Why did the Polypropolene Bottle deform in shape?
Bottles made of PP (polypropylene) are marked with the symbol “PP” on the bottle. Always dismantle the bottle for boiling or steam sterilizing (temperatures above 80 ˚C) into its component parts and leave it open, otherwise deformation may result. Certain constituents of drinks (eg orange juice) may discolour the material or affect its odour. This has no effect on the suitability of use or safety of the bottle. Do not pour water over 40˚C into your bottle, seal tightly with disc and screw ring and allow to cool. The vacuum caused by the cooling effect can damage your bottle. If you use hot water, we suggest that you place the sealing disc on the bottle only once the water has cooled to room temperature. Deformed bottles will not be replaced. On occasion the deformed bottle will retract back to original shape after re-cleaning and sterilising.
