PREFORM 30/25 (NCB) NECK PREFORM WEIGHTFOR BOTTLE SIZE13 g.250-350 ml.16 g.500-600 ml.17 g.500-600 ml.33 g.1,500 ml. 29/25 (NCB) NECK PREFORM WEIGHT FOR BOTTLE SIZE 11.5 g. 250-350 ml. 14.25 g. 500-600 ml. 28.5 g. 1,500 ml. 31.5 g. 1,500 ml. PCO 1810 (CSD/NCB) PREFORM WEIGHT FOR BOTTLE SIZE 18 g./20 g. 250-350 ml. 25 g. 360 – 500 ml. 33 g. 700-1,000 ml. 40 g. 1,250 ml. PCO 1810 (HOT FILLED) PREFORM WEIGHT FOR BOTTLE SIZE 20 g. 200-300 ml. 23 g. 360 – 450 ml. 23.5 g./25 g. 350-500 ml. 27 g. 500 ml. 28 g. 500 ml. PCO 1881 (CSD/NCB) PREFORM WEIGHT FOR BOTTLE SIZE 17.5 g./19 g. 480-500 ml. 18 g./20 g. 350-500 ml. 26.5 g. 800-1,000 ml. 22.74 g./23.74 g. 450-600 ml. 36.8 g./38.6 g. 1,250-1,500 ml. 38 mm. (HEAT RESISTANCE) PREFORM WEIGHT FOR BOTTLE SIZE 26 g./30 g. 350 ml. 31.5 g. 500 ml. 42 g. 750 ml. 48.2 g. 1,000 ml. CLOSURE TYPEWEIGHT29mm (29/25) Flat Water1.25 ± 0.1 g.30 mm. (30/25) Flat Water1.7 ± 0.1 g., 1.9 ± 0.1 g.PCO 1881 (Hot-Filled/CAF)2.15 ± 0.1 g.PCO 1881 (CSD)2.5 ± 0.1 g.PCO 1881 (Hot-Filled)2.6 ± 0.1 g.38 mm (Heat-Resistance)4.0 ± 0.1 g.