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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-5054, MET-5055
Measure only free L-amino acids (except glycine); does not detect peptides or proteins
Detection sensitivity limit of 62.5 µM (colorimetric) or 6.25 µM (fluorometric)
Suitable for use with lysates, serum, plasma, urine, and food samples
L-Alanine standard included
Catalog Number: MET-5086, MET-5181
Detects as low as 12.5 µM ammonia (colorimetric) or 6.25 µM ammonia (fluorometric).
Measures ammonia levels within urine, cell lysates, or tissue homogenates
Provides sufficient reagents to perform up to 100 assays (colorimetric) or 200 assays (fluorometric), including blanks, ammonia standards…