Bottles without graduation, body made ??of PET, Ø 38,5 mm mouth for easy filling and square shape that optimizes packaging and transport. Polyethylene cap with security ring. Sterilized by ethylene oxide and single packed in polyethylene bag: the sterility of the product is only guaranteed if the pack is intact. Available with predosed sodium thiosulfate (20 mg/L), according to ISO 19458. Certificate of sterilization included (to be downloaded free of charge here)