KIMAX apparatus used in general purpose distillation and phenol distillation. Flask has a flat bottom and a distillation head with a TS 19/38 joint. Supplied with a TS stopper. Condenser is Graham-style having a 200 mm jacket with a TS 19/38 joint at the top only. For method, reference APHA Examination of Water and Wastewater: Method 4500-NH3 nitrogen (ammonia) in purified drinking water, natural water, and highly purified wastewaters (concentration < 20 µg/L) Method calls for use with tall form 50 mL Nessler Tubes 45315A & B-50).