亚洲精品成人区在线观看,7777久久亚洲中文字幕蜜桃,色综合久久久久久久久五月,国产乱妇无乱码大黄aa片

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