Westpak is certified to conduct product/package integrity testing to help guarantee successful delivery of products worldwide by any means of transportation.

Westpak is accredited to ISO/IEC 17025-2005, one of the most rigorous standards available for a mechanical testing laboratory.

Westpak is certified to the requirements of ISO 9001-2008 for quality management, and to ISO 14001-2004 for environmental management and sustainability efforts.


Westpak offers helpful calculators as tools that can be used in planning package and product tests. These tools are designed to provide quick and accurate answers to What-If type inquiries you may have as you develop alternative test plans. Each tool is based on industry-accepted professional standards (e.g. ASTM) or standard practice (e.g. McKee formula, Sample Size formulas). 

Please use the CONTACT US button if you have questions or need additional information. We will get back to you with the information you need. 

Life Science, Reliability

Accelerated Aging Calculator

Distribution Testing

ASTM D4169 Vehicle Stacking / Stacked Vibration Top Load Calculator

Box Compression Test Strength (BCT)

Box Compression Strength Calculator

Sample Size Calculators

Sample Size for Comparing Means
Sample Size for Attributes when C = 0
Sample Size for Individuals