care of stainless steel, copper, porcelain sinks
Stainless steel sinks are easy to care for. Water spots and mineral deposits can be prevented by rinsing thoroughly after each use and wiping dry with a clean, soft cloth. Use only non-abrasive cleaners. Stainless steel sinks will show day-to-day wear, including minor scratches. Over time this wear will become uniform with the sink’s grain, creating its own unique character, much like the patina on fine silver.
Clean your stainless steel sink on a frequent, regular basis. 
When cleaning your stainless steel sink, ensure the sink is clean and dry. 
Use a mild abrasive cleanser such as Old Dutch, Comet or Cameo. 
When cleaning and scrubbing, follow the direction of the grain of the stainless steel sink. Any scrubbing against the grain will result in scratches. 
Always rinse stainless steel sinks thoroughly after cleaning, and wipe with a cloth to prevent any water-spotting. 
If there is a mineral deposit build-up, use vinegar, Lime-Away or CLR, and flush with water. 
Use stainless steel bottom grids to prevent the sink bowl from any scratching or markings from kitchen utensils and cutlery. 

DO NOT use steel wool pads to clean your stainless steel sink. The small iron particles of the pads will lead to rusting and corrosion. It is highly recommended to use scouring pads, such as ScotchBrite to clean. 
DO NOT keep any mild steel or cast iron cookware in the stainless steel sink for long periods of time, since it will result in permanent staining of the sink. 
DO NOT leave rubber dish mats, sponges, or cleaning pads in the stainless sink overnight. It can lead to staining and discoloration of the stainless steel sink. 
DO NOT use chlorine bleach as a cleanser, for it may cause pitting. NOTE: Some bacterial soaps contain chlorine compounds. 
BE AWARE that any sink drain cleaning product containing sulphuric or hydrochloric acid will damage the stainless steel sink

Fill a porcelain sink with hot water and add a cup of bleach to it to deal with long standing stains. Let it sit for an hour or two. Clean it out with dish washing liquid to clean all traces of bleach out. 
Finish by attacking any stains with scouring powder. If there are still marks left, try leaving a paste of scouring powder and water on the stain for a few hours. If everything else fails, wet a small pumice stone and gently rub the stain. Realize that this can damage the finish so only do this as a last resort--very carefully. 

After each use, the sink should be rinsed and towel dried thoroughly. To clean the sink, an ordinary mild detergent and soft cloth should be used, then rinse the sink thoroughly and towel dry. Harsh alkaline-based, ammonia-based, or harsh acidic-based cleaning chemicals or products are not to be used. Never use abrasive cleaners or scouring pads. To remove stains and tarnish, a good quality copper cleaner, following manufacturer’s instructions should be used. For added protection, coat with a fine sink wax.  For tough stains try using a paste of baking soda and water applied with a sponge.  Rinse thoroughly and dry with a soft cloth.  Copper sinks can be used for all normal household tasks but avoid prolonged surface exposure to acidic foods such as tomato sauce and citrus products.  If these products sit overnight in direct contact with copper, the surface may discolor. Should the surface discolor, it will start to darken back down with use. The natural patina process may also be affected by mineral content in your water supply.  Removing any standing water with a soft cloth is recommended to prevent calcium staining and mineral buildup. To further age and patina a sink, dissolve a teaspoon of salt with 1/4 cup ammonia and apply to sink. Let dry for half an hour then wash with cold water and dry with a clean, soft cloth.  Repeat process to further patina.

                           Care of all sink materials
We have farmhouse, apron, undermount, porcelain stainless steel and copper sinks.
                Warehouse Prices on Designer Sinks 
copper sinks, smithys, bathroon sinks, bar sinks