132542，再生纤维素美国光谱医学SPECTRUMLABS即用型透析袋，S/P 6 50kD 28mm 33英尺，Standard Grade Dialysis Membranes
标准等级再生纤维素（RC）由从棉毛纤维提取的天然纤维素构成，可广泛应用于实验室透析。这种透明、柔韧的膜孔径均一且低廉、结实，非常适用于脱盐、缓冲液置换、大分子纯化及其他一般应用。由于具有广泛的化学相容性，标准RC膜能够与稀强酸碱液、高浓度的弱酸和弱碱、大多数醇类及一些温和的或低浓度有机溶剂（包括DMSO）共用，但与一些强有机溶剂接触可能会破坏RC膜，标准RC膜能够在pH2-12和4-121℃条件下
Spectra/Por 6-7 标准级再生纤维素透析膜（预湿 & 预处理卷装）
Spectra/Por 6透析膜采用预湿型即用包装，使用前无需浸漂去除甘油；Spectra/Por 7透析膜经预处理工艺进一步优化，zui大限度地降低了重金属和硫化物残留量。两种膜均采用0.05%*湿包装。
一、透析的定义：
透析（dialysis）是指物质穿过膜的选择性扩散过程。可用于分离分子量大小不同的溶质，低于膜所截留阈值分子量的物质可扩散穿过膜，高于膜截留阈值分子量的物质则被保留在半透膜的另一侧。
二、透析袋：
透析只需要使用的半透膜即可完成。通常是将半透膜制成袋状，就叫做透析袋。在生物大分子的制备过程中，除盐、除少量有机溶剂、除去生物小分子杂质和浓缩样品等都要用到透析的技术。比如蛋白质和DNA的脱盐浓缩，纳米材料的筛选，中药成分萃取后有机溶剂的去处等。
三、透析方法
透析只需要使用的半透膜即可完成。通常是将半透膜制成袋状，将生物大分子样品溶液置入袋内，将此透析袋浸入水或缓冲液中，样品溶液中的大分子量的生物大分子被截留在袋内，而盐和小分子物质不断扩散透析到袋外，直到袋内外两边的浓度达到平衡为止。保留在透析袋内未透析出的样品溶液称为“保留液”，袋（膜）外的溶液称为“渗出液”或“透析液”。通过多次更换透析液而去除盐和小分子物质。
美国光谱医学即用型透析袋
| 再生纤维素RC膜透析袋 | |||
| 产品编号 | 中文名称 | 英文名称 | 市场价 |
| 128118T | S/P 6 试验包, 10kD 18mm 1米 | S/P6 10kD 18mm 1m | 600 |
| 128158T | S/P 6 试验包, 15kD 18mm 1米 | S/P6 15K 18MM 1m | 600 |
| 128206T | S/P 6 试验包, 25kD 6mm 1米 | S/P6 25K 6MM 1m | 600 |
| 128218T | S/P 6 试验包, 25kD 18mm 1米 | S/P6 25K 18MM 1m | 600 |
| 128224T | S/P 6 试验包, 25kD 24mm 1米 | S/P6 25K 24MM 1m | 600 |
| 128358T | S/P 7 试验包, 8kD 18mm 1米 | S/P7 8K 18MM 1m | 600 |
| 128406T | S/P 7 试验包, 10kD 6mm 1米 | S/P7 10K 6MM 1m | 600 |
| 128418T | S/P 7 试验包, 10kD 18mm 1米 | S/P7 10K 18MM 1m | 600 |
| 128456T | S/P 7 试验包, 15kD 6mm 1米 | S/P7 15K 6MM 1m | 600 |
| 128458T | S/P 7 试验包, 15kD 18mm 1米 | S/P7 15K 18MM 1m | 600 |
| 128506T | S/P 7 试验包, 25kD 8mm 1米 | S/P7 25K 8MM 1m | 600 |
| 128518T | S/P 7 试验包, 25kD 18mm 16米 | S/P7 25K 18MM 1m | 600 |
| 128524T | S/P 7 试验包, 25kD 24mm 1米 | S/P7 25K 24MM 1m | 600 |
| 132103T | S/P 7 试验包, 1KD 18MM, 1M | S/P Trial kits | 600 |
| 132104T | S/P 7 试验包, 1KD 38MM, 1M | S/P Trial kits | 600 |
| 132105T | S/P 7 试验包, 1KD 45MM, 1M | S/P Trial kits | 600 |
| 132107T | S/P 7 试验包, 2KD 18MM, 1M | S/P Trial kits | 600 |
| 132108T | S/P 7 试验包, 2KD 38MM, 1M | S/P Trial kits | 600 |
| 132109T | S/P 7 试验包, 2KD 45MM, 1M | S/P Trial kits | 600 |
| 132110T | S/P 7 试验包, 3.5KD 18MM, 1M | S/P Trial kits | 600 |
| 132111T | S/P 7 试验包, 3.5KD 45MM, 1M | S/P Trial kits | 600 |
| 132112T | S/P 7 试验包, 3.5KD 54MM, 1M | S/P Trial kits | 600 |
| 132113T | S/P 7 试验包, 8KD 12MM, 1M | S/P Trial kits | 600 |
| 132114T | S/P 7 试验包, 8KD 24MM, 1M | S/P Trial kits | 600 |
| 132115T | S/P 7 试验包, 8KD 32MM, 1M | S/P Trial kits | 600 |
| 132116T | S/P 7 试验包, 8KD 40MM, 1M | S/P Trial kits | 600 |
| 132117T | S/P 7 试验包, 10KD 12MM, 1M | S/P Trial kits | 600 |
