api 5000The API 5000 system is desned for quantitative analysis of small molecules. This application involves measurement of specific molecular weht compounds, usually a drug or metabolite in*Tolerances and ring gaskets are according to API 6A. Materials for API 6A Type 6B 5000 psi(34.5 MPa) Weld Neck RTJ Flange, API 6A 6B Weld Neck