Hardness Tester Buying Checklist: What Canadian Buyers Should Know

Before buying or using a portable hardness tester, it’s critical to understand its calibration certificate — especially if you're working in regulated environments like aerospace, energy, or industrial fabrication. This guide breaks down what a valid calibration certificate includes, what it means, and what to look for as a Canadian buyer.

Why Calibration Matters

Calibration ensures your hardness tester is providing accurate, traceable results within the expected tolerance range. It’s especially important when:

  • Meeting ISO or ASTM compliance requirements
  • Verifying heat treatment processes
  • Providing documentation for clients or inspectors

What a Legitimate Calibration Certificate Should Include

Not all certificates are created equal. A proper calibration document should come from an accredited lab and include the following details:

  • Model & Serial Number: Ensures traceability to your specific device
  • Calibration Date: When the calibration was performed
  • Calibration Standard Used: Such as ISO 6508, ASTM E18, etc.
  • Measurement Results: Usually multiple test points with deviation tolerances
  • Technician Signature or Accreditation: To confirm it was done by a qualified lab
  • Next Calibration Due Date (optional): Useful for ongoing compliance tracking

Canadian-Specific Calibration Standards

In Canada, buyers should ensure calibration is traceable to national or international standards. Look for references to:

  • ISO/IEC 17025: Standard for testing and calibration labs
  • Measurement Canada or SCC Accreditation: For government traceability
  • Calibration performed with certified test blocks: Essential for portable testers

How Often Should You Calibrate?

While manufacturers may recommend annual calibration, the correct interval depends on usage. Heavy industrial use may require recalibration every 6 months. In Canada, companies often align with internal quality assurance systems or ISO 9001 protocols.

Signs of a Poor or Incomplete Certificate

  • No serial number or device match
  • No standard or testing procedure listed
  • Lack of deviation data or pass/fail criteria
  • Missing technician info or lab identity

Testavor Tip: Ask Before You Buy

If you’re buying a tester from a Canadian supplier or through a distributor, always request the calibration certificate in advance. Confirm:

  • It's recent (within the last 12 months)
  • Matches your model/serial
  • Lists proper international standards

Looking for Certified Equipment?

At Testavor.ca, we research portable hardness testers that ship with valid calibration certificates and serve the Canadian market. Browse trusted testers here, or read our guide on top-rated models in 2025.

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