DEAE-葡聚糖凝膠A50是以交聯(lián)葡聚糖為基質(zhì)，通過(guò)化學(xué)方法引入電荷基團(tuán)二乙氨乙基，制成外形呈珠狀的弱堿型陰離子交換劑，此類(lèi)交換劑對(duì)核酸和蛋白質(zhì)有較高的結(jié)合容量，且流速比無(wú)定形纖維素離子交換劑快。為陰離子交換劑，吸附酸性蛋白，可分離中等大小生物分子（30-200KD）。
Type of ion exchanger：Weak anion
Total ionic capacity(mmol/g dry powder)：3～4
Available capacity(mg/ml avained gel)：
①thyroglobulin(MW669000)：2
②HSA(MW68000)：110
③α-lactalbumin(MW14300)：50
Bead structure：Cross-linked dextran
Dry particle size range：40～120um
Max operating linear flow rate：45cm/h at 25℃；HR 16/10 column；5cm bed height
pH working range：2～9
pH stability：long term and short term 2～12
Chemical stability：Stable to all commonly used aqueous buffers and additives such as 8 M urea and 6 M guanidine hydrochloride
Physical stability：Volume changes due