Writing a chemical bid specification a public buyer can enforce

The invitation is the specification

Where a purchase is made under a Federal award, 2 CFR 200.320 describes sealed bidding in terms a chemical buyer should read closely. Sealed bids are feasible when “a complete, adequate, and realistic specification or purchase description is available,” the invitation for bids “must define the items or services with specific information, including any required specifications, for the bidder to properly respond,” and a firm-fixed-price contract “is awarded in writing to the lowest responsive bid and responsible bidder.” Factors such as discounts, transportation cost and life-cycle costs must be considered “when specified in the invitation for bids.” For local governments the invitation must be publicly advertised and bids opened publicly, and the recipient “must document and provide a justification for all bids it rejects.”

Read together, those sentences put the whole weight of a chemical purchase on the invitation. A requirement that is not written into it is not one a bidder was asked to meet, a delivery cost that is not named as a factor is not part of the comparison, and a rejection needs a reason that can be traced to the document. A purchase that is not made under a Federal award is governed by state and local procurement law instead, which was not surveyed for this guide. Nothing here is legal advice, and which procurement rules govern a purchase is for the agency’s procurement officer and counsel.

“Or equal” is judged on what you wrote down

2 CFR 200.319(c)(6) names, among situations that may restrict competition, “Specifying only a ‘brand name’ product instead of allowing ‘an equal’ product to be offered and describing the performance or other relevant requirements of the procurement.” Paragraph (d)(2) sets the positive rule: solicitations must “Incorporate a clear and accurate description of the technical requirements,” and “when necessary, the description must provide minimum essential characteristics and standards to which the property, equipment, or service must conform.” Where that is impractical, a “brand name or equivalent” description may be used, and “the specific features of the named brand must be clearly stated.” Paragraph (e) requires any prequalified list to be current and not to “preclude potential bidders from qualifying during the solicitation period.”

For a treatment chemical the features that matter are rarely a brand. They are the substance and its identifiers, the concentration with its basis, reference temperature and method, the certification of the product offered for the function it will serve where the governing rule requires one, the container and transfer connection, and the lot documents. Write each as a characteristic an equal must meet and state how it will be judged: a document submitted with the bid, a lookup the agency performs, or a test on delivery. A trade name with no stated characteristics leaves the evaluator with nothing to compare an equal against, and a characteristic with no method of evaluation invites an argument after bid opening.

The state rule says what “certified” has to mean

In Texas, 30 TAC §290.42(j) reads: “All chemicals and any additional or replacement process media used in treatment of water supplied by public water systems must conform to ANSI/NSF Standard 60 for Drinking Water Treatment Chemicals and ANSI/NSF Standard 61 for Drinking Water System Components. Conformance with these standards must be obtained by certification of the product by an organization accredited by ANSI.” Two things are fixed there: the object of certification is the product, and the certifier is defined by accreditation rather than named. The same section, at subsection (f)(1), requires bulk storage at the plant adequate for “at least a 15-day supply” of all chemicals needed to comply with treatment technique and MCL requirements, based on the plant’s design capacity, and a label and a contents indicator on every bulk tank and day tank. Tank size and delivery frequency are therefore design facts a solicitation has to agree with.

The Ten States Standards take a softer line that a reviewing authority then adopts and adjusts. The 2022 edition, §2.23, provides that chemicals “shall be approved by the reviewing authority or be certified for compliance with ANSI/NSF Standards 60 or 61,” and §5.6.2 that “Chemicals shall comply with the appropriate ANSI/AWWA standards and/or ANSI/NSF Standard 60.” The document describes itself as a guide whose use “must be adjusted” to differing state statutes and procedures. Which formulation binds a particular system is the reviewing authority’s decision, and the specification should cite that requirement rather than a generic phrase such as “NSF approved.”

Some rules pin an edition, and name the exception

California’s 22 CCR §64590 is more specific still. No chemical or product may be added to drinking water by a water supplier “unless the chemical or product is certified as meeting the specifications of NSF International/American National Standard Institute (NSF/ANSI) 60-2005,” which the section incorporates by reference, and certification must come from an ANSI-accredited product certification organization whose system includes at a minimum annual product testing, annual facility inspections, annual quality assurance and quality control review, annual manufacturing practice reviews and annual chemical stock inspections. The rule names an edition, and the edition is from 2005; the certifier’s own listings are now headed NSF/ANSI/CAN 60. A specification that cites the standard should say whether it means the edition the rule incorporates or a current one, and why.

Section 64593 then states the only route for an uncertified product: it may be used “if the chemical, material or product is in the process of being tested and certified and there are no certified alternatives,” and only after the water supplier gives the State Board the need, the date of submission for testing, the name of the accredited certifier and a statement that certified alternatives are not available. That is a water supplier’s notice to its regulator, not a supplier’s assurance, and no bid document can substitute for it. The text quoted here is from the State Water Board’s August 2026 staff compilation, which states that the published California Code of Regulations is the only official text.

