The Biochar Labeling Guidance Document provides information about the registration of biochar products. States vary in their requirements as do the biochar products themselves based on what their intended end use is.
The data required on a product label depends on what the product is sold as, which is closely related to the claims (product benefits) made on the label. Biochar is typically sold as either a soil amendment or fertilizer.
General Labeling Requirements:
Soil Amendment Label
- Net volume (and in some states, weight also)
- Brand name
- Guaranteed analysis – ingredient type statement
- Purpose of product
- Directions for application
- Name and address of the applicant
Fertilizer Label
- Net weight
- Brand and grade
- Guaranteed analysis – chemical breakdown (e.g., WIN)
- Directions for use for fertilizer distributed to the end user
- Derivative statement – source of nutrients
- Name and address of registrant / licensee
The full report can be read here: Biochar Labeling Guidance Document