37% solution "Lot Analyzed, Fisheries Grade
UPS Hazardous Chemical - Additional $18.50 surcharge shipping and special handling fee
Parasiticide, Protozoacide, Fungicide: Effective against many external pathogens.
Application: 250 ppm bath for 1 hour. 15-20 ppm in ponds for indefinite period. Particularly effective as a combined therpeutant with Malachite Green i.e. 0.05 to 10 ppm Malachite Green and Formalin 15-50 ppm in ponds on 3 alternate days.