...900 µL PBS in a microfuge tube and vortex. 1 ng/µL : Add 450 µL of 2 ng/µL stock into 450 uL PBS in a microfuge... µL PBS in a microfuge tube and vortex. 0.25 ng/µL : Add 450 µL of 0.5 ng/µL stock into 450 µL PBS in ...ng/µL stock into 450 µL PBS in a microfuge tube and vortex. 0 ng/µL : 450 µL PBS only. Pipette 50 µL into....05% Tween-20 in PBS) as follows: Pipette 0.5 mL of Tween-20 to into 999.5 mL 1X PBS Cap the bottle and...blocking buffer (1% BSA in PBS) as follows: Add 250 mg of BSA to 25 mL of PBS. Cap the tube and invert ...dilution buffer (0.1% BSA in PBS) as follows: Dilute 50 mg BSA into 50 mL PBS . Cap the tube and invert ...89130-898 1 L polystyrene bottle, Corning 430518 PBS, 1X pH 7.4, VWR 45000-446 TMB (3,3',5,5'-tetramethyl...