n-(1-Naphthyl)-Ethylenediamine Dihydrochloride, 0.1%, available in 500mL (No. 154367-1), 1L (No. 154367-2) and 125mL (No. 154367-6) amber poly bottles.APHA 16th Edition.Shelf Life: Refrigerate; 2 months.Shipping: No restrictions apply.