B3000342 UNGROOVED PYROCOATED TUBES PK/20 AA B3000641 Standard THGA Graphite Tubes PK/5 AA B3000653 Std THGA Graphite Tubes w/end cap - PK/5 AA B3000655 Std THGA Graphite Tubes w/End Cap pkg.20 AA B3001253 groove pipe 20ST. packed AA B3001254 GROOVED PYROCOATED TUBES BX/20 AA B3001256 PYROLYTIC GRAPHITE PLATFORMS 20 AA B3001262 GRAPHITE TUBE WITH PLATFORM PK/5 AA B3001264 PYROCOATED GRAPHITE TUBE HGA PK/20 AA B0504033 Standard THGA Graphite PE Tubes pkg.20 AA B0504035 THGA CONTACT CYLINDERS -1 PAIR AA B0504036 THGA CONTACT CYLINDERS PK/5 AA B0504047 PRECONCENTRATION-COL. C-18 PK/10 AA B0504048 COLUMN FIAS PRECON XAD8 (10) AA B0504079 GAS DIFFUSION MEMBRANES PK/10 AA B0505057 TUBES-PYRO-W/FK PLATFORMS PK/20 AA