The Vitreous china (porcelain) is part of the Sink
test program at Consumer Reports. In our lab tests, Sink
models like the Vitreous china (porcelain) are rated on multiple criteria, such as those listed below.
Stains: Shows resistance to common bathroom items and cleaning products.
Abrasion: Reflects resistance to damage from nylon and metal scouring pads.
Sharp impact: 70 gram pointed weight dropped from a maximum height of 20 inches