Alok Masterbatches Ltd supplies UvNox - Shelf [PET] Masterbatch. Alok Masterbatches Ltd is ISO 9001:2000 and ISO 14001 certified company. UvNox - Shelf [PET] Masterbatch includes state of the art UV stabilizer for packaging industry. Unlike conventional UV stabilizers, this UV protects not just the PET bottle but also blocks passage of UV inside the bottle, providing full range UV protection to the packed contents. Use of this UvNox - Shelf [PET] Masterbatch enables clear packaging for products sensitive to UV rays and eliminates the need for outside packaging like paper boxes.