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Catalog Number: VPK-5004, VPK-5004-5
Measures the Hepatitis B surface antigen (HBsAg) in purified virus or unpurified viral supernatant
Detection limit of approximately 1 ng/ml
HBsAg standard included
Video: Color Development in an ELISA
Catalog Number: MET-5056
Measures only free branched chain amino acids; does not detect peptides or proteins
Detection sensitivity limit of 15.6 µM
Suitable for use with lysates, serum, plasma, urine, and food samples
L-Leucine standard included
Catalog Number: MET-5093
Detection sensitivity limit of 7.8 µM in a standard colorimetric plate reader
Suitable for use with lysates, serum, plasma, urine, cell lysates and culture supernatants
L-Alanine standard included
NOTE: Each sample replicate requires 2 assays for proper data calculation.