Two numbers appear on most bottles and containers in a Canadian clinic — DIN and NPN — and they mean different things. A DIN identifies a drug or disinfectant regulated in Canada; an NPN identifies a registered natural health product such as hand sanitizer. This guide explains the difference, why it matters for procurement, and how to read labels correctly.
Confusing the two can lead a facility to buy the wrong product class or miss a compliance requirement. For procurement managers, the distinction is simple once you know what each number certifies.
What a DIN Means
A Drug Identification Number (DIN) is assigned by Health Canada to drugs and disinfectants after review of safety, efficacy, and quality. When a healthcare facility uses a disinfectant wipe or a sterilant, the DIN is the proof that the product's kill claims and directions have been reviewed by the regulator. Products without a DIN should not be used for healthcare disinfection.
Examples include the disinfectant wipes and surface cleaners and the Aurelia disinfecting wipes with a DIN.
What an NPN Means
A Natural Product Number (NPN) is issued under the Natural Health Products Regulations for products such as hand sanitizers, vitamins, and herbal remedies. Hand sanitizers in Canada are regulated as natural health products when they meet the applicable formula and labelling rules, which is why you will see an NPN rather than a DIN on most sanitizer bottles. The Aurelia hand sanitizer with NPN 80122015 and the CliniEco foam hand sanitizer 1200 ml refill are examples of NPN-listed products.
The Quick Reference Table
| Feature | DIN | NPN |
|---|---|---|
| Full name | Drug Identification Number | Natural Product Number |
| Regulator | Health Canada | Health Canada |
| Product class | Drugs and disinfectants | Natural health products |
| Typical clinic products | Disinfectant wipes, antiseptics, sterilants | Hand sanitizers, skin care, vitamins |
| Regulatory basis | Food and Drugs Act | Natural Health Products Regulations |
| Why it matters | Confirms disinfection claims | Confirms formula and labelling compliance |
Why Procurement Should Care
For infection control, the DIN is the number that matters most: it certifies that a disinfectant meets the claimed kill standards. When a health authority or auditor asks which disinfectant you use on treatment surfaces, the answer should include the DIN. For hand hygiene, the NPN confirms the sanitizer is a registered natural health product with a reviewed formula — typically an ethanol or isopropanol content within the range Health Canada considers effective.
Neither number should be read as an endorsement of unlimited claims. Facilities should follow the label's contact time and directions for both disinfectants and sanitizers.
Reading Labels Correctly
Check three things on every product: the number format (DIN or NPN), the active ingredient and concentration, and the contact time or use directions. A hand sanitizer with an NPN is not a surface disinfectant; a surface disinfectant with a DIN is not a substitute for hand hygiene. Matching the product class to the task is the core of compliant procurement.
Frequently Asked Questions
What is the difference between DIN and NPN?
A DIN is a Health Canada Drug Identification Number for drugs and disinfectants; an NPN is a Natural Product Number for natural health products such as hand sanitizer. Disinfectants carry a DIN; most hand sanitizers carry an NPN.
Do hand sanitizers need a DIN or an NPN?
In Canada, hand sanitizers are typically regulated as natural health products and carry an NPN. Surface disinfectants carry a DIN.
Why does the DIN matter for disinfectant wipes?
The DIN confirms Health Canada reviewed the product's kill claims and contact time, which is the baseline for infection control procurement.
Can I use a hand sanitizer to disinfect surfaces?
No. Hand sanitizer is formulated for skin, not surfaces. Use a DIN-listed disinfectant for hard surfaces and follow its contact time.
How do I verify a product's number?
Check the label for the DIN or NPN and the active ingredient. Both numbers can be verified through Health Canada's online databases.
Related Articles
- Aurelia Disinfecting Wipes and Hand Sanitizer: DIN and NPN Explained
- Hand Sanitizer in Bulk: Guide for Canadian Clinics
- Disinfectant Wipes: EPA and Health Canada Equivalence
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