PES membrane is a membrane polymer that is well established in the biotechnological and pharmaceutical industries. It is a stable polymer featuring a broad pH and temperature range. PES membranes are designed for use in the biotechnical and pharmaceutical industries.

  • Stable polymer featuring a broad pH and temperature range

  • Minimal adsorption of proteins, viruses, etc.
  • Membrane regeneration, storage and depyrogenation can be accomplished by using NaOH even at elevated temperatures
  • Membrane retention is unaffected by repeated re-use

Item No.: 

*Custom/bulk order quotes are provided within 72 hours of request.

PES ECO ultrafiltration cassettes are available in the following molecular weight cut-offs: 10 kDa30 kDa100 kDa300 kDaHydrosart® ECO main applications are:IGgBlood factorsEnzymesPeptides"


  • Industry
    Pharma / Biotech

Compliance Information

  • Bacterial Endotoxins
    < 0.18 EU/mL as determined by the LAL test
  • Biological Reactivity
    All materials of this filter element meet the requirements of the current USP Biological Reactivity tests <88> for plastics Class VI (Systemic Injection, Intracutaneous and Implantation tests).
  • Extractables
    The total amount of extractables is well below the limits established by the current USP unter "Sterile Water for Injection".


  • Filtration Area
    0.7 m²
  • Flow Channel Geometry
    Protein conc. <20% /or viscosity max.3cp

General Specifications

  • Cassette Format
    Sartocon Cassettes
  • Filter Class
  • Filter Configuration
    Sartocon® ECO
  • Filter Format

Materials of Construction

  • Integral Frame
    Polypropylene (PP)
  • Membrane Material
    Polyethersulfone (PES)
  • Sealing Compound
    Silicone White (High chemical resistance)
  • Spacer
    Polypropylene (PP)

Operating Conditions

  • Maximum Inlet Pressure
    4 bar
  • pH Stability
    pH 1 – 14

Physicochemical Information

  • MWCO
    300 kDa

Product Information

  • Brand
Sartoflow® 20, 1.4435, F/R38/P26, DIN

The Sartoflow® 20 stainless steel holder with hydraulic is designed for TFF applications from 200 L to 2500 L volumes. The holder is optimized for use with 4 Sartocon® up to 20 Sartocube® production scale TFF cassettes (max. 14 m2). Typical applications of the Sartoflow® 20 system includes concentration and diafiltration of proteins, vaccines, antibodies, oligo nucleotides, endotoxin removal etc., cell harvesting and clarification processes.