Teflon Bag, On-Off Valve (1.2L) Back Catalog number: TE-21 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 385-0117-01 Tri-pod mounting bracket for Nephelometer (Tri-pod Price on request 380-0035-01 Nephelometer Pump Assy, Replacement Price on request 811-9909-01 Inhalable Dust Sampler (100 µm Particle Cut at 2L Price on request