Filter inside low flow modules 800518 & 800519 Back Catalog number: 201119 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 811-0902-EU-R Five Station Basic Dock 100-240Vac, 50-60 Hz, Euro Price on request 401205-R Adapter for 1-4” to 1-8” ID tubing Price on request