Supplier Aseptic Shoe Covers for Laboratories: Which Grade Does Your Lab Need?

A laboratory buyer searching for aseptic shoe covers is usually holding two documents that disagree. One is the room classification, written as an ISO class. The other is an older supplier sheet or drawing that still carries a class number from a standard withdrawn more than twenty years ago. Reconciling the two is the first step, because it decides which shoe cover is actually being specified.

• ISO 14644-1 classifies the air in the room, not the shoe cover, so it does not grade a garment.
• The United States withdrew its own cleanroom standard in 2001 and moved to the ISO series, but old class numbers survive on specifications.
• A shoe cover is gowning, not a licensed device, so the buying decision rests on fabric, sole and fit.
• Canadian documents normally quote the ISO class; US documents often quote both, which is where orders go wrong.

Which shoe cover grade does an ISO Class 7 laboratory need?

None, strictly speaking, and that is the point. The standard that laboratories use to describe a room, ISO 14644-1, sets particle concentration limits for air cleanliness. It does not assign a grade to a shoe cover, a gown or a hair covering.

The numbers are still what a buyer has to check, because they define the room the gowning procedure is written for.

So a spec sheet that asks for a class 1000 shoe cover for an ISO Class 6 room is asking for a non-shedding garment suitable for that room, not for a numbered article. Read the table above and the two documents line up.

Is the US class number still valid?

Not as a standard, but it is still in circulation. The [Institute of Environmental Sciences and Technology](https://www.iest.org/Standards-RPs/ISO-Standards/FED-STD-209E) records the cancellation of Federal Standard 209E, and the ISO 14644 series took over its class numbers. The US Food and Drug Administration recognises ISO 14644-1 as a consensus standard, listed under [recognition number 14-500](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfStandards/results.cfm?title=14644) for the second edition dated 2015-12-15.

That recognition matters commercially. A US supplier document written before or shortly after the change may quote a class 1000 room, and a Canadian laboratory reading it without the translation table may order a cover built for a different contamination level. The practical rule is to convert first and specify second.

How do Canada and the United States differ in practice?

Both countries now classify cleanrooms by the same ISO series, so the particle limits quoted in this article apply on both sides of the border. The difference is not in the science but in the paperwork.

The US side also carries a general PPE duty that a laboratory has to satisfy whatever the room classification says. [29 CFR 1910.132](https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.132) requires the employer to assess the workplace for hazards and to select and provide personal protective equipment on the basis of that assessment, which is where shoe covers, hair covering and eye protection sit for most laboratory work.

What should a laboratory tender actually ask for?

Because no standard grades the cover, the tender has to do it. Four lines cover almost every case, and they are the lines a supplier can be held to.

• Fabric: polypropylene non-woven, or a laminated alternative where liquid contact is possible.
• Sole: a non-slip treatment, which matters on a polished or wet laboratory floor.
• Fit: universal elastic fit for corridor and low-class rooms, boot style where the cover must clear a trouser leg and stay put.
• Pack format: the unit count per box, so that a reorder can be compared with the last one on the shelf.

The stock item in our own range, the PP non-woven shoe cover with a non-slip sole, is specified on those four lines rather than a class number, and it is paired with the non-woven bouffant cap at the entry point and examination gloves at the bench.

Running a laboratory, a compounding room or a clean production area? Wholesale and multi-site ordering covers case pricing and account setup, the B2B wholesale collection lists lines held for institutional buyers, and the laboratory consumables collection groups the gowning and bench items in one place.

References

1. FDA recognised consensus standard, ISO 14644-1, recognition number 14-500 (checked 26 September 2026)
2. Federal Standard 209E cancellation, Institute of Environmental Sciences and Technology (checked 26 September 2026)
3. OSHA 29 CFR 1910.132, general requirements for personal protective equipment (checked 26 September 2026)

Related Reading

• Shoe covers in cleanrooms: standards Canadian labs should know
• Shoe covers for laboratory and cleanroom use: selection criteria
• Lab entry protection: bouffant caps and shoe covers for Canada

Frequently Asked Questions

Do laboratory shoe covers need to be sterile?

No. ISO 14644 classifies the air in the room, not the garment, so it does not require a sterile shoe cover. A shoe cover is a gowning consumable rather than a licensed device, and the selection is driven by the fabric, the sole and the facility's own gowning procedure.

Which shoe cover grade does an ISO Class 7 laboratory need?

The class describes airborne particle concentration, not the cover. ISO Class 7 allows 352,000 particles of 0.5 micrometres or larger per cubic metre, and the shoe cover has to fit the gowning procedure written for that room. In practice that means a non-shedding non-woven fabric with a non-slip sole rather than a numbered cover grade.

Is FED-STD-209E still used in the United States?

The federal standard was cancelled in 2001 and the ISO 14644 series replaced its class numbers. It still appears on older US facility specifications, drawing packages and SOPs, which is why a class 1000 line on a supplier document has to be read as ISO Class 6 rather than ignored.

How should a laboratory compare aseptic shoe cover suppliers?

Ask for the fabric construction, the sole treatment and the pack format in writing, then check the fill on a reorder. Suppliers that quote only a class number and not the material have not answered the question the room actually poses.

Does Canada use different cleanroom classes from the United States?

Both countries classify cleanrooms by the ISO 14644 series, so the particle limits are the same numbers. The difference is citation practice: Canadian facility documents normally quote the ISO class, while US documents and translated supplier sheets often keep the withdrawn class number alongside it.

Last updated: September 2026. CliniEco Medical is a licensed medical device establishment (MDEL #35334).