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Filtration, separation and purification

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Biotechnology, medical and laboratory

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Ion Exchange Membrane

As a leading partner in the laboratory filtration, separation and purification industry, Alfa Chemistry provides a wide range of products and services to customers in many countries/regions. Ion exchange membranes are among the options we offer for filter membranes. Bipolar membranes are the most in-demand ion exchange membranes among our customers, and we want to make sure they remain so.

Ion-exchange membranes (IEMs) are conductive, semi-permeable membranes consisting of polymer backbones to which charged groups are attached. Ions can move from one solution to another through an exchange membrane with little or no passage of water. IEM has been widely used in seawater desalination, industrial wastewater treatment, food and beverage production, and other fields. An ideal IEM should have high electrical conductivity, low surface resistance, suitable ion exchange capacity, high selectivity, suitable swelling degree and water absorption, as well as high chemical, good mechanical and thermal stability.

IEM Types

The common types of IEM include cation exchange membrane (CEM), anion exchange membrane (AEM), and some special types of IEM, such as proton exchange membrane (PEM), and bipolar membrane (BPM).

  • Cation Exchange Membrane

It refers to an exchange membrane that only allows cations to pass through selectively.

  • Anion Exchange Membrane

It refers to an exchange membrane that allows anions to pass through selectively. Permselectivity is a key parameter for CEMs and AEMs, which indicates how well the membrane discriminates between oppositely charged ions. In general, membrane selective permeability is strongly influenced by membrane properties such as water absorption.

  • Proton Exchange Membrane

PEM is the core component of a Proton Exchange Membrane Fuel Cell (PEMFC), which plays a key role in battery performance. It not only separates reactants, but also transports protons while blocking a direct electronic pathway through the membrane. PEMs are primarily characterized by proton conductivity (σ), methanol permeability (P), and thermal stability.

  • Bipolar Membrane

Bipolar membrane (BPM) is a new type of ion exchange composite membrane, composed of cation and anion-exchange layers. Under a direct current electric field, the charged ions in the solution selectively pass through the BPM to generate protons (H+) and hydroxide ions (OH-). Based on this, BPM in electrochemical cells has become a well-established method for acid-base generation and desalination. The use of BPMs to generate acids and bases has obvious advantages over traditional processes, such as low energy consumption, no side reaction products, and no pollution. Due to their unique properties, BPMs are used in various applications in many fields, such as the (bio)chemical industry, food processing, environmental protection, and energy conversion and storage, among others [1].

Product List

Please click on the link below for product details.

As a professional filtration membrane product supplier, Alfa Chemistry provides you with the above-mentioned high-quality products. Depending on your needs, we can also provide corresponding service support. We invite you to select and purchase, and if you have any concerns, feel free to contact us.


    1. Pärnamäe, R.; et al. Bipolar membranes: A review on principles, latest developments, and applications. Journal of Membrane Science. 2021, 617: 118538.

