伯乐分析级阴离子交换介质 | Bio-Rad Laboratories

AG 树脂经过高度纯化，去除了有机和无机杂质。由于树脂颗粒度稳定地控制在一个狭小范围内，因此能够提供良好的分辨率和重复性。

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AG、AG-MP 和 Bio-Rex 5 树脂

AG（分析级）树脂 — AG 树脂经过高度纯化，去除了有机和无机杂质。由于树脂颗粒度稳定地控制在一个狭小范围内，因此能够提供良好的分辨率和重复性。 AG 树脂可作为强/弱阳离子和阴离子交换剂提供，也可作为混合床离子交换剂提供。许多树脂提供了多种离子形式，并且可从一种形式转换为另一种形式。 AG 树脂主要用于分离低分子量化合物，例如无机离子、有机酸、核酸或碳水化合物。

AG 1 和 2 树脂是强碱性阴离子交换剂，其季铵官能团连接至苯乙烯二乙烯基苯共聚物晶格。树脂交联量决定微球的孔径。交联度较低的树脂具有更加开放的结构，与高度交联的树脂相比，可渗透分子量更高的物质。它还具有较低的物理抗收缩性和抗溶胀性，因此可吸收更多的水份，并且与同等干直径的高交联树脂相比，会溶胀为更大的湿直径。下层交联树脂（如 AG 1-X2）用于吸附和分级分离分子量相对较高的物质，如肽、核糖核酸和脱氧核糖核酸以及铀。上层交联树脂（如 AG 1-X8）用于吸附、交换和分离低分子量的无机阴离子，并用于环核苷酸测定和分级分离有机酸等应用。

AG MP-1M 树脂 — 这种树脂是等同于 AG 1 树脂的大孔树脂。干燥情况下，其有效表面积约为每克 23 平方米，疏松度为 20%。

Bio-Rex 5 树脂 — 主要包含苯乙烯—二乙烯基苯晶格上的叔胺和部分季胺。 Bio-Rex 5 树脂可通过弱相互作用交换碘、溴和氯等阴离子，便于洗脱和再生。 Bio-Rex 5 树脂对有机酸具有亲和性，可用于去除糖中的酸。它具有两种干网大小（100–200 和 200–400），并且全部都是分析级纯度。它们具有完善的尺寸规格，已经过纯化和转换，适用于精确、可重复的分析技术。

分子生物学和生物技术级树脂

分子生物学级树脂，化学性质与分析级树脂相同，经过验证确认不存在内、外切核酸酶活性以及连接酶抑制剂。

生物技术级树脂经过特殊处理，每克所含的微生物少于 100 个。

根据要求提供工业化应用的更大包装或其它特殊包装。

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伯乐分析级阴离子交换介质 | Bio-Rad Laboratories

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