Acidified foods scheduled process: what a US specialty food maker files with FDA

Q: Who can write a scheduled process?

A qualified [process authority](/what-licenses-does-a-specialty-food-business-need-in-2027), usually a food scientist with acidified foods experience. Many university extension labs provide this service.

What to take away

Acidified foods scheduled process FDA filing is a notification, not an approval. You file Form FDA 2541a with the scheduled process data from a qualified process authority.
State agriculture and health departments can review the same documents, and FDA can inspect the records without prior notice.
A compliant label carries the food name, net quantity, ingredients, and the manufacturer or distributor name and place of business.
Skipping the filing makes the product adulterated under federal law. FDA can detain product or request a recall, and state inspectors can issue a stop-sale order.

A US specialty food maker acidifies vegetables, sauces, relishes, or pickles to a pH of 4.6 or below, and the food has a water activity above 0.85.

Who has jurisdiction

FDA has national jurisdiction over acidified foods through the acidified foods regulations in 21 CFR Part 114 and the Federal Food, Drug, and Cosmetic Act. A state department of agriculture or public health can enforce the same product standards under state law. A process authority, often a university extension lab or private consultant, establishes the scheduled process before filing. FDA does not issue a permit or approval; it accepts the filing and can inspect later. For the acidified food requirements, see 21 CFR Part 114.

Who Does What

FDA

Main role: Accepts 2541a
Issues permit: No
Inspects: Yes
Sets pH limits: No

State process authority

Main role: Sets process
Issues permit: No
Inspects: No
Sets pH limits: Yes

State inspector

Main role: Checks records
Issues permit: No
Inspects: Yes
Sets pH limits: No

Authority	What it does
FDA	Accepts Form FDA 2541a filings and inspects acidified food plants.
State process authority	Establishes or reviews the scheduled process and critical limits.
State inspector	Checks the label, records, and pH testing logs.

What you file with FDA

Before filing, the facility must complete FDA food establishment registration, which is not the same as the scheduled process. See FDA facility registration for that separate step. The scheduled process filing itself uses Form FDA 2541a for each acidified product. You file the process, not the formula, but you must list critical factors that affect safety: equilibrium pH, water activity, container type, and any heat treatment.

Acidified-food processors must also register each food canning establishment with FDA using Form FDA 2541. This Food Canning Establishment (FCE) registration is separate from general food facility registration. Under 21 CFR 108.25(c)(2), file the scheduled process for each acidified food and container size and type before packing.

Submit Form FDA 2541 and Form FDA 2541a electronically through FDA Industry Systems (FIS), using the Food Canning Establishment Registration and Process Filing module in FURLS. FDA assigns an FCE number to the establishment and a Submission Identifier (SID) to each process filing; retain these identifiers.

Form FDA 2541a identifies the product and container and provides the complete scheduled process established by the process authority. This includes the processing method and applicable process limits and critical factors, such as equilibrium pH, water activity, and heat-treatment parameters, along with any other critical factors for that product and process.

Filing Form 2541a

Process authority documents pH and water activity
File Form FDA 2541a per product
Re-file when formulation or process changes
Use filed process and record each lot

What a home operation may and may not do

Most state cottage food laws do not permit acidified foods with water activity above 0.85 because they require a scheduled process and commercial controls. A home operation may make and sell only foods allowed on its state list, such as certain baked goods or jams. It may not ship acidified foods across state lines without following 21 CFR Part 114 and using a licensed commercial facility. Check your state ag department before labeling anything as shelf-stable.

Records to keep

Keep these records for at least 3 years at the processing plant or at a retrievable location.

Under 21 CFR 114.100, keep records of examinations of raw materials, packaging materials, and finished products; processing and production records documenting the scheduled process and its critical-factor checks; and records of any deviations from the scheduled process and corrective actions taken.

Records to Keep 3 Years

Copy of filed Form FDA 2541a
Batch number, date, quantity
Actual and equilibrium pH readings
Corrective action notes

These records sit beside the food safety plan required under FSMA. The same operator can maintain both sets. See FSMA preventive controls for the checklist.

Labelling requirements

A compliant acidified food label carries the common or usual name of the food, net quantity, ingredient list, and the name and place of business of the manufacturer, packer, or distributor. The label does not need a separate acidified food phrase under 21 CFR 114, but it must meet FDA packaged food labeling rules. For the full label package, see nutrition labelling and allergen rules. FDA food labeling rules cover everything from ingredient order to health claims; find them at FDA food labeling.

The filing is not a paper exercise. Absent a valid scheduled process, any lot can be treated as unsafe and stopped at the state line.

What happens if you skip it

If you skip the scheduled process filing, the product is adulterated under section 402(a)(4) of the Federal Food, Drug, and Cosmetic Act. FDA can issue a warning letter, detain a shipment, or request a recall. State inspectors can also issue a stop-sale order that blocks sales until the filing is fixed. That order can sit on your inventory for weeks. If you also sell into Canada, the filing duty differs from US expectations; see cross-border packaged food sales.