Anion Membrane

Catalog Product Name Thickness
ACM-IM-006 Anion Membrane T1 ≤40 μm Inquiry
ACM-IM-007 Anion Membrane T2 40-50 μm Inquiry
ACM-IM-008 Anion Membrane T3 ≤60 μm Inquiry
ACM-IM-009 Anion Membrane T4 70-80 μm Inquiry
ACM-IM-010 Anion Membrane T5 70-80 μm Inquiry
ACM-IM-011 Anion Membrane T6 70-80 μm Inquiry
ACM-IM-012 Anion Membrane T7 100-120 μm Inquiry
ACM-IM-013 Anion Membrane T8 100-120 μm Inquiry
ACM-IM-014 Anion Membrane T9 100-130 μm Inquiry
ACM-IM-015 Anion Membrane T10 120-150 μm Inquiry
ACM-IM-016 Anion Membrane T11 120-150 μm Inquiry
ACM-IM-017 Anion Membrane T12 ≤130 μm Inquiry
ACM-IM-018 Anion Membrane T13 130-160 μm Inquiry
ACM-IM-019 Anion Membrane T14 130-160 μm Inquiry
ACM-IM-020 Anion Membrane T15 130-160 μm Inquiry
ACM-IM-021 Anion Membrane T16 140-200 μm Inquiry
ACM-IM-022 Anion Membrane T17 150-200 μm Inquiry
ACM-IM-023 Anion Membrane T18 150-200 μm Inquiry
ACM-IM-024 Anion Membrane T19 160-250 μm Inquiry
ACM-IM-025 Anion Membrane T20 160 μm Inquiry
ACM-IM-026 Anion Membrane T21 160-230 μm Inquiry
ACM-IM-027 Anion Membrane T22 160-230 μm Inquiry
ACM-IM-028 Anion Membrane T23 160-180 μm Inquiry
ACM-IM-029 Anion Membrane T24 160-180 μm Inquiry
ACM-IM-030 Anion Membrane T25 170-200 μm Inquiry
ACM-IM-031 Anion Membrane T26 180 μm Inquiry
ACM-IM-032 Anion Membrane T27 180 μm Inquiry
ACM-IM-033 Anion Membrane T28 180 μm Inquiry
ACM-IM-034 Anion Membrane T29 180 μm Inquiry
ACM-IM-035 Anion Membrane T30 190-220 μm Inquiry
ACM-IM-036 Anion Membrane T31 <200 μm Inquiry
ACM-IM-037 Anion Membrane T32 <210 μm Inquiry
ACM-IM-038 Anion Membrane T33 220 μm Inquiry
ACM-IM-039 Anion Membrane T34 220 μm Inquiry
ACM-IM-040 Anion Membrane T35 290-310 μm Inquiry
ACM-IM-041 Anion Membrane T36 320-350 μm Inquiry
ACM-IM-042 Anion Membrane T37 380-420 μm Inquiry
ACM-IM-043 Anion Membrane T38 400-500 μm Inquiry
ACM-IM-044 Anion Membrane T39 400-500 μm Inquiry
ACM-IM-045 Anion Membrane T40 500 μm Inquiry
ACM-IM-103 Anion Membrane T41 70-80 µm Inquiry
ACM-IM-104 Anion Membrane T42 110-130 µm Inquiry
ACM-IM-105 Anion Membrane T43 110-140 µm Inquiry
ACM-IM-106 Anion Membrane T44 25-35 µm Inquiry
ACM-IM-107 Anion Membrane T45 45-55 µm Inquiry
ACM-IM-108 Anion Membrane T46 60-80 µm Inquiry
ACM-IM-109 Anion Membrane T47 50-60 µm Inquiry
ACM-IM-110 Anion Membrane T48 45-55 µm Inquiry
ACM-IM-111 Anion Membrane T49 70-80 µm Inquiry
ACM-IM-112 Anion Membrane T50 110-130 µm Inquiry
ACM-IM-113 Anion Membrane T51 45-55 µm Inquiry
ACM-IM-114 Anion Membrane T52 25-35 µm Inquiry
ACM-IM-115 Anion Membrane T53 18-22 µm Inquiry
ACM-IM-116 Anion Membrane T54 37-43 µm Inquiry
ACM-IM-117 Anion Membrane T55 26-34 µm Inquiry
ACM-IM-118 Anion Membrane T56 450-500 µm Inquiry
ACM-IM-119 Anion Membrane T57 10-13 µm Inquiry

