api 5000The API 5000™ LCMSMS System is one of the most sensitive triple quadrupole mass spectrometers for complex bioanalytical samples.Beware, some suppliers and manufacturers supply normal A105N 36K material flanges stamped as 3,000 or 5,000, these interconnect with API sizes (example a 2 ANSI A105 1500 class flange rated at 3,700 psi CWP is the same as