Pore Size Range: 5–150 μm
Pressure Range: 0–20 kPa
Pressure Accuracy: ±1%
Pressure Resolution: 0.01 kPa
Test Piece Thickness: 0.10–3.5 mm
Test Area: 10 ± 0.2 cm²
Power Supply: AC220V
KJ-20 Filter Paper Pore Size Tester
Pore Size Range: 5–150 μm
Pressure Range: 0–20 kPa
Pressure Accuracy: ±1%
Pressure Resolution: 0.01 kPa
Test Piece Thickness: 0.10–3.5 mm
Test Area: 10 ± 0.2 cm²
Power Supply: AC220V
The KJ-20 Filter Paper Pore Size Tester is designed for determining the maximum pore size of filter paper and testing the aperture of oil filter materials, air filter element materials, filter cloth, and related porous media. It supports 5–150 μm pore size range, 0–20 kPa air pressure range, and 0.01 kPa pressure resolution.
This model helps manufacturers evaluate filter material pore structure, check fabrication integrity, and support quality control before filter media enters production. With automatic aperture calculation, LCD display, presettable parameters, data output function, and compact laboratory structure, it is suitable for R&D, inspection departments, filter manufacturers, testing centers, and routine material verification.
Sample preparation → Filter paper, oil filter material, air filter element material, or filter cloth is prepared according to the required pore size testing method.
Sample clamping → The test piece is fixed in the clamp ring to keep the test area controlled during pressure increase and aperture measurement.
Pressure setting → Test parameters are preset, and air pressure is increased within the 0–20 kPa range according to the required testing procedure.
Aperture calculation → The tester automatically calculates and displays the aperture value during the test, helping operators read the pore size result more conveniently.
Result output → The average pore size value for each specimen or group of specimens can be printed for material comparison, inspection records, or quality control documentation.
| Model | KJ-20 |
| Machine Type | Filter Paper Pore Size Tester |
| Function | Maximum pore size and aperture testing for filter paper and porous filter materials |
| Air Pressure | 0–20 kPa |
| Compression Speed | 2–2.5 kPa/min |
| Display | LCD |
| Pressure Accuracy | ±1% |
| Pressure Resolution | 0.01 kPa |
| Pore Size Range | 5–150 μm |
| Pore Resolution | 0.01 μm |
| Test Piece Thickness | 0.10–3.5 mm |
| Test Area | 10 ± 0.2 cm² |
| Inner Diameter of Clamp Ring | φ35.7 ± 0.5 mm |
| Cylinder Volume | 2.5 L |
| Instrument Size | 275 × 440 × 315 mm |
| Power Supply | AC220V |
| Applicable Standards | ISO 2942:2001, GB/T 14041.1-1993, CFS/T 8002-2011, ISO 4003 |
The tester is used to determine the maximum pore size of filter paper and related porous filter materials, helping evaluate material filtration structure before production or inspection approval.
It is suitable for filter paper, oil filter materials, air filter element materials, filter cloth, and other porous media used in filter manufacturing and quality inspection.
The equipment can automatically calculate and display aperture values during testing, reducing manual calculation work and supporting more convenient laboratory operation.
The large LCD display allows operators to view pressure and test parameters clearly, while presettable parameters make repeated testing more practical.
The tester can print average pore size values for single specimens and specimen groups, supporting quality control records and material batch comparison.
With an instrument size of 275 × 440 × 315 mm, this model is convenient for R&D laboratories, quality control departments, inspection centers, and filter material testing rooms.
To confirm whether this model fits your filter paper pore size testing process, the following details are usually needed for machine selection or technical recommendation.
This model belongs to automated filter testing equipment and also covers the filter paper pore size testing process. You may also compare related machines in the following categories:
Impact Pendulum: 0–16 N / 0–32 N / 0–64 N
Sample Size: 100 × 63 mm
Incision Length: 20 ± 0.5 mm
Fixture Distance: 2.8 ± 0.3 mm
Force Accuracy: ≤ ±1
Machine Size: 400 × 210 × 395 mm
Bursting Range: 0–5600 kPa
Accuracy: ±0.5% FS
Resolution: 0.01 kPa
Clamping Force: >690 kPa, adjustable
Pressing Speed: 170 ± 15 ml/min
Air Permeability Range: 0.2–12826 mm/s
Test Accuracy: Better than ±2%
Test Pressure: 0–4000 Pa
Test Area: 5 / 20 / 38 / 50 / 100 cm²
Nozzle Quantity: 11 pcs
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