Grade "A" PMO: what dairy plant inspectors check
The PMO is a model your state adopts. It sets how often your plant is inspected, the pasteurization minimums and tanker drug residue testing before processing.
In Short
- Milk plants: inspected at least every three months.
- Tankers tested for drug residues before processing.
- Charts and tests linked to the lots they cover.
The Dairy & Chilled Manufacturing Guide
Every tank traced. Every chilled pack accounted for.
- Which rules apply
- Tanks, packs and cold chain
- Decide, trace, recall
We ask for your name and email so we can handle this request. The full guide then opens on this site, ready to translate, print or save. Privacy policy. Practical orientation, not legal advice; your quality unit decides which rules apply.
UltimateFree guide
The Dairy & Chilled Manufacturing Guide
Every tank traced. Every chilled pack accounted for.
The Grade "A" Pasteurized Milk Ordinance (PMO) is a model ordinance FDA recommends to states. States adopt it, and it is the standard used in the state and FDA program that certifies Interstate Milk Shippers. FDA's model documents page lists the 2025 PMO. Sources checked 3 Oct 2026.
Who sets the rules, and who inspects
The PMO is a model: your state regulatory agency adopts it and permits your plant. Changes are agreed at the National Conference on Interstate Milk Shipments (NCIMS) and published by FDA.
More on who sets the rules, and who inspects
Listing on the Interstate Milk Shippers list depends on ratings by FDA-certified state rating officers. Check which PMO edition your state has adopted, because adoption can lag the latest FDA posting.
How often a plant is inspected
Section 5 of the 2025 PMO asks the regulatory agency to inspect each milk plant and receiving station at least once every three months. Dairy farms are inspected at least once every six months, unless a performance-based farm system applies.
Common gap. Preparing records only for the visit; the PMO expects them to be right every day.
Which inspection rule applies?
Pick a facility type (2025 PMO, Section 5).
- Also receiving and transfer stations.
More on how often a plant is inspected
Plants in the NCIMS voluntary HACCP Program are audited under Appendix K instead. Aseptic and retort systems have their own arrangements, including FDA low-acid canned food oversight.
Pasteurization: time, temperature and the record
The PMO sets minimum combinations, for example 63°C (145°F) for 30 minutes for batch (vat) pasteurization and 72°C (161°F) for 15 seconds for continuous HTST. Add 3°C (5°F) when fat is 10% or more, total solids are 18% or more, or sweeteners are added.
More on pasteurization: time, temperature and the record
Inspectors compare recording charts and equipment tests with those rules. Keep chart review, diversions and equipment tests linked to the product lots they cover.
Drug Residue Testing Before Processing
Appendix N requires bulk milk pickup tankers to be tested for drug residues, and testing must be completed before the milk is processed. Positive screening results are confirmed using methods accepted under NCIMS.
Worked example: a tanker that is not processed
- 05:10Tanker T-0412 arrives; sample taken and load recorded as pendingReceiving
- 05:35Drug residue screen positive; milk kept out of the silosLicensed analyst
- 06:20Confirmation run with an accepted methodLaboratory
- 07:05Load rejected and notifications made as your state requiresPlant manager
More on drug Residue Testing Before Processing
A workable record links each tanker, its sample, the method, the result, and the person who accepted or rejected the load.
Trace, hold and recall
Grade "A" products are also foods under FDA rules, so recall planning and any applicable FSMA 204 traceability records sit alongside the PMO. FSMA 204's Food Traceability List includes some cheeses (other than hard cheeses); check the list for each product rather than assuming.
More on trace, hold and recall
The practical test is speed: from one tanker or silo, can you name every finished lot it went into and where each lot shipped?
Questions
Does the PMO cover every dairy product?
No. It covers Grade "A" milk and milk products as defined in the edition your state has adopted. Many cheeses, butter and other manufactured dairy products fall under other state and federal rules, including FDA's 21 CFR 117.
How often will a regulator inspect our plant?
Under Section 5 of the 2025 PMO, at least once every three months for milk plants and receiving stations, unless the plant is in the NCIMS voluntary HACCP Program, where Appendix K audits apply instead.
Must every tanker be tested before we process the milk?
Appendix N requires drug residue testing of bulk milk pickup tankers to be completed before the milk is processed, with positives confirmed by NCIMS-accepted methods.
Can V5 replace our pasteurizer recording chart?
No. V5 does not control or certify pasteurization equipment. It keeps receiving records, checks, holds, lab results, sensor readings where configured and lot trace alongside the records your regulator requires.
Practical orientation, not legal advice. Rules differ by jurisdiction; your quality and compliance team decides what applies.
