Gelofusine Veterinary 4 % w/v Solution for Infusion Presentation Sterile 4 % w/v succinylated Gelatin (modified fluid Gelatin) in Saline. Gelatin 40.0 g/l Sodium 154 mmol/l Chloride 120 mmol/l Av Mw 30,000 Av Mn 22,600 pH 7.4 ± 0.3 Relative viscosity at 37°C 1.9 Iso-electric point pH 4.5 ± 0.3 Colloid osmotic pressure 453 mm H2O Gel point 0°C Osmolarity 274 mOsm/l Description: Gelofusine is prepared by hydrolysis and succinylation of bovine collagen.