Ultimate Guide to Torque Testing Standards (ASTM & ChP)

Why Standards Matter

In the global market, "it feels tight enough" is not a valid quality metric. You need traceable data. The NLY-20A is built to comply with the world's most rigorous testing standards.

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Key International Standards

1. ASTM D2063 (USA)

Standard Test Methods for Measurement of Torque Retention for Packages with Continuous Thread Closures.

• Relevance: The "Bible" of torque testing. It defines how to measure removal torque after a specific time interval (retention).

• NLY-20A Fit: Meets the requirements for digital precision and non-deforming clamping.

2. ASTM D3198 (USA)

Standard Test Method for Application and Removal Torque of Threaded or Lug-Style Closures.

• Relevance: Specifically covers both Application (Locking) and Removal (Opening) torque.

• NLY-20A Fit: Our dual-mode software is a direct implementation of this standard.

3. GB/T 17876 (China)

Packaging containers - Plastic pilferproof closures.

• Relevance: The primary standard for beverage caps in China.

• NLY-20A Fit: The default testing algorithms are optimized for this standard.

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Upcoming Regulation: ChP 2025 (China Pharmacopoeia)

The 2025 edition of the Chinese Pharmacopoeia (ChP) places a heavier emphasis on Container Closure Integrity (CCI) for pharmaceutical packaging.

• The Shift: Moving from simple visual inspection to deterministic, data-driven testing.

• Torque's Role: Consistent application torque is defined as a critical parameter for maintaining seal integrity over the shelf life.

• Compliance: Using a digital tester like NLY-20A with data export capabilities helps pharma companies meet the new data integrity requirements of ChP 2025.

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Setting Up a Compliant QC Workflow

To meet these standards, your lab workflow should include:

1. Validation: Ensure your tester is calibrated (Class 0.5 accuracy).

2. Sampling: Test a statistically significant number of samples (NLY-20A calculates deviation automatically).

3. Reporting: Print or export the data for every batch. Handwritten notes are no longer sufficient for GMP audits.

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Conclusion

Whether you are exporting beverages to the US (ASTM) or selling medicine in China (ChP), the NLY-20A Digital Torque Tester is your passport to compliance. It transforms a physical feeling into defensible, scientific data.