Sink installations around campus are varied, depending on their service requirement. They may vitreous china or a lower grade (type 304) stainless steel for washrooms, or type 316 stainless steel for labs. Cleaning of sinks for washrooms is handled through Facilities. Cleaning of sinks in laboratories is the responsibility of the lab user. This is a safety issue since custodial personnel are unaware of the chemicals in lab sinks.