為實驗者效勞
Bromophenol blue, indicator CAS:115-39-9
5G
Diisopropanolamine CAS: 110-97-4
Dibutylamine CAS: 111-92-2
L-Histidine hydrochloride 1-hydrate 98.5%, extra pure, Ph Eur, BP
CAS:5934-29-2
L(+)-Tartaric acid
CAS :87-69-4