Valve, Replacement, GilAir-3/5, BDX-2 Back Catalog number: 201320-40 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 385-0112-01 Sheath Air Purge Flow Filter for Nephelometer Price on request 385-0117-01 Tri-pod mounting bracket for Nephelometer (Tri-pod not included) Price on request SC-7 Tedlar Bag (12.0L) Price on request