What ASTA cleanliness actually specifies

Every serious spice supplier will tell you their material is ASTA clean. It is worth knowing exactly what that sentence claims, because it claims less than most buyers assume and something more useful than they expect.

What the specification is for

ASTA publishes Cleanliness Specifications for Spices, Seeds and Herbs. They are limits on the physical contamination a natural agricultural product carries: insect fragments, whole insects, rodent hair, mammalian excreta, and the general category of foreign matter. Each is given as a maximum, by spice.

They exist because a field crop is not a sterile input and never will be. The specification is an agreement about how much of the field is acceptable in the jar.

How it relates to FDA

This is the part that matters. The specifications were written to meet or exceed the FDA's Defect Action Levels. FDA sets the point at which a food is considered adulterated on physical defects; ASTA sits at or inside that line.

So a lot certified to ASTA cleanliness is, on those specific measures, a lot inside the federal limit. That is a real assurance and it is the reason the specification is quoted so often.

What it does not tell you

Three things, and every one of them has caused somebody a bad year.

It is not a microbial standard. Cleanliness is about physical defects. Salmonella is a separate hazard with a separate control, and a lot can be clean and still be a pathogen risk.

It is not a quality standard. Volatile oil, color and origin are not in it. A lot can be clean and weak.

It is not a guarantee of authenticity. Adulteration with the wrong material entirely is a different failure and cleanliness limits will not catch it.

Using it as a buyer

Ask for it in writing and treat it as the floor it is. Then ask separately for the volatile oil figure, separately for the treatment method, and separately for origin. Four questions, four answers, and a supplier who can only answer the first is telling you something.

References