We have done extensive research to show that the difference in purity specifications does not compromise the quality or performance in assays using the salt-free primer pairs instead of the cartridge purified primer pairs. You can review the Biosearch-conducted purification study by downloading this report.
Depending on your desired synthesis scale, Salt-Free primer pairs range in price from $15 - $45. Begin ordering your primer pairs with your probe order today. They are currently available for purchase with Dual-Labeled Probes, Molecular Beacons and BHQplus Probes.