Sterilizer
تاريخ النشر : 0000-00-00 00:00:00
عدد المشاهدات : 1243
تاريخ النشر : 0000-00-00 00:00:00
عدد المشاهدات : 1243
Dry heat sterilization
is one of the earliest forms of sterilization practiced. Dry heat, as the name indicates, utilizes hot air that is either free from water vapour, or has very little of
it, and
where this moisture plays a minimal or no role in the process of sterilization. The Dry-Heat sterilization process is accomplished by conduction; that is where
heat is
absorbed by the exterior surface of an item and then passed inward to the next layer. Eventually, the entire item reaches the proper temperature needed to
achieve
sterilization. The proper time and temperature for Dry-Heat sterilization is 160 °C (320 °F) for 2 hours or 170 °C (340 °F) for 1 hour. Instruments should be
dry before
sterilization since water will interfere with the process. Dry-heat destroys microorganisms by causing coagulation of proteins. Se2The presence of moisture,
such as in
steam sterilization, significantly speeds up heat penetration.
التعقيم باستخدام الحرارة الجافة يستخدم الهواء الساخن إما أن يكون خال من بخار الماء، أو يحتوي القليل جدا منه،