api 5000Api 6a Wn Flanges applications including pressure classes – 720 psi and 960 psi, the API specified no changes to the ASA B16.5 Standard, using the 300 lb. and 400 lb. flangesoffers new and used SCIEX API 5000 triple quadrupole mass spectrometers for quantitative analysis in complex matrices. Find listings, prices, and repair services for SCIEX API 5000 and related products.