Invitation to Bid No. 2021-87 Rebidding for the Procurement of Chromogenic Enzyme Reagent with Define Substrate technology per SMEWW 23rd edition standard methods, RT testing for total coliform & E. Coli in water for 18 hours based on the detection of B-D galactosidase & B-glucoronidase enzyme using chromogenic & fluorogenic substrate in just 18 hours, PNSDW 2017 standard for 100ml H2O samples, set of reagent w/ specimen bottle food for 200 samples, inclusive of reagent bottle: 120 ml, Shrink-banded vessels line with sodium thiosulfate packs of 200 sets