Sodium Bisulfite-40%, NaHSO3

The City of Mesa issued a requirements contract for the supply of Sodium Bisulfite‑40 % (NaHSO₃) in both bulk (hose) and 4 700‑gallon tote formats. Four vendors were awarded portions of the work, with primary and secondary allocations for bulk and tote deliveries. The contract runs for three years, may be renewed up to two additional one‑year terms, and includes a short month‑to‑month extension option. Pricing is submitted on a unit‑price basis per gallon and per tote, with the City applying a Transportation Privilege Tax (TPT) deduction. Payments are Net‑30 after invoice receipt. • Scope: Provide chemical grade sodium bisulfite (38‑40 % concentration) meeting specific purity, pH, and heavy‑metal limits. • Delivery: Monday‑Friday, 7:30 a.m.–2:00 p.m. to Mesa water‑treatment facilities, with required PPE and documentation at receipt. • Award: Four vendors share the contract – Catalynt Solutions (primary bulk), Thatcher Company (secondary bulk), Univar Solutions (primary tote), Hills Brothers (secondary tote).