HELENA, Mont. -

A California-based food distributor is continuing its challenge of a rule that says milk sold in Montana must be stamped with a "sell-by" date of 12 days after it is pasteurized.
    
Core-Mark International argues consumers would be better informed with a "use-by" date set by the processor. Montana's milk-producing industry supports the current rule.
    
District Judge Mike Menahan of Helena heard arguments from both sides Tuesday and says he will issue a ruling after receiving written arguments.
    
Core-Mark has been trying to overturn the "sell-by" rule for several years.