NAPT samples are scheduled to be shipped from Logan, UT the first weeks of February, May, August, and November. There will be four exchanges each of five soil samples, three plant samples, and/or three water samples, depending on the program you have enrolled in. The two-time exchange for Soil Only and Soil & Plant programs will continue to be available. You can select only those quarters in which you will participate, rather than the normal four-time exchange. Please see the NAPT Information Sheet for program details and pricing.

To participate in the PAP program, participants must adhere to the PAP Ethics Declaration. When enrolling in the PAP program, please read, sign and return the Ethics Declaration.

NAPT Info and Pricing Sheet | Contact Us

Current Labs: Renew online | Renew by mail/fax (PDF) | Change program | Print your enrollment letter

New Labs: Enroll online | Enroll by mail/fax (PDF)

If enrolling by mail or fax, please print and send the form to the address below and make checks payable to: Soil Science Society of America. Please notify us before sending your form and payment by mail.

Soil Science Society of America
Attn: Marie Johnston
5585 Guilford Road
Madison, WI 53711  USA

P: 608-268-3976 | F: 608-273-2021 | E: napt@soils.org