Bowie-Dick Test Packs Compared: 3M Comply, Crosstex and Open Options

A 3M Comply Bowie-Dick test pack (1233LF, 6 per pack) lists at $67.49 at 3Z Dental and $73.50 at Pedicare.ca — about $11.25 to $12.25 per test. A Crosstex AirView II pack works out to $5.18 each in a 30-pack case, refill test cards in Canada list near $4.73 each, and CliniEco's ISO 11140-5 Type 2 test pack is $24.99 for six, or $4.17 per test. The test itself is identical in purpose on every line: it proves the pre-vacuum sterilizer can remove air before steam arrives. What differs is the format, the price per test, and what you have to keep on the shelf.

This is the daily check that catches air leaks, blocked drains and pump faults — the failures that a temperature and pressure readout will happily report as normal. It is worth 30 seconds of a sterilizer technician's attention and a line on the daily log.

What a Bowie-Dick Test Does, and What It Does Not

A Bowie-Dick test is a Class 2 indicator under ISO 11140-1, with the specific requirements for air-removal indicators in ISO 11140-5. It is run in an empty chamber on a pre-vacuum (Class B) sterilizer, before the first load of the day, using the cycle and exposure time stated in the sterilizer's instructions for use — commonly 134 °C for 3.5 minutes.

What it proves: air was removed from the chamber and steam penetrated uniformly. What it does not prove: that the load is sterile. A Bowie-Dick test passes nothing and releases nothing; it tells you the sterilizer is fit to run loads that day. Sterility assurance still comes from the biological indicator programme — and in Ontario, the RCDSO requires a biological indicator for each sterilizer on every day that it is used, daily monitoring rather than weekly, with the weekly baseline being the CDC / AAMI ST79 standard in most US states.

Three Formats, Three Budgets

Canadian clinics buy Bowie-Dick testing in one of three shapes, and they are not priced alike.

• Single-use test pack. A pre-assembled pack that simulates a standard towel pack. Open it, run it, read the sheet, file it. Nothing else to buy, nothing to clean.
• Test card or sheet plus a holder. A card that goes into a reusable holder or a clinic-assembled towel pack. Lower cost per test, but the holder is a capital item and the assembly is a documented procedure.
• Electronic system. A reader-based Bowie-Dick that returns a pass or fail result with the record attached. Higher capital cost, and the consumable is tied to that reader.

Price Comparison

List prices below were checked on 11 September 2026 at the named suppliers. Currency is Canadian dollars unless the source is marked as a US reseller.

Read the table with two cautions. First, "per test" is only comparable inside a format: a $0.93 sheet requires a towel pack or a holder to function, so it is not a $0.93 test. Second, the reusable pack is priced per cycle over its service life, not per purchase, which is a different procurement conversation from a box of packs.

The Cost of a Year of Daily Checks

One pre-vacuum sterilizer, tested once on each day it runs — 250 days a year — is 250 tests.

The gap between the priciest single-use pack and the lowest is about $1,770 a year on one sterilizer. That is real money, and it comes out of a consumable that has no clinical difference in what it tells you: either the air was removed or it was not.

Choosing Between Pack, Card and Electronic

Three questions settle it for most clinics.

1. How many pre-vacuum sterilizers do you run? At one or two, a single-use pack removes assembly and cleaning steps that a small team cannot reliably document. At five or more, a card-and-holder system or a reusable pack starts to pay.
2. What does your sterilizer manual specify? Some manufacturers name the test method, the exposure time and the chamber configuration. Follow the manual, not a distributor's bundling.
3. How do you file the result? Every format produces a record; the question is whether it is scannable, stapled or photographed into your log. Pick the format your team will actually file, because an undocumented daily check is indistinguishable from no check.

Where CliniEco Fits

CliniEco Medical supplies a Bowie-Dick test pack to ISO 11140-5 Type 2 at $24.99 for six tests — $4.17 per test — with a clear blue-to-dark irreversible pass indication, built for the 134 °C × 3.5-minute cycle and sized for benchtop Class B sterilizers. It ships from stock in Canada with no minimum order.

Paired with our autoclave indicator tape at $14.99 for a three-roll set and a Class 5 integrator at $14.99 per 100, a clinic covers daily air-removal checks, pack sealing and in-pack monitoring without buying into a reader platform.

CliniEco Medical is a licensed medical device establishment (MDEL #35334).

If your sterilizer runs daily, the fastest way to verify that your monitoring routine produces readable results is a 5-pack biological indicator trial rather than a full case order.

Related Reading

• Why do autoclave cycles fail the Bowie-Dick test?
• Bowie-Dick vs biological indicator: what each test catches
• Biological indicators explained
• Sterilization compliance hub
• CliniEco Bowie-Dick test pack, 6-pack — $24.99
• CliniEco autoclave indicator tape, 3-roll set — $14.99
• Sterilization monitoring collection
• autoclave log template

Frequently Asked Questions

How often should a Bowie-Dick test be run?

Daily, before the first load, on every pre-vacuum sterilizer. It is an air-removal test, so its purpose is to confirm the sterilizer can run loads that day. Follow your sterilizer manufacturer's instructions for the cycle and exposure time, which are commonly 134 °C for 3.5 minutes.

Is a Bowie-Dick test a substitute for a biological indicator?

No. A Bowie-Dick test confirms air removal and steam penetration in an empty chamber; a biological indicator measures whether the process actually killed spores. Both belong in a monitoring programme. In Ontario, the RCDSO requires a biological indicator for each sterilizer on every day that it is used, daily monitoring rather than weekly, with the weekly baseline being the CDC / AAMI ST79 standard most US states follow.

Why is one Bowie-Dick pack $11 and another $4?

Format and channel, not efficacy. A branded pre-assembled pack carries assembly, packaging and brand margin; a refill card in a reusable holder, or a direct-import pack sold without a distributor tier, costs less for the same class of result. Compare per test inside the same format before drawing conclusions.

Can I use a Bowie-Dick sheet without a holder?

A sheet is designed to be placed inside a standardised towel pack or a holder, because the test depends on the resistance that pack or holder presents to air removal. A loose sheet in an empty chamber does not reproduce that challenge, so the result is not a valid Bowie-Dick test.

Do gravity displacement sterilizers need a Bowie-Dick test?

No. The test checks active air removal, so it applies to pre-vacuum (Class B and similar) sterilizers. A gravity displacement sterilizer removes air by displacement, and its monitoring follows a different schedule in your sterilizer manual and your regulator's guidance.

CliniEco Medical is a licensed medical device establishment (MDEL #35334). Competitor prices are list prices published by the named suppliers on 11 September 2026 and are included for comparison only; currency is noted per row. This article is general information for Canadian healthcare buyers and does not replace the guidance of your regulator, infection-control officer or sterilizer manufacturer. Last updated: 11 September 2026.