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Type-Approved Density Meter:
DMA

  • Anton Paar DMA 501 and DMA 1001 density meters side by side, each with a syringe and sample beaker, displaying measurement interfaces.
  • Two lab technicians in a laboratory reviewing Anton Paar-branded folders, with reagent bottles and lab glassware on the bench.
  • A lab technician prepares a sample next to an Anton Paar DMA 4500 M density meter with Xsample 530 sample changer and label printer.
  • Two lab technicians use Anton Paar’s AP Connect software at desktop stations, with a DMA 4500 M density meter visible in the background.
  • A gloved hand operates the touchscreen of an Anton Paar DMA 4500 M density meter with Xsample 530 sample changer in a lab setup.
  • Anton Paar DMA 501 and DMA 1001 density meters side by side, each with a syringe and sample beaker, displaying measurement interfaces.
  • Two lab technicians in a laboratory reviewing Anton Paar-branded folders, with reagent bottles and lab glassware on the bench.
  • A lab technician prepares a sample next to an Anton Paar DMA 4500 M density meter with Xsample 530 sample changer and label printer.
  • +2
Model:
  • Type-approved three-digit density meter for quick at-line quality checks
  • Legally compliant results with minimal sample volume
  • Flexible filling options for effortless, reliable handling
  • Seamless AP Connect integration for secure, traceable data
  • U-View, FillingCheck, U-Pulse for error-free precision

Anton Paar’s type-approved density and concentration meters deliver legally compliant results wherever measurements need to stand up to official inspection. Designed for regulated industries, they combine decades of application expertise with outstanding precision, automation, and connectivity. From incoming goods to final quality release, you obtain traceable, auditable data in a single, highly efficient workflow – ready for legal-for-trade use and your digital laboratory.

Key features

Type-approved accuracy for legal metrology

Rely on density and concentration results that are ready for authorities, auditors, and customers. The DMA EZ series is type-approved and designed specifically for legal metrology, so your measurements achieve official calibration and verification. Combined with Anton Paar’s decades of know-how, this secures full confidence in product release decisions and simplifies compliance with national and international standards.

Two lab technicians in a laboratory reviewing Anton Paar-branded folders, with reagent bottles and lab glassware on the bench.

Combine for a comprehensive measurement system

Create exactly the measuring system you need today and expand it tomorrow. By combining DMA 4101 EZ, 4501 EZ, and 5001 EZ with various Anton Paar measuring modules, you determine all relevant parameters – such as density, concentration, and more – in a single measurement run. This modularity reduces sample handling, minimizes operator influence, and shortens overall analysis time, while ensuring a consistent, harmonized workflow across different products, methods, and laboratory locations.

A lab technician prepares a sample next to an Anton Paar DMA 4500 M density meter with Xsample 530 sample changer and label printer.

Automation and digital connectivity

Boost throughput and reduce manual steps with automated sample changers that handle filling, cleaning, and measurement sequences. This improves safety and frees your team to focus on higher-value tasks. Direct integration into the AP Connect lab execution system brings all results into one digital platform, enabling paperless documentation, easy tracking of legal-for-trade measurements, and seamless data transfer to LIMS or ERP systems for end-to-end compliance.

Two lab technicians use Anton Paar’s AP Connect software at desktop stations, with a DMA 4500 M density meter visible in the background.

U-View and FillingCheck: Error-free measurements

See what’s happening inside the measuring cell – in real time. U-View provides a zoomable live image so operators can visually verify every filling, while FillingCheck automatically detects microbubbles or improper filling conditions. Together they significantly reduce measurement errors and rework, enabling secure, traceable results even with challenging or opaque samples, and giving operators immediate feedback that supports robust, standardized routines.

A gloved hand operates the touchscreen of an Anton Paar DMA 4500 M density meter with Xsample 530 sample changer in a lab setup.

