Manufactures of plastic bottle products need a way to ensure that the overall colour of their products are the same from lot to lot.

Production changes can alter the base colour and appearance and the consumer predominately perceives: 

·         Hazy Plastic to be of lower quality

·         A non-clear product can lower the impact of the contained product

·         An off colour product may perceive that the product is defect.

The company needs to produce plastic bottle products to a certain target as colour & appearance perception influences the customers buying decision.