Wis. Admin. Code § ATCP 40.30
A soil or plant additive is mislabeled if, based on a sample collected and tested according to s. ATCP 40.32, the product contains less than 98% of the amount of any active ingredient guaranteed on the package label.
History: CR 04-140: cr. Register September 2005 No. 597, eff. 10-1-05.