N.H. Admin. Code § Env-A 4103.67
"Multi-purpose solvent" means any liquid product designed or labeled to be used for dispersing, dissolving, or removing contaminants or other organic materials. The term includes products that do not display specific use instructions on the product container or packaging, products that do not specify an end-use function or application on the product container or packaging, paint clean up products, products labeled to prepare surfaces for painting, and solvents used in institutional facilities other than laboratory reagents used in analytical, educational, research, scientific, or other laboratories. The term does not include solvents labeled exclusively for the clean-up of application equipment used for polyaspartic and polyurea coatings, solvents that are incorporated into or used exclusively in the manufacture or construction of the goods or commodities at the site of the establishment, products that are labeled exclusively to clean a specific contaminant on a single substrate in specific situations, or solvents used in cold cleaners, vapor degreasers, conveyorized degreasers, or film cleaning machines.
N.H. Admin. Code § Env-A 4103.67