| 132118T | S/P 7 试验包, 10KD 24MM, 1M | S/P Trial kits | 600 |
| 132119T | S/P 7 试验包, 10KD 32MM, 1M | S/P Trial kits | 600 |
| 132120T | S/P 7 试验包, 10KD 45MM, 1M | S/P Trial kits | 600 |
| 132121T | S/P 7 试验包, 15KD 12MM, 1M | S/P Trial kits | 600 |
| 132122T | S/P 7 试验包, 15KD 24MM, 1M | S/P Trial kits | 600 |
| 132123T | S/P 7 试验包, 15KD 32MM, 1M | S/P Trial kits | 600 |
| 132124T | S/P 7 试验包, 15KD 45MM, 1M | S/P Trial kits | 600 |
| 132125T | S/P 7 试验包, 25KD 12MM, 1M | S/P Trial kits | 600 |
| 132126T | S/P 7 试验包, 25KD 28MM, 1M | S/P Trial kits | 600 |
| 132127T | S/P 7 试验包, 25KD 34MM, 1M | S/P Trial kits | 600 |
| 132128T | S/P 7 试验包, 50KD 12MM, 1M | S/P Trial kits | 600 |
| 132129T | S/P 7 试验包, 50KD 28MM, 1M | S/P Trial kits | 600 |
| 132130T | S/P 7 试验包, 50KD 34MM, 1M | S/P Trial kits | 600 |
| 132131T | S/P 7 试验包, 8KD 50MM, 1M | S/P Trial kits | 600 |
| 132540T | S/P 6 试验包, 50KD 12MM, 1M | S/P Trial kits | 600 |
| 132542T | S/P 6 试验包, 50KD 28MM, 1M | S/P Trial kits | 600 |
| 132544T | S/P 6 试验包, 50KD 34MM, 1M | S/P Trial kits | 600 |
| 132550T | S/P 6 试验包, 25KD 12MM, 1M | S/P Trial kits | 600 |
| 132552T | S/P 6 试验包, 25KD 28MM, 1M | S/P Trial kits | 600 |
| 132554T | S/P 6 试验包, 25KD 34MM, 1M | S/P Trial kits | 600 |
| 132560T | S/P 6 试验包, 15KD 12MM, 1M | S/P Trial kits | 600 |
| 132562T | S/P 6 试验包, 15KD 24MM, 1M | S/P Trial kits | 600 |
| 132564T | S/P 6 试验包, 15KD 32MM, 1M | S/P Trial kits | 600 |
| 132566T | S/P 6 试验包, 15KD 45MM, 1M | S/P Trial kits | 600 |
| 132570T | S/P 6 试验包, 10KD 12MM, 1M | S/P Trial kits | 600 |
| 132572T | S/P 6 试验包, 10KD 24MM, 1M | S/P Trial kits | 600 |
| 132574T | S/P 6 试验包, 10KD 32MM, 1M | S/P Trial kits | 600 |
| 132576T | S/P 6 试验包, 10KD 45MM, 1M | S/P Trial kits | 600 |
| 132579T | S/P 6 试验包, 8KD 12MM, 1M | S/P Trial kits | 600 |
| 132580T | S/P 6 试验包, 8KD 24MM, 1M | S/P Trial kits | 600 |
| 132582T | S/P 6 试验包, 8KD 32MM, 1M | S/P Trial kits | 600 |
| 132584T | S/P 6 试验包, 8KD 40MM, 1M | S/P Trial kits | 600 |
| 132586T | S/P 6 试验包, 8KD 50MM, 1M | S/P Trial kits | 600 |
| 132590T | S/P 6 试验包, 3.5KD 18MM, 1M | S/P Trial kits | 600 |
| 132592T | S/P 6 试验包, 3.5KD 45MM, 1M | S/P Trial kits | 600 |
| 132594T | S/P 6 试验包, 3.5KD 54MM, 1M | S/P Trial kits | 600 |
| 132620T | S/P 6 试验包, 2KD 18MM, 1M | S/P Trial kits | 600 |
| 132625T | S/P 6 试验包, 2KD 38MM, 1M | S/P Trial kits | 600 |
| 132633T | S/P 6 试验包, 2KD 45MM, 1M | S/P Trial kits | 600 |
| 132636T | S/P 6 试验包, 1KD 18MM, 1M | S/P Trial kits | 600 |
| 132638T | S/P 6 试验包, 1KD 38MM, 1M | S/P Trial kits | 600 |
| 132640T | S/P 6 试验包, 1KD 45MM, 1M | S/P Trial kits | 600 |
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