Sodium-casein, min. 89 % lactoprotein, 500 g, plastic

Blocking reagent from milk protein, suitable for Western and ELISA. High blocking efficiency based on the amount of small protein and peptide species (<10 kD). Can be used with PBS/PBST and TBS/TBST as well as all standard colorimetric and fluorescent detection systems. Not suitable for PVDF-membranes, biotin/streptavidin mediated labelling (milk contains biotin), and detection of phospho-proteins. Tip: Prepare stock solution in 0.3 M NaOH (37 °C), titrate to pH 7.4 (HCl).