Batch No. And Slab No.
One essential element of slab quality is color match. Since the slabs are 93% natural quartz,the composition of PolarStone produces slight color variations between production cycles due to the innate and complex blending of natural minerals–a characteristic inherent in the product. Yet a batch number is given to each slab,the batch number is on the label affixed to all slabs. 
Follow the guidelines below: