Certificate of analysis template for industrial chemicals

What is an industrial chemical certificate of analysis template for, and who uses it?

An industrial chemical certificate of analysis template is a fixed layout for the lot-specific document that reports a product's test results against its specification, issued by the supplier's quality control laboratory or a contracted laboratory. A certificate of analysis (CoA) is written for one lot, so the template has to make the lot, the tests, the limits and the results easy to compare.

Three groups use the template. The issuing laboratory fills it in when a lot is released. A distributor uses it when it passes the maker's results to a customer, or issues its own certificate. The receiving customer's incoming quality team reads it against its own specification before accepting the lot.

Chemical CoAs vary by product and by customer: a vendor guide notes that a customized CoA is issued for every customer, because requirements or specifications differ, and lists solids, pH, moisture and viscosity as common tests (Datacor, 2024). The pages that rank for this topic are a pharmaceutical form and a field list without a layout, a method column or a unit column. This template adds those columns, a specification revision and a rounding rule. The editable Word template and an Excel and CSV file of the results columns are at the end of this page.

What is the difference between an industrial CoA and a pharmaceutical GMP CoA?

The difference between an industrial CoA and a pharmaceutical good manufacturing practice (GMP) CoA is the source of its content: a GMP CoA follows a written guide, while an industrial CoA follows the customer's specification and purchase terms. No single regulation cited here sets the content of an industrial chemical CoA.

For active pharmaceutical ingredients, ICH Q7 recommends that a CoA give the product name, grade where appropriate, batch number, release date, the expiry date where one applies, and a retest date on the label, the CoA or both, plus each test with its acceptance limits and numerical results (ICH Q7, 2000, sections 11.41 and 11.42). It recommends that certificates be dated and signed by authorised personnel of the quality unit (ICH Q7, 2000, section 11.43). A US drug maker may accept a supplier's report of analysis in place of its own testing only if it runs at least one specific identity test and establishes the reliability of the supplier's analyses at appropriate intervals (21 CFR 211.84(d)(2), eCFR 2026).

Industrial sectors have their own document conventions. For metallic products, EN 10204:2004 defines inspection document types, from a declaration of compliance with the order (type 2.1) to an inspection certificate with results of specific inspection validated by an inspection representative independent of production (type 3.1), as summarized by Wermac (Wermac, accessed 2026). This template borrows the GMP structure as a checklist of fields, without any claim of GMP compliance.

Certificate of analysis template sections 1 to 3: identity, product and lot, recipient

Certificate of analysis template sections 1 to 3 identify the certificate, the product and lot, and the recipient and order, so that a reader can match the CoA to one delivery before reading any result.

The table below previews the fields of sections 1 to 3; the example values are illustrative.

The field that carries the most weight is the lot number, because every result on the certificate applies to that lot only.

Write the product name exactly as the order and the TDS give it, and add the code, since a receiving team matches the certificate to the order and the TDS by name and code. Keep the retest date even where no rule asks for it if the product has a shelf-life limit. The recipient line makes the certificate specific to one order; leave it blank only when the CoA is issued per lot for all customers. Quantity and packaging let the receiving team check that the certificate covers the whole delivery, which matters when one delivery holds drums from two lots and so needs two certificates.

Which test methods and units belong on a chemical CoA results table?

A chemical CoA results table needs, for each test, the method number with its edition, the unit, the specification limits with the specification revision, the result as reported, and whether the result conforms. Without the method and unit, a reader cannot compare the result with any other laboratory's.

The table below previews the columns of the results table; the example values are illustrative.

The deciding column is the method, because the same property measured by two methods can give two results.

ISO/IEC 17025:2017 lists identification of the method used, and the results with units of measurement where appropriate, among the minimum contents of a laboratory report (NIST, 2018). For standard methods, European Accreditation answered in March 2026 that the identification should include the full reference, code and year, because "the issued version/date of the standard method is part of the identification of the method" (European Accreditation, 2026). ISO/IEC 17025:2017 was last reviewed and confirmed in 2023 (ISO, 2023).

Give the unit in the unit column, not inside the result cell, and use the same unit as the limit. A result reported in one unit against a limit in another forces the reader to convert, and the conversion is where mistakes enter.

Certificate of analysis statement and approval section

The certificate of analysis statement and approval section states whether the lot conforms to the named specification revision, who approved the certificate, in what role, and on what date. It closes the CoA, so its wording has to match the results table above it.

A conformance statement names the specification and its revision, for example "Lot 26-1192 conforms to customer specification QS-12 revision C" (illustrative). Where a result is out of limits, the statement says so and names the test, rather than giving a general pass.

The table below previews the section 5 fields; the example values are illustrative.

The signatory line gives a name, a role and a date. ICH Q7 recommends that API certificates be dated and signed by authorised personnel of the quality unit (ICH Q7, 2000, section 11.43), and ISO/IEC 17025:2017 lists identification of the person or persons authorizing the report among its minimum contents (NIST, 2018). For metallic products, an EN 10204 type 3.1 certificate is validated by the maker's inspection representative who is independent of the production department (Wermac, accessed 2026). An industrial CoA has no single rule, so the template asks for a role outside production as the default.

Distributors who issue their own certificate should keep the link to the original. ICH Q7 recommends that a certificate issued by a repacker, agent or broker show the laboratory that performed the analysis and refer to the original batch certificate, with a copy attached (ICH Q7, 2000, section 11.44). The template has a field for the original certificate number for that reason.

How should a CoA state results that sit on the specification limit?

A CoA should state a result that sits on the specification limit by reporting it to the number of digits the method or specification sets, naming the rounding or comparison rule used, and showing the conformance decision that rule gives. The rule has to be agreed before the result exists.

ASTM E29-22 is a practice for indicating significant digits in specification limits and for using them to decide conformance, and a reference to it "is valid only when a choice of method has been indicated, that is, either absolute method or rounding method" (ASTM E29-22, 2022). In general terms, the rounding method rounds the result to the digits of the limit before the comparison, and the absolute method compares the unrounded result with the limit as written; the practice itself sets the detailed rules. E29 is intended for use where the applicable specification refers to it directly (ASTM E29-22, 2022), so name the rule the customer agreed.

An illustrative case shows why the choice matters. Against a water limit of 0.05 % maximum, a measured 0.054 % rounds to 0.05 % and conforms under the rounding method, but exceeds the limit under the absolute method (illustrative values).

ISO/IEC 17025:2017 adds a reporting rule for laboratories that make a statement of conformity: the report has to identify the decision rule applied (PJ Labs, 2019). A decision rule describes how measurement uncertainty is taken into account. The template has a field below the results table for the rounding method and decision rule, so a reader of a borderline result knows how the conformance column was decided.

How to fill in the CoA template, with an illustrative example

Fill in the CoA template from the customer's specification first and the laboratory results second, so the test list and limits are fixed before any result is entered. The example below is illustrative: the product, specification and values are invented.

1. Copy the tests, methods, units and limits from the specification revision the customer holds, and enter the revision in the results header.

2. Fill sections 1 to 3 from the batch record and the order: certificate number, lot, dates, quantity and recipient.

3. Enter each result as reported after the rounding stated for that test, in the unit of the limit.

4. Mark each result Y or N for conformance, using the rounding method and decision rule written below the table.

5. Write the conformance statement, then sign and date the certificate.

The table below shows an illustrative results extract for a hydraulic fluid lot, which decides whether the conformance statement can say the lot conforms.

In this illustrative case the acid number result of 0.12 mg KOH/g against a limit of 0.10 mg KOH/g maximum fails, so the statement names that test as out of limits instead of declaring conformance, and the lot goes to the issuer's nonconformance process (illustrative values).

What makes a customer reject a certificate of analysis?

A customer rejects a certificate of analysis when it cannot be matched to the delivered lot, does not follow the customer's specification, or does not show enough to judge a result. Many of these checks concern the document itself rather than an out-of-limit result.

Receiving teams check the lot or batch number on the certificate against the material physically received, and check the results against their own specification, since "a result within the supplier's limits can sit outside yours" (Kognitos, 2026). The same source notes that a certificate of conformance attests that a lot meets its specification without necessarily including the results, so it does not replace a CoA where results were requested (Kognitos, 2026).

The template's fields map to these checks. A missing method or unit fails the report contents ISO/IEC 17025:2017 lists (NIST, 2018). An undated or unsigned certificate fails the approval ICH Q7 recommends for API certificates (ICH Q7, 2000, section 11.43). A distributor's certificate that hides the original laboratory fails ICH Q7 section 11.44 in a GMP supply chain.

Buyers also test certificates over time. ICH Q7 recommends that reliability of certificates of analysis be checked at regular intervals, with full analyses on at least three batches before in-house testing is reduced (ICH Q7, 2000, section 7.31). Results that never vary across lots, or that cluster implausibly close to a limit, are worth investigating (Kognitos, 2026).

Where this certificate of analysis template does not fit

The certificate of analysis template on this page does not fit documents with their own required format, results that need a laboratory's full test report, or a certificate that states conformance without results. It is a layout for an industrial chemical lot, not a substitute for a quality system.

Use the format the governing rule or standard sets in three cases. An active pharmaceutical ingredient follows ICH Q7 and the maker's GMP system. A metallic product ordered with an EN 10204 document follows the type named in the order. A product sold under a regulation that prescribes a certificate format follows that regulation.

An accredited laboratory's test report under ISO/IEC 17025:2017 carries more than a CoA, such as clear identification of customer-supplied data and, for a sample the customer provided, a statement that the results apply to the sample as received (PJ Labs, 2019). When a customer asks for the laboratory report, send it as well as the CoA, not in place of it. A certificate of conformance, which states compliance without results, needs a shorter form.

The template also cannot make a result valid. The method, the calibration and the sampling stay with the laboratory's own procedures, and the illustrative values on this page are not limits for any product. Lubinpla's submission document check confirms that the lot and target on the CoA match what the recipient requires, using your own CoA, TDS and SDS files, and returns the gaps for your review before the package is sent.