離子交換葡聚糖凝膠是葡聚糖經環氧氯丙烷交聯后形成的具有多孔三維空間網狀結構和離子交換功能基團的多糖衍生物。DEAE-A25 顆粒大小：40-120μm 分離大小：小蛋白及巨大分子；
離子交換葡聚糖凝膠具有親水性強、不會引起生物分子的變性與失活，母鏈對蛋白質、核酸及其他生物分子的非特異吸附能力小的特性。它能引入大量活性基團而骨架不被破壞，交換容量很大，外形呈球形，裝柱后，流動相在柱內流動的阻力較小，流速理想。
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Type of ion exchanger
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Weak anion
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Binding Capacity/ml Chromatography Medium
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thyroglobulin (Mr 669 000)- 1 mg/ml drained medium), HSA (Mr 68 000)- 30 mg/ml drained medium), α-lactalbumin (Mr 14 300)- 140 mg/ml drained medium)
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Particle size range
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40~120µm
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pH working range
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2~9
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Chemical stability
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Stable to all commonly used aqueous buffers additives such as 8 M urea and 6 M guanidine hydrochloride.
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Appearance
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White beads
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葡聚糖凝膠 LH-20
葡聚糖凝膠 G-75
葡聚糖凝膠 G-50
葡聚糖凝膠 G-25
葡聚糖凝膠 G-15
葡聚糖凝膠 G-10