Cation Membrane

Catalog Product Name Thickness
ACM-IM-046 Cation Membrane T1 ≤40 μm Inquiry
ACM-IM-047 Cation Membrane T2 ≤60 μm Inquiry
ACM-IM-048 Cation Membrane T3 70-80 μm Inquiry
ACM-IM-049 Cation Membrane T4 70-80 μm Inquiry
ACM-IM-050 Cation Membrane T5 100 μm Inquiry
ACM-IM-051 Cation Membrane T6 100-120 μm Inquiry
ACM-IM-052 Cation Membrane T7 100-120 μm Inquiry
ACM-IM-053 Cation Membrane T8 100-150 μm Inquiry
ACM-IM-054 Cation Membrane T9 120-150 μm Inquiry
ACM-IM-055 Cation Membrane T10 120-150 μm Inquiry
ACM-IM-056 Cation Membrane T11 ≤130 μm Inquiry
ACM-IM-057 Cation Membrane T12 140-170 μm Inquiry
ACM-IM-058 Cation Membrane T13 140-250 μm Inquiry
ACM-IM-059 Cation Membrane T14 150 μm Inquiry
ACM-IM-060 Cation Membrane T15 150 μm Inquiry
ACM-IM-061 Cation Membrane T16 150-170 μm Inquiry
ACM-IM-062 Cation Membrane T17 150-200 μm Inquiry
ACM-IM-063 Cation Membrane T18 150-200 μm Inquiry
ACM-IM-064 Cation Membrane T19 150-200 μm Inquiry
ACM-IM-065 Cation Membrane T20 160-180 μm Inquiry
ACM-IM-066 Cation Membrane T21 160-180 μm Inquiry
ACM-IM-067 Cation Membrane T22 180-250 μm Inquiry
ACM-IM-068 Cation Membrane T23 190-220 μm Inquiry
ACM-IM-069 Cation Membrane T24 <200 μm Inquiry
ACM-IM-070 Cation Membrane T25 200-350 μm Inquiry
ACM-IM-071 Cation Membrane T26 210 μm Inquiry
ACM-IM-072 Cation Membrane T27 220 μm Inquiry
ACM-IM-073 Cation Membrane T28 320-350 μm Inquiry
ACM-IM-074 Cation Membrane T29 380-420 μm Inquiry
ACM-IM-075 Cation Membrane T30 380-420 μm Inquiry
ACM-IM-076 Cation Membrane T31 <400 μm Inquiry
ACM-IM-077 Cation Membrane T32 400-500 μm Inquiry
ACM-IM-078 Cation Membrane T33 400-500 μm Inquiry
ACM-IM-120 Cation Membrane T34 110-130 µm Inquiry
ACM-IM-121 Cation Membrane T35 110-140 µm Inquiry
ACM-IM-122 Cation Membrane T36 110-140 µm Inquiry
ACM-IM-123 Cation Membrane T37 21-26 µm Inquiry
ACM-IM-124 Cation Membrane T38 45-55 µm Inquiry
ACM-IM-125 Cation Membrane T39 70-80 µm Inquiry
ACM-IM-126 Cation Membrane T40 100-200 µm Inquiry
ACM-IM-127 Cation Membrane T41 45-50 µm Inquiry
ACM-IM-128 Cation Membrane T42 74-87 µm Inquiry
ACM-IM-129 Cation Membrane T43 450-500 µm Inquiry

PFSA Membrane

Catalog Product Name Thickness
ACM-IM-079 Perfluorosulfonic Acid Membrane T1 90-110 μm Inquiry
ACM-IM-080 Perfluorosulfonic Acid Membrane T2 90-110 μm Inquiry
ACM-IM-081 Perfluorosulfonic Acid Membrane T3 220 μm Inquiry
ACM-IM-082 Perfluorosulfonic Acid Membrane T4 260 μm Inquiry
ACM-IM-083 Perfluorosulfonic Acid Membrane T5 280 μm Inquiry
ACM-IM-084 Perfluorosulfonic Acid Membrane T6 330 μm Inquiry
ACM-IM-085 Perfluorosulfonic Acid Membrane T7 330 μm Inquiry
ACM-IM-086 Perfluorosulfonic Acid Membrane T8 360 μm Inquiry
ACM-IM-087 Perfluorosulfonic Acid Membrane T9 360 μm Inquiry
ACM-IM-088 Perfluorosulfonic Acid Membrane T10 400 μm Inquiry
ACM-IM-130 Perfluorosulfonic Acid Membrane T11 6±1 µm Inquiry
ACM-IM-131 Perfluorosulfonic Acid Membrane T12 9±1 µm Inquiry
ACM-IM-132 Perfluorosulfonic Acid Membrane T13 12±1 µm Inquiry
ACM-IM-133 Perfluorosulfonic Acid Membrane T14 15±1 µm Inquiry
ACM-IM-134 Perfluorosulfonic Acid Membrane T15 12±1 µm Inquiry
ACM-IM-135 Perfluorosulfonic Acid Membrane T16 15±1 µm Inquiry
ACM-IM-136 Perfluorosulfonic Acid Membrane T17 260 µm Inquiry
ACM-IM-137 Perfluorosulfonic Acid Membrane T18 127 µm Inquiry
ACM-IM-138 Perfluorosulfonic Acid Membrane T19 150-180 µm Inquiry
ACM-IM-139 Perfluorosulfonic Acid Membrane T20 115-135 µm Inquiry
ACM-IM-140 Perfluorosulfonic Acid Membrane T21 48-52 µm Inquiry
ACM-IM-141 Perfluorosulfonic Acid Membrane T22 46-52 µm Inquiry
ACM-IM-142 Perfluorosulfonic Acid Membrane T23 14-16 µm Inquiry
ACM-IM-143 Perfluorosulfonic Acid Membrane T24 28-32 µm Inquiry
ACM-IM-144 Perfluorosulfonic Acid Membrane T25 75-65 µm Inquiry

Our products and services are for research use only and cannot be used for any clinical purpose.