Endotoxin level is < 0.1 ng/ug of protein (< 1 EU/ug).
Determined by its ability to chemoattract human monocytes using a concentration range of 0.01-1.0 ug/ml.
Activity assay SDS-PAGE The optimal working dilution should be determined by the end user.
Lyophilized from 5 mM Sodium Phosphate (pH 7.0, 0.1 mM Calcium Chloride).
Store at -20°C. Reconstitute in water to a concentration of 0.5-1.0 mg/mL. Do not vortex. For extended storage, it is recommended to further dilute in buffer containing carrier protein (e.g. 0.1% BSA) and store in aliquots at -20°C to -80°C is recommended.