Section Env-A 103.55 - Lethal dose fifty (LD50)"Lethal dose fifty (LD50)" means a calculated oral or dermal dose of an air pollutant that is expected to cause the death of 50% of an entire experimental animal population.
N.H. Admin. Code § Env-A 103.55
#6328, INTERIM, eff 8-24-96, EXPIRED: 12-22-96; New. #6468-A, eff 3-5-97; renumbered by #8256 (from Env-A 101.161), (see Revision Note #1 at chapter heading); renumbered by #8304 (see Revision Note #2 at chapter heading); renumbered by #9839 (from Env-A 101.109), (see Revision Note #3 at chapter heading); Amended by Volume XL Number 41, Filed October 8, 2020, Proposed by #13105, Effective 9/25/2020 (formerly Env-A 101.111) (see Revision Note #4 at chapter heading for Env-A 100)