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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: CBA-5020, CBA-5021
Proprietary contraction plate eliminates release step
Uses 3D collagen matrix to measure changes in collagen gel size
Includes optional cell contraction inhibitor
Catalog Number: MET-5147, MET-5148
Detects guanine levels as low as 3.1 µM
Compatible with cell or tissue lysates, serum, plasma, or urine
Guanine standard included