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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: STA-612
Chloroform-free organic extraction method
Extract lipids from plasma, serum, or cultured cells
Extraction into upper organic phase is amenable to high-throughput applications
Catalog Number: MET-5011
Isolates lipid droplets from cells or tissues
Uses a simple gradient centrifugation protocol
No ultracentrifugation required
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…