人妻网页_欧美A级网站_男女下面进入拍拍免费看_无码大尺度肉免费视频,情草久色,丰满人妻在线播放,明星专区亚洲综合图区网,三级图片小说亚州,日韩AV无码中文无码电影下载,av在线免费观看网址,热88在线视频免费观看

Promix SP is a column for very short and/or very hydrophilic peptides. Typically it is difficult to retain such peptides on RP column. The Promix SP column offers an improved retention profile and alternative selectivity if compared with RP separation. Promix AP is a column designed for short basic peptides. This phase allows the retention of peptides with several histidine and lysine residues. A pH gradient is the most convenient way to control retention of basic peptides on this column. Use a buffer with a neutral or slightly acidic pH (4.5 – 7) in the beginning of the gradient, and use a more acidic buffer (pH 2 – 3.5) in the end of the gradient elution. Promix MP is a column designed for medium size hydrophobic peptides. Typical applications include protein digest which increases peak capacity of the digest by 30-50%. This column offers alternative selectivity if compared with simple RP columns. Pairs of peptides that have been typically difficult to separate, can be resolved on this stationary phase.

Use our convenient Price Builder tool to get prices and part numbers.