The PQ-it™ Macro

Tired of spending more than 50% of your time building graphs and reports?

Building graphs and reports can be a monotonous and tedious job. It takes up numerous hours per day, and your other responsibilities keep piling up. Supplier change requests, process qualifications, process validations, and capability analyses all continue to accumulate.

You need a new and tested productivity tool that can save you time to focus on more critical tasks. Use the new PQ-it macro developed for Minitab statistical software. It reduces the time spent in statistical evaluations for production capabilities of single/multiple parts with single/multiple features.

The gift of time

By using the PQ-it macro, you can complete your analysis more than five times faster than with manual construction. The average time saved on analyzing one 100-feature part vs. manual analysis is 5 hours. Even a simple 5-feature product analysis can save you at least 15 minutes.

Save up to 5 hours on a single product

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PQ-it output data

After the analysis is complete, the PQ-it™ macro generates the following outputs:

• Data boxplot per feature
  • Including Upper and Lower specification limits
• Anderson-Darling normality test
• Ryan Joiner normality test
• Grubb’s outlier test
• Process capability graph
  • Mean: Data’s average
  • Dev.: Data’s standard deviation
  • Pp: Index used to summarize a system’s performance in meeting two-sided specification limits
  • PPL: Index that measures how close the process mean is running to the lower specification limit
  • PPU: Index that measures how close the process mean is running to the upper specification limit
  • Ppk: Index of process performance which tells how well a system is meeting specifications
  • Cpm: Index that indicates how well the system can produce within specifications using the target value instead of the mean

The summary table reports the following values:

• p-value Grubbs test
• p-value Anderson Darling test
• p-value Ryan Joiner test
• p-value Skewness Kurtosis All Normal test
• pass/fail Skewness Kurtosis All Normal test
• p-value Skewness Kurtosis Specific Normality test
• Pass/Fail Skewness Kurtosis Specific Normality test
• Pass/Fail Skewness Kurtosis combined tests
• 95/90 lower tolerance interval
• 95/90 upper tolerance interval
• 95/95 lower tolerance interval
• 95/95 upper tolerance interval
• 95/99 lower tolerance interval
• 95/99 upper tolerance interval
• Process Pp
• Capability Ppk

The PQ-it™ macro was developed by Lowell, Inc., a precision machining contract manufacturer based in Minneapolis, Minnesota. Founded in 1964, Lowell, Inc. is a leading contract manufacturer of implantable medical devices and instruments for the Orthopedic and Cardio/Vascular markets.