This preview shows page 1. Sign up to view the full content.
Unformatted text preview: retain microbes. This method is used to sterilize items that would be destroyed by heat. Some examples are: Certain culture media Enzymes Vaccines Injectable antibiotics HEPA (high-efficiency particulate air filters) trap microbes larger than 0 . 3 m in diameter. They are sometimes used in operating rooms and rooms of transplant patients to lower numbers of bacteria. To filter liquids, filters of unglazed porcelain were originally used. Bacteria were removed but viruses went through. For this reason, they were called filterable viruses. In recent years, membrane filters have been developed. These are made of cellulose or plastic and the size of the pores can be selected, down to a size that will even retain most viruses....
View Full Document
This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.
- Fall '09