1.5.99.4 6.8 - assay at 392440, 392543 1.5.99.4 7 - acceptor pseudoazurin 763949 1.5.99.4 7.4 - assay at 392541 1.5.99.4 7.5 - assay at 392537, 392540 1.5.99.4 7.6 8.2 sodium diphosphate buffer 392538 1.5.99.4 7.9 - assay at 392538 1.5.99.4 8.6 9 Tris chloride or Tris phosphate buffer 392538