Your Guide to figuring out if Your Surgical Instrument is Rusted or Stained

Your Guide to figuring out if Your Surgical Instrument is Rusted or Stained

Stains can be removed but rust can leave permanent (pitting) long lasting effect on a medical instrument. So how do you know if a orangish-brown color is a stain or rust, use the eraser test. Simply rub an eraser over the discoloration until it is removed and the metal on the surface is clean and smooth, this is a stain. but, if the discoloration is removed with the pencil eraser and a pit mark shows under the discoloration, this is corrosion, which will continually rust.

Troubleshooting Stain Guide: Orange/Brown Stains - Most people think that when they see orange/brown stains that it's rust. When this stain color appears as a result of PH surface deposits, it is a result of any of the following: improper soaps and detergents, cold sterilization solution, possibly baked-on blood, soaking in saline or using laundry soap, Chlorhexidine usage,. Dark Brown/Black Stains - If it's a low PH usually under six, then its an acid stain. it may be caused by improper detergents and soaps and/or dried blood. Bluish Black Stains - When various metals are ultrasonically pushed together this is called reverse planting. What this means is when you have a stainless steel surgical instrument sets preced with chrome surgical instruments it will cause a stain color reaction. Exposure to saline, blood or potassium chloride will cause this bluish-black stain to occur. Multicolor Stains - Excessive heat by a localized "hot spot" in the processing cycle. Light and Dark Spots - When you allow forceps to air-dry. When the water that is left on the surgical instruments begins to air-dry then the minerals like sodium, calcium and magnesium are left on instrument's surface.

Bluish Gray Stains - This happens whenever cold sterilization is being used outside a manufactuer guidelines. Dark Stains - Whenever amonia is present.

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