Quick answer: The same ten questions come up in almost every clinic review: how often to monitor, what to do after a failure, how long to keep records, whether gravity sterilizers need air-removal tests, and how to store packs. This page answers them in the order clinics usually ask, with the Canadian position stated plainly and the American baseline flagged where the two differ.
1. How often do I need a biological indicator?
In Ontario, the RCDSO expects a biological indicator for each sterilizer on every day it is used — daily monitoring, not weekly. The weekly baseline is the CDC and AAMI ST79 standard in most US states. If your clinic has been following a weekly habit because that is what a neighbouring practice does, that is the single most important correction to make.
2. What do I do when an indicator fails?
Hold the load. Do not release instruments from a cycle with a failed biological indicator. Then work through the control result, the incubator temperature and the test pack position before deciding whether to retest or remove the sterilizer from service. Rushing to re-sterilize without finding the cause means it will happen again.
3. Do gravity sterilizers need a daily Bowie-Dick test?
No. A Bowie-Dick test measures air removal, and gravity-displacement units do not have an air-removal stage. Those units need the daily biological indicator and chemical indicators instead.
4. How long must I keep records?
There is no single national number. The period comes from the provincial guidance and the professional college that inspects you. Plan for several years, confirm the exact period with your authority, and keep the record retrievable for the day a patient question reaches back further than a routine inspection window.
| Question | Canadian position | US baseline |
|---|---|---|
| Biological indicator frequency | Daily per sterilizer where required, e.g. Ontario | Weekly in most states |
| Air-removal test | Daily for pre-vacuum units before first load | Same daily expectation |
| Failed indicator | Hold the load, investigate, retest or service | Same approach |
| Record retention | Set by provincial guidance and college | Set by state rules and accreditation |
| Storage of packs | Event-related sterility, barrier integrity governs | Event-related sterility |
5. Where should the indicator sit in the chamber?
Follow the sterilizer maker's stated position, generally toward the drain side rather than against the door. The door position sees the least uniform steam contact and is the most common reason a test looks worse than the process actually is.
6. How many indicators should I order each year?
Multiply sterilizers by days of use, add a margin for retests. A single sterilizer used five days a week across fifty weeks needs roughly 250 indicators a year under daily monitoring. The weekly baseline would be about 52, which is why imported plans fall short.
7. Can I reuse a pouch or wrap?
No. Pouches are single-use and wrap is single-use. A reused barrier can carry undetected micro-perforations, and reusing it introduces a pathway for contamination that no indicator will catch.
8. Do sterilized packs expire?
Not by a fixed date. Sterility is event-related, so a pack stays sterile until the barrier is compromised by damage, moisture, or a storage excursion. Inspect the pack rather than dating it out.
9. What happens if I miss a daily test?
Record the omission and the reason, and reinstate the routine the next day. Do not backfill a result that was never run. An honest gap is a documentation issue; a fabricated entry is a serious integrity problem.
10. Where do I start if I have no monitoring system at all?
Start with a written protocol and a daily biological indicator, because that single habit is the one an inspector will ask about first. Add the cycle log, the weekly checklist and a storage walk-through next. The system does not need to be elaborate to be defensible; it needs to be consistent and recorded.
How do I turn these answers into a routine?
Write the ten answers into the clinic's infection-control manual, assign an owner to each task, and review the whole set once a quarter. Most findings are not caused by a missing rule; they are caused by a rule that no one owns.
Provincial infection-control guidance and the CSA Z314 series set the Canadian framework, and aligning the written protocol to that framework is what makes the routine auditable rather than improvised.
Related reading
Sterilization compliance hub; spore test FAQ on incubation and failures; daily sterilization log checklist; spore test frequency in Canada vs the US; BI 5-pack trial; sterilization monitoring collection.
Download the monitoring protocol template from the compliance log centre, run the sterilization self-check against your current practice, and book a sterilization compliance consultation if these answers raised questions about your site.
Ordering for a clinic, lab or care home? Wholesale and multi-site ordering covers case pricing and account setup, and the B2B wholesale collection lists the lines stocked for institutional buyers. Reselling? become a distributor.
Frequently Asked Questions
Is weekly spore testing ever correct in Ontario?
No. The RCDSO expects daily monitoring for each sterilizer on every day it is used. Weekly is the US baseline, not the Ontario requirement.
What should I do if I cannot run a test on a holiday closure?
Record the closure. Monitoring applies to days the sterilizer is used, so a closed day is not a missed test — provided you document it.
Who can sign the sterilization log?
The person who performed the task, identifiable by initials or name. Attribution is what makes a log usable as evidence.
Do I need a separate record for each sterilizer?
Yes. Each sterilizer needs its own result line, because results are attributed per unit, not to the clinic as a whole.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).
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