Article by Pnut King

What Peanut Specifications Should Buyers Check Before Placing a Bulk Order

Published on 09/18/2026 in Peanut News

A quotation with a low price and the word “quality” attached to it doesn't tell a buyer much. What actually determines whether a peanut shipment works for a production line is the specification behind it — the exact numbers that define what's acceptable and what isn't. Manufacturers who skip this step, or accept a supplier's general description instead of written figures, are the ones most likely to receive a container that technically matches what was discussed but doesn't work once it reaches the plant. Here's what should be defined in writing before a bulk peanut order is placed.

Peanut Type and Variety

Peanuts aren't interchangeable by name alone. Runner, Virginia, Spanish, and Valencia types differ in kernel shape, oil content, and flavor profile, and each suits different end uses. A peanut butter producer looking for a smooth, consistent grind needs a different type than a confectioner using whole kernels for visible inclusion in a bar or coating. State the variety and origin explicitly rather than leaving it to the supplier's default stock, since substituting a similar-looking type can change texture and roasting behavior even if the peanuts pass a visual check.

Kernel Size and Count

Kernel size is usually expressed as a count per ounce or per 100 grams, and it directly affects roasting time, blanching yield, and finished-product appearance. A snack producer coating whole kernels needs a tight size range for visual consistency, while a paste or butter manufacturer has more flexibility since the kernels are ground. Define the count range you need and the tolerance for kernels outside that range, rather than accepting “large” or “extra-large” as a description without numbers attached.

Raw, Blanched, or Roasted

Confirm whether the order is for raw kernels, blanched (skin removed), or roasted, and to what degree. This affects both the price and what processing the buyer still needs to do in-house. If blanching is required, ask what blanching method the supplier uses and what skin-removal rate to expect, since a batch with a high percentage of unblanched or partially blanched kernels creates extra sorting work on the receiving end.

Moisture Content

Moisture affects both shelf stability and processing behavior. Peanuts that are too wet are more prone to mold growth and aflatoxin development during storage and transit; peanuts that are too dry can affect roasting and grinding characteristics. Set a maximum moisture percentage in the specification and ask how the supplier measures it — at harvest, after drying, or at the point of loading, since moisture can shift during storage if conditions aren't controlled.

Foreign Material and Admixture Limits

Foreign material — shell fragments, stones, stems, dust, or other crop material — should have a stated maximum tolerance, typically expressed as a percentage by weight. This isn't just a cosmetic issue: foreign material can damage processing equipment and, depending on the type of contaminant, raise food-safety concerns. Ask how the supplier's cleaning line removes foreign material and whether that figure is checked on every lot or only periodically.

Damaged, Discolored, and Split Kernels

Set limits for damaged, split, shriveled, and discolored kernels as a percentage of the sample. These figures affect both yield and appearance in the finished product, and they're often where a shipment quietly falls short of what a photo or written description suggested. A written tolerance gives both sides a clear basis for accepting or rejecting a lot, rather than relying on a subjective judgment call after the container has already arrived.

Oil Content and Free Fatty Acid

For buyers producing peanut oil or peanut butter, oil content and free fatty acid (FFA) level are worth specifying directly, since they affect yield and shelf life. A rising FFA level can indicate the peanuts have been stored too long or under poor conditions before shipment. This is a more technical figure than most of the other specifications, so it's worth confirming whether the supplier tests for it routinely or only on request.

Aflatoxin and Other Food-Safety Limits

Aflatoxin testing deserves its own line in the specification rather than being folded into a general quality statement. State the maximum acceptable level for your destination market and intended use, and ask for a Certificate of Analysis tied to the specific lot being shipped — not a general reference document. Depending on the buyer and market, additional microbiological testing may also be relevant, and this should be agreed in advance rather than requested after the shipment has already left.

Packaging Specification

Packaging affects how well the peanuts hold their specification during transit. Confirm bag type and size, whether an inner liner is used for moisture protection, net weight per unit, and labeling requirements. For container shipments, also confirm how the cargo will be loaded and whether any additional protection against condensation is used, since moisture picked up in transit can undo a shipment that met specification at the point of loading.

Tie the Specification to Documentation

A specification only has value if it's checked against something. Confirm that the sample provided during evaluation reflects the same specification that will apply to the commercial shipment, and that the COA accompanying the shipment corresponds to the actual lot being delivered rather than a standard template. Where the order size justifies it, an independent inspection before loading adds a further check that doesn't depend solely on the supplier's own reporting.

Final Point

A peanut specification isn't paperwork for its own sake — it's the document both sides can point to when a shipment needs to be accepted, questioned, or rejected. Buyers who define variety, size, moisture, foreign material limits, food-safety testing, and packaging in writing, and who confirm that documentation ties back to the actual lot shipped, are in a far stronger position than those relying on a supplier's general description. The specification is what turns “good quality peanuts” into something that can actually be verified.

Frequently Asked Questions

1. What is the most important peanut specification for food manufacturers?

There's no single most important figure — moisture, foreign material, kernel size, and aflatoxin limits all matter for different reasons. The specification should reflect what actually affects your production process and destination market requirements.

2. How is peanut kernel size measured?

Kernel size is typically expressed as a count per ounce or per 100 grams. A tighter count range gives more consistent roasting and appearance, which matters most for products where whole kernels are visible.

3. What moisture level is acceptable for bulk peanut shipments?

Acceptable moisture depends on the intended use and storage conditions, and should be agreed with the supplier in the specification rather than assumed. Excess moisture increases the risk of mold growth and aflatoxin development during transit and storage.

4. Why does free fatty acid (FFA) level matter for peanut buyers?

FFA level is a useful indicator for buyers producing peanut oil or peanut butter, since a rising FFA level can point to peanuts that were stored too long or under poor conditions. It affects both yield and shelf life of the finished product.

5. Should the specification match the sample and the Certificate of Analysis?

Yes. A sample and a COA are only useful if they reflect the actual lot being shipped. Confirm this explicitly with the supplier rather than assuming a sample approval automatically applies to every future shipment.