The Alfa Laval module M37 is specially designed for ultrafiltration (UF) and microfiltration (MF) of high viscosity products (50-250 cP) and fermentation broths. The module is particularly suited for use in industries such as biotech and pharma, food and beverages as well as pulp and paper

module m37 left side 640x360

Improved products and processes

Ultrafiltration (UF) is unique in that it allows liquids to be separated, concentrated and purified, all at the same time. Water and low molecular-weight substances pass through the membrane whilst high molecular-weight substances are rejected.

The composite structure of our microfiltration (MF) and ultrafiltration (UF) membranes, consisting of a support layer for mechanical strength and a thinner selective layer for the separation, combines the best of two worlds: High mechanical strength and a high capacity/flux.

Plate-and-frame module, M37

The Alfa Laval plate-and-frame M37 module is our high-concentration module for liquids of extremely high viscosity. Many products are non-Newtonian so tend to thin as flow velocity is increased. This effect is fully utilized in the extraordinary design of the thin-channel system of the module M37, making the modules usable for products untreatable by most other UF systems.

The high-concentration Alfa Laval module M37 is developed to meet the future demands for optimized flow dynamics, low energy consumption and low-pressure operation. It is available with membrane area sizes up to 27 m² and it can operate at temperatures up to 80°C, pressures up to 15 bar and pH between 1 and 14. It can be equipped with the entire range of flat sheet ultrafiltration and microfiltration membranes available from Alfa Laval.

Alfa Laval PilotUnit Combi-50 UF/MF

Alfa Laval PilotUnit Combi-50 UF/MFThe Alfa Laval PilotUnit Combi-50 UF/MF is a handy and versatile pilot-scale membrane system comprising an Alfa Laval plate-and-frame module of the type M37 or M38. It is a complete system with necessary pump, valves, tank etc. which needs only power supply, compressed air, water and feed product to operate.


  • processing of substances of extremely high viscosities
  • processing of highly concentrated products
  • low energy consumption
  • standard modules with membrane areas up to 27 m²
  • operation at low pressure
  • rugged yet flexible stainless steel and polymer construction
  • open channel design for handling of wide range of viscosities
  • easy membrane failure detection and exchange on site
  • accurate production up-scaling by increasing size or number of modules
  • sanitary design with all materials in compliance with FDA and EEC regulations


M37 drawing



v板框式模块在锁环或锁条的帮助下使用膜本身将进料/滞留物密封,防止其混入渗透通道。这也避免了板组(plate stack)本身的任何泄漏风险。

Plate-and-frame membrane replacement由于阿法拉伐板框式模块的设计,让客户可以更换单个膜而不影响模块的其他膜。