Application: Phosphate-citrate buffer with sodium perborate is use as a substrate buffer in immunoassay systems utilizing the enzyme horseradish peroxidase.
Reconstitution: Empty the contents of one capsule in 100 mL of deionized water and dissolve. The contents of one capsule yields 0.05 M phosphate-citrate buffer, containing 0.03% sodium perborate as a substitute for H2O2, pH 5.0 at 25-á°C.