Vial | Cap | Content | Composition |
---|---|---|---|
1 NAB R1 | white | 4 vials, 50 tests each | Reagent 1 (R1): TRIS, 450 mmol/L, pH 7.5; β-galactosidase rec. from E. coli; BSA; EGTA; cryptand; preservative; stabilizer. |
2 NAB SR | black | 4 vials, 50 tests each | Start Reagent (SR): TRIS, 50 mmol/L, pH 8.1; 2-nitrophenyl-β-D-galactopyranoside; stabilizer. |