The low. setting is 4 power magnification and the scope is adjustable up to 12 power magnification. The 50 on the. end means the objective lens is 50mm in diameter. This info is well and good but there is more to it. All. 4-12x 50 scopes are not created equally. The diameter of the scope tube is one factor in how much elevation adjustment the scope has.
Hepatitis A virus can live outside the body for months, depending on the environmental conditions. Hepatitis B virus can survive outside the body at least seven days and still be capable of transmitting infection. Recent studies have shown that hepatitis C virus can survive outside the body and still transmit infection for 16 hours, but not longer than four days. This answer should not be considered medical advice...This answer should not be considered medical advice and should not take the place of a doctorâs visit.
Candida albicans as the most important nosocomial fungal pathogen can survive up to 4 months on surfaces. Persistence of other yeasts, such as Torulopsis glabrata, was described to be similar (5 months) or shorter (Candida parapsilosis, 14 days). Most viruses from the respiratory tract, such as corona, coxsackie, influenza, SARS or rhino virus, can persist on surfaces for a few days. Viruses from the gastrointestinal tract, such as astrovirus, HAV, polio- or rota virus, persist for approximately 2 months. Blood-borne viruses, such as HBV or HIV, can persist for more than one week. Herpes viruses, such as CMV or HSV type 1 and 2, have been shown to persist from only a few hours up to 7 days. The most common nosocomial pathogens may well survive or persist on surfaces for months and can thereby be a continuous source of transmission if no regular preventive surface disinfection is performed. http://www.biomedcentral.com/1471-2334/6/130