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HNPM filters

Filters in microfluidics play a critical role in ensuring the purity of liquids and limiting particle size. This is particularly important for processes that operate at the molecular level, which cannot tolerate impurities. By preventing foreign particles, fibres, and even chips from entering downstream devices and microfluidic structures, filters help maintain the reliability of the production process, protect the product from contamination, safeguard sensitive components from particles, and ensure the overall functionality of the system.
Straight inline filters, T-filters, and inlet filters to protect your downstream devices and prevent impurities

The use of HNPM filters

HNP Mikrosysteme strongly recommends the use of a filter with a pore size or mesh width of 10 µm to protect the micro annular gear pump.

They offer a range of filters, including straight inline filters, inline T-filters, and inlet filters made from various materials with different filter surfaces. These HNPM filters can be ordered separately as a single product. Suurmond also uses them to protect pumps other than HNPM micro pumps.

A filter monitoring sensor can be implemented to detect impending maintenance or cleaning of the filter, as well as a closed supply line. In the "T-version", the sensor can be directly adapted, while for straight filters, it can be integrated by adding a separate mounting block.

Advantages of HNPM filters

  • High filtration capacity in relation to the internal volume, due to large filter area
  • High-performance filter elements for low pressure losses even at higher flow rates and viscosities
  • Purely metallic filter elements without solder or adhesives
  • For food and pharmaceutical industries: FDA-compliant sealing materials, surface roughness ≤0.8 and hygienic fittings on request
  • User-friendly and economical; filter elements can be cleaned and replaced
  • Very compact (height from 21.5 to 174mm)
  • Small dead volume
  • Smooth surface Ra 0.8

Technical details of HNPM filters

Internal volume
0.3 ml – 195ml
Filter area
1.3cm2 – 450cm2
Filter fineness
3 to 100µm
Max system pressure
140 – 200 bar
Max differential pressure
5 – 20 bar
Fluid connections
depending on filter type: ¼” 28 UNF, 1/8” NPT, 3/8” NPT, G1/2”
corrosion-resistant materials 316L, stainless steel or alloy C22, FPM, EPDM

Are you looking for a solution to handle or process your fluid? Our specialists will be happy to advise you.

Let's talk!

Suurmond supplies solutions to optimize your process and improve the quality of your end-product. Our specialists will be happy to advise you.

Let’s talk!

Let's talk!

Suurmond BV
The Netherlands
T +31 (341) 25 49 00 

Voltweg 2
8071 CZ Nunspeet

CoC 08142400
VAT NL815360800B01

Suurmond BV
Belgium and Luxembourg
T +32 (3) 54 44 070

Noorderlaan 109
2030 Antwerp

Company no. 0440573109
VAT BE-0440.573.109

Suurmond UK Ltd
Great Britain & Ireland
T +44 (1386) 423 756

7e Enterprise Way
Evesham, Worcester

Registration no. 5113524
VAT GB 845 7137 10

Suurmond (France)
T +33 (474) 02 66 75

Parc Millésime, bâtiment 4
119 rue Michel Aulas
69400 Limas

VAT: FR59815325303
Registration no.: 59 815 325 303

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