Does the Dopper Original contain DiBP?

Phthalates, including DiBP (Di-isobutyl phthalate), are not used in the production or formulation of Dopper Original bottles. 
All Dopper bottles are Cradle to Cradle Certified©. The Dopper Original is Cradle to Cradle Certified© Gold. The materials of Dopper Original bottles have been assessed as compatible with human and environmental health by an independent third party.
During the Cradle to Cradle Certified© certification process, one of the components checked is material health. During this step the full formulation of plastics and colour pigments is shared by all material suppliers with, and checked by, an assessment body.
In addition, each material has a signed declaration confirming that phthalates, including DiBP, are not used in the production or composition of Dopper Original bottles.