Q.1.What is the most common problem with stainless
steel instruments?
Ans: The most common problem with
the stainless steel instruments is a stain due to a surface deposit, which
appears in different colors. But once the cause is found, the problem
diminishes completely. For detail please go through the
PARVEEN INTERNATIONAL recommendations for instruments cleaning.
Also go through the CHECK LIST for our Analysis Report about Instrument Care
Q.2.What should be the composition
of water for decontamination and cleaning the instruments?
Ans: Never use the drinking water for
decontamination and cleaning because it may contain such material
concentrations, which deteriorate the instrument.
Chloride
contents must be kept as low as 100mg per liter to reduce corrosion risk.
Q.3.What are the Causes and remedies of
water stains and halos?
Ans: Halos are colored surface marks,
which result from the presence of mineral substance or heavy metal ions in
water or cleaning steams.
Water stains are almost similar
phenomena but their contours are sharp. They result from residue of
organic substances in water or in an excessive concentration of mineral
substance such as limestone.
Q.4.What are two reasons behind colored
surfaces residue on the instruments?
Ans: Some yellowish brown to dark
brown residue is sometimes mistaken as rust stains on the instruments.
This is common in the least accessible areas during cleaning.
These deposits can be eliminated buy energetic friction or by
using non-abrasive cleaner.
Q.5.What are the causes of oxidization on
surgical instruments?
Ans: If the surgical instrument are
soaked in concentrated acid solutions for long periods of time. In this case,
the surface of the instruments gives a trusted look this comes from the
formation of an oxide film in places.
Q.6.How to avoid pitting corrosion on the
surgical instruments?
Ans: This is most frequent form of
corrosion associated with multi colored stains and consists in the forming
of holes in material. Such corrosion is caused by halogen ions (Chlorides,
Iodine, bromides) working on the surface and resulting for saline
solutions or other chlorides.
To prevent this type of
corrosion instruments should be cleaned as soon as they have been used.
