97碰对免费精品_亚洲精品乱码免费精品乱码免费精品乱码免费乱码竞聘_国产又大又粗又黄的视频_五月丁香在线观看_91丝袜精品久久久久久无码人妻_久久夜色精品国产噜噜_国产精品亚洲第一区二区三区

HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) is a zwitterionic organic chemical buffering agent. HEPES is widely used in cell culture, largely because it is better at maintaining physiological pH despite changes in carbon dioxide concentrati

1 M, pH 7.0-7.6, sterile-filtered, BioReagent, suitable for cell culture.$nHEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) is a zwitterionic organic chemical buffering agent. HEPES is widely used in cell culture, largely because it is better at