Porometer 3G instruments from Anton Paar GmbH offer precise and repeatable through-pore size measurements within 30 minutes for any sample. Their general measurement speed and easy operation make these capillary flow porometers the ideal choice for through-pore size distribution measurements of filtration media.
Based on the pore size range and flow-through characteristics of users’ samples, there is a Porometer 3G that fits exactly to the users’ needs.
Porometer 3G micro
- Quantifies pores of size ranging from 0.07 to 100 μm
- Utilized with an inlet gas source with up to 100 psi (6.9 bar)
Porometer 3G z
- Used with inlet gas source(s) with up to 300 psi (20.7 bar)
- Measures pore from less than 0.03 to 500 μm
Porometer 3G zH
- Measures pores from less than 0.018 μm to 500 μm
- Utilized with inlet gas source(s) with up to 500 psi (34.5 bar)
- Houses sample flow rates of 0.01 to 200 L/minute with standard sample holder
Key Features
No Need for Calibrations: Saving Operator Time and Effort
The pressure sense line present in Porometer 3G instruments quantifies the pressure directly at the sample and is hence unaffected by altering flow rates. On the other hand, traditional capillary flow porometers quantify the pressure at a certain fixed point before employing the sample and make use of sample-specific flow path calibrations to estimate the pressure at the sample.
Since the amount of airflow inside this path impacts the pressure gradient that exists, every sample type needs calibration to be executed and applied. The Porometer 3G’s special design avoids the need for calibrations. This implies that much less effort is required and eventually more precise measurements are ensured.
Image Credit: Anton Paar GmbH
Automatic Pressure Regulation Ensures Ideal Measurement Conditions Every Time
Porometer 3G instruments make use of an intelligent pressurization routine specially developed to guarantee outcomes in equilibrium through the entire measurement.
This routine avoids the issues associated with traditional systems because measurements made with a constant ramp rate, which is highly rapid, offer smaller-than-correct pore sizes, as they do not give sufficient time for equilibrium to be obtained at each pressure data point.
On the contrary, similar measurements performed very slowly accentuate the effects of wetting fluid evaporation, thereby offering larger-than-correct pore sizes. Porometer 3G units control the pressure automatically leading to precise outcomes independent of the settings.
Image Credit: Anton Paar GmbH
Complete Through-Pore Size Distribution for the Full Set of Data
Porometer 3G performs all flow measurements on a single flow meter, and thus achieves a constant account of through-pores present in users’ material. This includes the critical region between the optimum and mean pore sizes.
Capillary flow porometers in which measurement devices are switched once the bubble point is achieved face the risk of missing a portion of this data. Users can depend on Porometer 3G to provide an entire data set.
Image Credit: Anton Paar GmbH
Wet-then-Dry, Dry-then-Wet — Choice for Users
Capillary flow porometry measurements include both a “wet curve” (the flow leading to the expulsion of wetting fluid from pores at various pressures) and a “dry curve” (the flow via the material over the pressure range of the measurement when wetting fluid is present).
Quantifying wet-then-dry is very easy for the operator and does not involve opening the sample holder in between during the experiment.
Dry-then-wet measurements eliminate worries regarding possible impacts on the sample while making the wet curve. Both measurements are included on all Porometer 3G instruments. Users can enjoy the workflow comfort of wet-then-dry measurements and still have the option to carry out dry-then-wet measurements when samples demand it.
Image Credit: Anton Paar GmbH
Adapts to the Wide Range of Sample Requirements in Users’ Lab
All Porometer 3G instruments exhibit the potential to utilize different shape factors and various fluids to develop a test method catered particularly according to sample measurement requirements of the users. Their design is ideal for adjusting the samples of various sizes and shapes through external holders for use with hollow fiber, rigid tubular or solid piece configurations.
Image Credit: Anton Paar GmbH
Technical Specifications
Source: Anton Paar GmbH
| |
3G micro |
3G z |
3G zH |
| Pore size, minimum |
0.07 µm |
<0.03 µm |
<0.02 µm |
| Pore size, maximum |
100 µm |
500 µm |
500 µm |
| Pressure controllers |
1 |
2 |
2 |
| Controller #1 |
0 psi to 100 psi |
0 psi to 30 psi |
0 psi to 30 psi |
| Controller #2 |
n/a |
0 psi to 300 psi |
0 psi to 500 psi |
| Pressure sensors |
2 |
3 |
3 |
| Sensor #1 |
0 psi to 5 psi |
| Sensor #2 |
0 psi to 100 psi |
| Flow sensors |
1 |
1 |
2 |
| Sensor #1 |
0 L/min to 100
L/min |
0 L/min to 100
L/min (standard) |
0 L/min to 10
L/min |
| Sensor #2 |
n/a |
n/a |
0 L/min to 200 L/min |
| Flow sensor switching |
n/a |
manual |
auto |
| Pressure sensing accuracy |
±0.05% f.s. |
| Pressure resolution |
16 bit A/D equivalent |
| Flow sensor type |
Precision thermal mass flow |
| Flow sensor settling time |
<2 seconds |
Flow sensor temperature
coefficient |
<0.05%/°C (15 °C to 45 °C) |
| |
General specifications |
| Electrical properties |
90 V to 240 V AC, 50/60 Hz |
Main control unit
dimensions (H x D x W) |
40 cm x 45 cm x 19 cm (15.8 in x 17.8 in x 19 in) |
Sample holder block
dimensions (H x D x W) |
24 cm x 32 cm x 15 cm (9.5 in x 12.6 in x 6 in) |
| This table shows standard configurations. Different pressure and flow rate ranges are available for some models. |