Image: Number of D-lysine Hydrobromide Repeating Units * x=30 (poly-D-lysine hydrobromide, MW=6,300 Da) x=100 (poly-D-lysine hydrobromide, MW=21,000 Da) x=250 (poly-D-lysine hydrobromide, MW=52,000 Da) equivalent to MW=70-150 kDa by viscosity from other suppliers x=400 (poly-D-lysine hydrobromide, MW=84,000 Da) equivalent to MW=150-300 kDa by viscosity from other suppliers Pack Size * 100 mg, $180.00 500 mg, $720.00 1 g, $1,150.00 Description of Poly-D-lysine Hydrobromide: