The Kirkland Signature (Costco)
Platinum Performance UltraShine is part of the
Dishwasher Detergents test program at
Consumer Reports. In our lab tests, Dishwasher Detergents
models like the Platinum Performance UltraShine are rated on multiple criteria, such as those
listed below.
Cleans dishes
Gauges how well a detergent removed a caked-on puree of foods from glass dishes.
Resists film, discoloration
Ability of the detergent to prevent deposit of minerals.
