Quality Control Testing conducted by ZERUST quality control personnel using laboratory equipmentAfter your product has been manufactured, it may enter a phase called Quality Control Testing before it is released for shipment. This critical step verifies that products meet defined performance, consistency, and quality standards before they leave our facility.

This process is built into the quoted lead time to help ensure reliable corrosion protection and material performance for every order.

What Is Quality Control Testing?

Quality Control Testing is a series of inspections and evaluations performed by our QC Department to confirm that your product meets established requirements. Furthermore, these checks are designed to ensure consistency across batches and verify that the product performs as intended.

For corrosion protection products, Quality Control Testing helps confirm that materials meet internal specifications related to composition, performance, and appearance before shipment.

Overview of the Post-Production Review Process

Quality Control Testing using a dart impact test on ZERUST VCI filmThis post-production review process plays an important role in maintaining product reliability and customer confidence. Without proper testing, variations in materials or processing could impact performance in real-world applications.

It helps ensure:

  • Products meet internal quality standards
  • Corrosion protection performance is consistent
  • Materials conform to specified requirements
  • Issues are identified before shipment
  • Customers receive products that perform as expected

As a result, QC Testing reduces the risk of field issues, rework, or premature corrosion.

How This Step Affects Production Timelines

A portion of the quoted lead time for each order is allocated to QC Testing. This time allows the QC Department to complete necessary inspections without rushing the process or compromising accuracy.

Because QC Testing is part of the production workflow, it is not an additional step added after manufacturing is complete. Instead, it is an integrated part of delivering a finished product that meets expectations.

Questions About Quality Control Testing or Lead Time?

Quality Control Testing is built into the quoted lead time to help ensure product
consistency and performance. A service representative can explain how testing applies
to your specific order.

Quality Control Testing performed by ZERUST laboratory personnel using dart impact equipment

What Is Reviewed Before an Order Is Released

During QC Testing, products may be evaluated for factors such as:

  • Visual and dimensional consistency
  • Material properties
  • Conformance to internal specifications
  • Overall product integrity

The specific checks performed depend on the product type and its intended application. However, the goal remains the same: to confirm that each order meets defined quality standards before release.

Can Quality Control Testing Be Waived?

In some cases, customers may choose to waive Quality Control Testing. To do so, a Quality Testing Waiver Request form must be signed and submitted.

Waiving QC Testing means the product will ship without completing the standard quality checks. Customers considering this option should carefully evaluate the potential risks, as the testing process helps ensure consistent performance and quality.

For additional details about waiving testing, customers should contact their service representative.

When Should You Ask About Quality Control Testing?

Customers may want to discuss if:

  • Delivery timelines are critical
  • There are questions about the lead time
  • A waiver is being considered
  • Additional clarification is needed on the testing steps

Early communication with a service representative helps avoid delays and ensures expectations are aligned.

If you have questions about QC Testing, quoted lead times, or whether testing can be waived for your order, speaking with a service representative can help clarify your options. As an ISO-certified organization operating under a Quality Management System (ISO 9001:2015), NTIC and ZERUST® follow established processes to ensure product consistency and reliability. Furthermore, ZERUST® representatives can explain how Quality Control Testing fits into the production process, review requirements for your specific product, and help you make informed decisions that balance expectations and delivery timelines.

Need More Information About Quality Control Testing?

If you are considering a Quality Control Testing waiver or need clarification on testing
requirements, a service representative can review your options and help you make an
informed decision.

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