Anton Paar GmbH combines decades of expertise and innovation know-how with its Ultrapyc, the most user-friendly gas pycnometer for both semi-solid and solid density on the market.
Ultrapyc 3000

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Reliable Performance Across Standard Solid Samples
- Accurate measurement for sample volumes from 4.5 cm3 to 135 cm3
- Flexible flow or pulse modes for optimized sample preparation
Ultrapyc 5000
Advanced density analysis for powders, solids, and semi-solids
- PowderProtect technology helps prevent instrument contamination
- Integrated Peltier temperature control eliminates the need for an external bath
- Delivers precise results for sample volumes between 4.5 cm3 and 135 cm3
Ultrapyc 7000
Premium performance with fully integrated and customizable capabilities
- Supports ASTM D6226-compliant methods for determining open-cell foam content
- PowderProtect safeguards the instrument from contamination
- Peltier-regulated temperature control from 3 °C to 60 °C
- Ensures accuracy across sample volumes of 4.5 cm3 to 135 cm3
Ultrapyc 7000 Micro
Designed for ultra-low sample volumes, with advanced precision and flexibility
- Accurately measures sample volumes from 0.1 cm3 to 10 cm3
- Features full PowderProtect contamination prevention
- Integrated Peltier control from 3 °C to 60 °C, no external bath required
- An excellent fit for research and development, or when working with limited material quantities
Key Features
With Ultrapyc’s rapid method selection and built-in accessories, users can transition from sample reception to measurement execution, and finally to result analysis on the touchscreen or within Anton Paar’s AP Connect lab execution system in less than three minutes. Ultrapyc can perform measurements independently in under a minute, making it ideal for monitoring the quality of your samples during the manufacturing process.
The process of conducting density measurements for solid pieces, powders, slurries, and semi-solids has reached unprecedented speed and accuracy.
Automate for Accuracy

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The Ultrapyc series instruments automatically determine optimal settings and accurately control temperature, eliminating the need for manual adjustments and minimizing the risk of user error.
When combined with the TruLock lid, which ensures a stable and repeatable chamber volume, Ultrapyc gas pycnometers provide the utmost precision in the analysis of solid and semi-solid densities.
Measure any Sample with Confidence
Ultrapyc gas pycnometers manufactured by Anton Paar are designed to handle challenging samples more effectively and can accommodate a wider range of sample materials (such as pellets, slurries, and foams) than similar instruments.
- The use of disposable cups allows for rapid and mess-free measurement of challenging substances like bitumen, thereby eliminating the need for cleaning.
- The innovative PowderProtect feature ensures the safe analysis of powders and volatile slurries without risking instrument damage.
- A diverse range of sample cells and integrated analysis methods further streamline workflows, establishing the Ultrapyc series as the preferred choice for intricate density measurements.
Work Fast, Save Time

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The user can transition from sample preparation to measurement and then to results in less than 3 minutes using the Ultrapyc. The swift method selection and seamlessly integrated accessories optimize each phase, delivering fast, dependable results with minimal effort.
Optimize Scarce Resources with the Ultrapyc 7000 Micro Gas Pycnometer

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The Ultrapyc 7000 Micro stands as the most precise and sophisticated small-volume gas pycnometer available today. It allows for the preservation of rare samples and the safeguarding of valuable materials through its industry-leading small-volume measurements, which can reach as low as 0.02 cm3 – making it perfect for high-cost or limited-availability materials.
Take Control of Temperature Regulation in Gas Pycnometer Measurements

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Ultrapyc instruments offer an industry-leading temperature range spanning from 3 °C to 60 °C.
With a temperature control precision of ±0.02 °C, the instrument provides rapid stabilization and reliable results for slurries, suspensions, gels, and other materials. Ultrapyc guarantees consistent results even for the most temperature-sensitive samples.
Specifications
Source: Anton Paar GmbH
| |
3000 |
5000 |
7000 |
7000 Micro |
| Performance specifications |
| Accuracy |
0.02 %a |
0.015 %a |
0.075 %b |
| Number reference volumes |
2 (TruPyc) |
| Nominal reference volumes |
50 cm3 & 8 cm3 |
2 cm3 & 5 cm3 |
| Inserts available |
135 cm3, 50 cm3, 10 cm3, 4.5 cm3, 1.8 cm3, 0.25 cm3 |
10 cm3, 4.5 cm3, 1.8 cm3, 0.25 cm3, 0.1 cm3 |
| Preparation modes |
Flow, pulse, none |
Flow, pulse, vacuum, none |
| Gas expansion direction |
Sample chamber first |
Bi-directional flow (PowderProtect) |
| Built-in temperature control |
No |
3 °C to 50 °C |
3 °C to 60 °C |
| Temperature stability |
No |
0.02 °Cc |
| Built-in & customizable method library |
No |
Yes |
| Built-in foam methods and calculations |
No |
No |
Yes |
No |
| Sample chamber closure |
Repeatable dual-turn self-aligning lid (TruLock) |
| Display & control |
7-inch TFT WVGA (800×480) PCAP touchscreen |
| Graphical user interface |
Yes |
| Transducer accuracy |
Better than 0.1 % |
| Pressure reading resolution |
Digital pressure readout 0.0001 psi |
| Connectivity Specifications |
| USB ports |
4 |
| Printer compatible |
Yes |
| Balance compatible |
Yes |
| Barcode / QR reader compatible |
Yes |
| PC / Network connectivity |
Yes (AP Connect) |
Yes (AP Connect or network shares) |
| Language support |
| Languages |
Chinese, English, French, German, Japanese, Korean, Portuguese, Spanish, Turkish |
Chinese, English, French, German, Japanese, Korean, Polish, Portuguese, Spanish, Turkish |
| Physical specifications |
| Width × depth × height |
27 cm (11 in) × 48 cm (19 in) × 25 cm (10 in) |
| Weight |
10 kg (22 lb) |
| Gas used (not supplied) |
Ultra-high-purity He, N2, or other non-reactive, non-corrosive gas (e.g., Ar) regulated to ≤ 30 psi / 2.07 bar |
| Power supply |
External AC/DC Adapter 100-240 V AC 47-63 Hz, Output 24 VDC 3 A |
External AC/DC Adapter 100-240 V AC 47-63 Hz, Output 24 VDC 5 A |
| Environmental specifications |
| Ambient temperature |
10 °C to 35 °C (50 °F to 95 °F) |
| Air humidity |
10 % to 90 % RH (non-condensing) |
| Altitude |
Maximum 3000 m (9800 ft) |
| Indoor/outdoor usage |
Indoor only |
| Pollution degree |
2 |
| Trademarks |
Ultrapyc (5362587) |
a With reference volume of 70.699 cm3
b With reference volume of 2.145 cm3
c For sample temperatures ≥ 15 °C under standard laboratory conditions