Ethanolic bromothymol blue gives molar L/S ratios.
D000653:Amniotic Fluid / Q000032:analysis*; D001979:Bromthymol Blue; D002845:Chromatography; D006801:Humans; D010710:Phosphates; D010713:Phosphatidylcholines / Q000032:analysis*; D013109:Sphingomyelins / Q000032:analysis*; D013194:Staining and Labeling; D013943:Thymol / Q000031:analogs & derivatives
D010710:Phosphates; D010713:Phosphatidylcholines; D013109:Sphingomyelins; D013943:Thymol; D001979:Bromthymol Blue