Go-Cal Dampening Module Back Catalog number: 811-9917-05 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-1709-01-R Gilibrator 3, Standard Flow Dry Cell (Flow Range 50 - 5,000 cc/min) Price on request 385-0113-01 Filter Cap, Replacement for Nephelometer Price on request 811-9913-01 Challenger O-Ring Replacement Kit Price on request