How many digits does a UN-number contain?
Understand the Problem
The question is asking how many digits are present in a UN-number, which relates to the identification numbers for hazardous materials used globally.
Answer
Four digits.
The final answer is four digits.
Answer for screen readers
The final answer is four digits.
More Information
UN numbers are used worldwide to identify hazardous materials in transport and are part of the United Nations Recommendations on the Transport of Dangerous Goods.
Tips
A common mistake is confusing the number of digits; remember that a UN number is always four digits.
Sources
- UN number - Wikipedia - en.wikipedia.org
- UN numbers - EPA - epa.govt.nz
- Hazmat Placards and UN Numbers: What You Need to Know - SafeRack - saferack.com
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