cm3)
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Measuring range
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0.000 – 3.000
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Accuracy
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± 0.001
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Repeatability
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± 0.0005
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Resolution
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0.0001
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Temperature compensation
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Automatic or by using a user-defined temperature correction coefficient
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Measurement scales
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Density, Specific Gravity, Ethanol (Alcohol), Brix, API, Baumé, H2SO4, Plato, Proof (US and IP), user-defined concentration
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RFID and barcode reader
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No
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Yes
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Display
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2.4" color screen
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Weight
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355 g
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EasyPlus Density Meters
Density Meters Easy D30 and Easy D40
Image Credit: Mettler-Toledo International Inc.
EasyPlus Density Meters Easy D30 and Easy D40 offer everything needed for routine applications in a strikingly small footprint: fast measurements with automatic temperature control, small sample volumes and minimal operator dependency. These density meters are perfect for anyone, whether in the lab or on the production floor, thanks to their easy-to-use interface and compact yet durable design.
Technical Specifications
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Easy D30
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Easy D40
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Material
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30468670
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30468671
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Density (g/cm3)
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Measuring range
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0.000 – 3.000
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Accuracy
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± 0.001
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± 0.0005
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Repeatability
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± 0.0001
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± 0.00005
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Resolution
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0.001
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0.0001
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Temperature control
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Yes
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Temperature range (°C)
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15–25 (59–77 °F)
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15–50 (59–122 °F)
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Measurement scales
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Density and Specific Gravity
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Density, Specific Gravity, Ethanol, Sugar tables, API, Acid table, Urea, User-defined concentration
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Display/User interface
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4.3" display with color touchscreen with app-style user interface
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Excellence Density Meters
Density Meters D4, D5 and D6
Image Credit: Mettler-Toledo International Inc.
Developed for a wide range of applications, the intuitive Excellence Density Meters measure almost any sample. These instruments feature high accuracy and repeatability and can be further enhanced with automation and multiparameter solutions. Connection to the LabX™ PC software allows seamless processes and compliance with 21 CFR Part 11.
Technical Specifications
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D4
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D5
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D6
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Material
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30474900
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30474901
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30474902
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Density (g/cm3)
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Measuring range
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0.000 – 3.000
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Accuracy
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± 0.0001
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± 0.00005
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± 0.000005
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Repeatability
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± 0.00005
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± 0.000005
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±0.000001
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Resolution
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0.0001
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0.00001
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0.000001
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Temperature control
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Yes
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Temperature range (°C)
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0–95 (32–203 °F)
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Measurement scales
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Specific gravity, Twaddell, light and heavy Baumè, acid / base scales, chemicals, salt and others scales
Alcohol: OIML, AOAC, Proof Degree, HM C&E, Gay Lussac
Sugar: Plato, Brix (Emmerich, NBS 113), HFCS 42/55, Invert Sugar, KMW, Oechsle, Babo
Petro: API degrees and gravity tables for crude oils, refined products and lubricants
Up to 30 user-defined concentration tables (can be entered as tables or formulas)
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Display/User interface
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7" display with color touchscreen with One ClickTM user interface
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PC software
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LabX® PC software
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Automation
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InMotion PX autosamplers
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