When exactly is a PET container deemed “large-sized”? If you’re looking for a clear dividing line, then the answer is five litres. Containers with this or greater volume are generally considered bulk containers. The water industry is a typical application for them: In many countries, for instance those with high daytime temperatures or insufficient drinking-water quality, large-sized PET containers are available in supermarkets. Elsewhere, they’re commonly seen atop the water cooler in office workplaces and doctors’ practices.
Big customers and companies are the primary target group for large-sized containers: In the food service industry, edible oils and cleaning agents are often purchased in ten- or twelve-litre canisters. But the household products and chemical industry also manufactures large containers for household use, such as windshield wiper fluid for cars.
And if we go even bigger, the beer sector also belongs on the list. Beer in PET? Yes. Because for shipping and logistical reasons, beer used in the food service industry in some countries is filled in plastic kegs with a volume of up to 20 litres.