WATERS MICROMASS ZQ 2000 MASS SPEC PART BOC EDWARDS EXT 200/200H 24V TURBOMOLECULAR PUMP. The Edwards EXT 200/200H 24V turbo molecular pump inlet is LF 100 with a ISO KF-25 exhaust foreline flange. Edwards EXT 200/200H 24V turbo molecular high vacuum pumps have a pumping speed of 200 liters per second (l/s).