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"Your [PASS] routines are flexible and easy to use and your customer service and support is A-double-plus."

—Nayak Polissar, PhD

“I’ve used NCSS since 1986 and PASS since 1997. The utility, precision, documentation, output and ease-of-use of your products are the best in the business. Thank you!”

—Tim Gohmann, Ph.D.