PilotUnit Multi

The Alfa Laval PilotUnit Multi is a multipurpose system with a broad selection of options that makes it possible to test all different kinds of membrane filtration products for microfiltration, ultrafiltration, nanofiltration and reverse osmosis in batch or semi-batch mode. It is an ideal tool for easy and reliable scale-up of processes or even small-scale production.

Alfa Laval PilotUnit Multi

Fully integrated, space-saving and state-of-the-art filtration system with broad selection of options

  • Easy to use – fully integrated system on a wheeled stainless steel structure. Data logging included and easy access via USB
  • Compact and robust – comprises housing for single 3.8" spiral membrane, 40 l tank, pump, heat exchanger, valves, instruments and control system
  • Low hold-up volume for high product concentration and minimal test media amount
  • Flexible – pump system can handle low to high viscosity solutions and operates with the whole range of feed spacers (30-80 mil).
  • Adaptable – suitable for pHt™ membranes with high temperature and pH tolerance
Alfa Laval PilotUnit Multi has a flexible membrane area (3–15 m²) and can handle volumes between 50 and 1000 l. The basic unit is available with a number of options, including online monitoring and data collection, to enhance the performance of your membrane filtration process. You can double the spiral membrane area by adding another housing, while the addition of an Alfa Laval LabStak™ M39H module enables you to simultaneously test different MF/UF flat sheet membranes (up to 2 m²). If you want to test our membrane filtration products for nanofiltration and reverse osmosis you will find an option for this as well.

How it works

The Alfa Laval PilotUnit Multi comes as a skid-mounted unit and includes all necessary instruments, equipment and prefabricated piping ready for operation. All you need to do is to install and connect to the product feed, utilities and the power supply.  

The product enters the tank via the feed valve (with level control). It is then pumped to the membrane filtration stage where the system automatically adjusts the pump speed and maintains the required cross-flow rate to reduce fouling and ensure the smooth concentration of your product.

The operator can adjust the controllers from the MemProC® PLC-based control system which includes a data logging system for the unit transmitters. The data can be downloaded to a USB.

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The basic technology behind membrane filtration involves using a semi-permeable membrane to separate a liquid into two distinct streams.

Pumping this liquid across the surface of the membrane creates a positive trans-membrane pressure that allows any components smaller than the porosity of the membrane to pass through, forming the permeate.

Any components larger than the pore size simply cannot pass through, and remain behind in what is called the retentate. The surface of the membrane is kept free of blockages by the force of the liquid flow moving parallel to the membrane surface.

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