modal3000This Model 3000 is in excellent condition and features an 18 barrel with a cylinder bore and a 2 34 chamber. The Smith & Wesson Model 3000 is a pump-action shotgun offered by Smith &Gonotec® Osmomat® Freezing Point Osmometer Model 3000 M D. The Gonotec® Osmomat® determines the total osmolality of aqueous solutions. The instrument requires very small