A listing is a lookup of one product at one facility

NSF’s public search for drinking water treatment chemicals shows what a certification record contains. Each entry names a company and a facility location, then, under a chemical name, a trade designation, a product function such as Fluoridation or Chloramination, and a maximum use expressed in mg/L. On September 14, 2026 the results stated they were “current as of Monday, September 14, 2026 at 12:15 a.m. Eastern Time” and asked readers to contact NSF to confirm the status of any listing, and many entries carried the note: “Only products bearing the NSF Mark on the product, product packaging, and/or documentation shipped with the product are Certified.”

So the verification a public buyer can perform is specific: this company, this facility, this trade designation, for this function, with a maximum use the design engineer has compared against the system’s own design maximum — checked on a stated date at bid evaluation, and the certification mark checked again on the delivered product or its shipping documents. A maximum use is a certification ceiling for one product, not a dose or a target, and this library reproduces none. The search is one certifier’s directory, while a rule such as Texas’s defines the certifier by accreditation. Chemical-name searches can also mislead, because one substance can sit under several names; the next guide in this collection shows three menu entries for the same acid. Nothing in this library states or implies that any Alliance product is certified to NSF/ANSI/CAN 60 or appears in any listing, and none should be inferred from a product name, a grade or a collection.

Write the delivery and the documents into the bid

The Ten States Standards set out, in §5.6.1, that chemical shipping containers “shall be fully labeled,” with the chemical name, the purity and concentration, and the supplier’s name and address, and in §5.6.3 that “provisions may be required for assay of chemicals delivered.” A solicitation can make both concrete: the label content, the container and the transfer connection the plant accepts, who samples a delivery and where, which assay is run by which method, and who dispositions a result before the material goes into a tank. The winter-maintenance guide in this collection shows a specification that writes the bill of lading, the lot number and the right to sample before unloading into the bid itself.

Name the lot documents as characteristics too. Alliance sends a Certificate of Analysis when a customer asks, at no charge; a solicitation should say which document it wants and what it must report — analytes, methods, units and reporting limits — because a sample certificate describes what a product has generally looked like while a lot certificate reports results for the material shipped. A sample COA is not a lot certificate. How to read the results on one is covered in the laboratory and pharmaceutical research collection under “Reading a lot certificate for a monograph product,” and the limits of any certificate in the metal finishing collection under “What a certificate of analysis can and cannot tell you.” Why a certification, a consensus commodity standard and a limit on treated water are three different requirements is set out in the water and wastewater treatment collection under “Which hypochlorite standard applies, and what you can read.” None of that is repeated here.

Federal funding can add clauses the chemistry does not answer

2 CFR part 184 implements the Build America, Buy America preference for Federal financial assistance. Its policy is that no award funds for an infrastructure project may be obligated “unless all of the iron, steel, manufactured products, and construction materials incorporated into the project are produced in the United States.” Infrastructure includes, at a minimum, “water systems, including drinking water and wastewater systems,” and the preference “must be included in all subawards, contracts, and purchase orders for the work performed, or products supplied under the Federal award.” Section 184.4(e)(2) adds that an article, material or supply “may not fall under any of the categories,” and that classification is made “based on its status at the time it is brought to the work site for incorporation into an infrastructure project.”

The text read for this guide does not name treatment or de-icing chemicals. Whether a particular chemical purchase falls within the preference is a determination for the awarding agency and the recipient, not for a supplier and not for this library, and a solicitation that carries the clause should say how it will be applied to the item being bought. This is source-based editorial guidance, no original testing was performed for it, and independent specialist review is pending. Nothing here states that any Alliance product is suitable, approved, certified or recommended for any public-water, public-works or other application.

• Which rule governs this purchase and this system, and which edition of which standard does it incorporate?
• For each characteristic an equal must meet, what document or test will the evaluator use, and when?
• Which company, facility, trade designation, function and maximum use were looked up, on what date, and by whom?
• What must the label, the bill of lading and the lot certificate carry, and who may sample before unloading?

Requirement → evidence → decision boundary

An editorial checklist for your review—not a table of product specifications.

Revision record

1.0 · September 14, 2026 — Source-based editorial edition. No original testing or product qualification is claimed.

For utilities, public works departments, public agencies and their procurement officers writing solicitations for treatment, fluoridation, chloramination and winter-maintenance chemistry. This collection does not interpret procurement law for any agency, determine the certification, qualification or eligibility of any product, set a dose, feed rate, chlorine-to-ammonia ratio, fluoride level or application rate, take a position on community water fluoridation, or make a compliance, permit, transport or waste determination.