Specifications

 DMA 501 EZDMA 1001 EZDMA 4101 EZDMA 4501 EZDMA 5001 EZ
PatentsEP3012612B1, AT520632B1, US10145771B2AT 516420 B1
Measuring range
Density 0.6 g/cm³ to 2 g/cm³
Temperature15 °C to 40 °C (59 °F to 104 °F)15 °C to 60 °C (59 °F to 140 °F)15 °C to 70 °C (59 °F to 158 °F)
Pressureambient pressure
Accuracy*
Density0.001 g/cm³0.0005 g/cm³ (0.6 g/cm³ to 1.5 g/cm³)
0.001 g/cm³ (1.5 g/cm³ to 2.0 g/cm³)
0.0005 g/cm³0.0002 g/cm³0.0001 g/cm³
Temperature0.3 °C (0.5 °F)0.03 °C (0.05 °F)**0.02 °C (0.04 °F)0.015 °C (0.03 °F)0.01 °C (0.02 °F)
Repeatability, s.d.***
Density0.0002 g/cm³0.00005 g/cm³0.00005 g/cm³0.00005 g/cm³0.000005 g/cm³
Temperature0.1 °C (0.2 °F)0.02 °C (0.04 °F)0.02 °C (0.04 °F)0.015 °C (0.03 °F)0.01 °C (0.02 °F)
Reproducibility, s.d.***
Density0.0004 g/cm³0.00007 g/cm³0.00005 g/cm³0.000005 g/cm³0.000005 g/cm³
Digital Resolution
Temperature0.01 °C (0.01 °F)0.01 °C (0.01 °F)0.01 °C (0.01 °F)0.01 °C (0.01 °F)0.001 °C (0.001 °F)
Density0.0001 g/cm³0.00001 g/cm³0.0001 g/cm³0.00001 g/cm³0.000001 g/cm³
Features
Power featuresU-View, FillingCheck, Full-range viscosity correction
Special functionsQuick single-point adjustment, temperature scan, built-in ambient pressure sensor, condition monitoring (humidity)Temperature scan, built-in ambient pressure sensor, condition monitoring
Filling optionsPeristaltic pump, Filling kit for pasty samplesAutomatic sample changers
Upgrades and calibrationsPrinters, ISO calibration, AP Connect lab execution system
Technical data
Ambient temperature5 °C to 35 °C (41 °F to 95 °F)15 °C to 35 °C (59 °F to 95 °F)
Minimum sample volumeApprox. 1 mL
Wetted materialsBorosilicate glass, PTFE, ETFE
Dimensions (L x W x H)375 mm x 280 mm x 180 mm (14.8 in x 11.0 in x 7.0 in)526 mm x 347 mm x 230 mm (20.7 in x 13.7 in x 9 in)
Weight13.5 kg (29.8 lb)22.04 kg (48.6 lbs)
Power supplyAC 100 to 240 V; 47 to 63 Hz; DC 24V, 3AAC 100 to 240 V, 50/60 Hz, fluctuation ±10 %, 190 VA
Display7 inches, TFT WVGA (800 x 480 Px); PCAP touchscreen10.1" TFT WXGA (1280 x 800 px); PCAP touchscreen
ControlsTouchscreen, optional keyboard, mouse, and barcode reader
Communication interfaces1 x Ethernet, 3 x USB, 1 x RS2324 x USB, Ethernet, CAN, RS232
Internal storage25000 measured results including camera images60000 measuring values including camera images

Trademarks: PEM (017985525), U-View (006834791), FillingCheck (006834725), Thermobalance (006835094)

* According to type approval
** Valid at ± 2 °C ambient temperature recorded during adjustment
*** Under ideal conditions and for low densities/viscosities

Standards

Open all
Close all

ISO

15212-1

Chinese Pharmacopoeia (ChP)

0601 Relative density determination method

Standards

Open all
Close all

ISO

2811-3
12185
15212-1

ASTM

D1250
D1475
D2501
D4052
D4806
D5002
D5931
D6448

DIN

51757

JIS

K 0061
K 2249

IP

365

ABNT

NBR 14065
NBR 15639

US Pharmacopoeia (USP)

841 - Specific Gravity

European Pharmacopoeia (Ph. Eur.)

2.2.5. Relative density

Japanese Pharmacopoeia (JP)

2.56 Determination of Specific Gravity and Density (4. Measurement using an oscillator-type density meter)

Chinese Pharmacopoeia (ChP)

0601 Relative density determination method

RANP

856-2021
864-2021
895-2022
901-2022
903-2022
905-2022
907-2022
909-2022
911-2022
920-2023

Standards

Open all
Close all

ISO

2811-3
12185
15212-1
18301

ASTM

D1250
D1475
D2501
D4052
D4806
D5002
D5931
D6448

DIN

51757

JIS

K 0061
K 2249

IP

365

ABNT

NBR 14065
NBR 15639

US Pharmacopoeia (USP)

841 - Specific Gravity

European Pharmacopoeia (Ph. Eur.)

2.2.5. Relative density

Japanese Pharmacopoeia (JP)

2.56 Determination of Specific Gravity and Density (4. Measurement using an oscillator-type density meter)

Chinese Pharmacopoeia (ChP)

0601 Relative density determination method

RANP

856-2021
864-2021
895-2022
901-2022
903-2022
905-2022
907-2022
909-2022
911-2022
920-2023

Standards

Open all
Close all

ISO

2811-3
12185
15212-1

ASTM

D1250
D1475
D2501
D4052
D4806
D5002
D5931
D6448

DIN

51757

JIS

K 0061
K 2249

IP

365

ABNT

NBR 14065
NBR 15639

US Pharmacopoeia (USP)

841 - Specific Gravity

European Pharmacopoeia (Ph. Eur.)

2.2.5. Relative density

Japanese Pharmacopoeia (JP)

2.56 Determination of Specific Gravity and Density (4. Measurement using an oscillator-type density meter)

Chinese Pharmacopoeia (ChP)

0601 Relative density determination method

RANP

856-2021
864-2021
895-2022
901-2022
903-2022
905-2022
907-2022
909-2022
911-2022
920-2023

Standards

Open all
Close all

ISO

2811-3
12185
15212-1

ASTM

D1250
D1475
D2501
D4052
D4806
D5002
D5931
D6448

DIN

51757

JIS

K 0061
K 2249

IP

365

ABNT

NBR 14065
NBR 15639

US Pharmacopoeia (USP)

841 - Specific Gravity

European Pharmacopoeia (Ph. Eur.)

2.2.5. Relative density

Japanese Pharmacopoeia (JP)

2.56 Determination of Specific Gravity and Density (4. Measurement using an oscillator-type density meter)

Chinese Pharmacopoeia (ChP)

0601 Relative density determination method

RANP

856-2021
864-2021
895-2022
901-2022
903-2022
905-2022
907-2022
909-2022
911-2022
920-2023

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