DELFIA®; Research Buffer Set, 2x conc. by PerkinElmer, Inc.
The Research Buffer Set contains a protein- and detergent-free buffer and separate detergent and protein solutions. 250mL of 100mmol/L Tris buffered salt solution with DTPA, pH 7.75 (2x concentrate), 50mL 7.5% BSA solution, 2mL 2.5% detergent (Tween 40).
The BSA is DTPA purified and consequently free of heavy metals.