In addition to the Check Rock 22 available from AFPC, the organization has partnered with:
Laboratory Quality Services International LQSi, to provide low cost certified SRM’s for MAP and S, Zn enhanced MAP.
An animal feed SRM is also in the works. These may be purchased directly from LQSI by following the link above or email firstname.lastname@example.org . An informational flyer on these materials is available by clicking here: LQSi CRM 021215