Frequently Asked Questions

How long should my halogen bulbs last for my microscope?  
  The manufacturer rates our ultra-high intensity halogen bulb (M793L) for 40 hours of continuous use. Our regular intensity halogen bulb (M793LGL) is rated for 200 hours use.

How do I "Par-Focal" my microscope?  
  A. Position the microscope above a flat, stationary surface.
B. Using a pen or pencil, make an "X" on a piece of white paper to serve as a focus target and place it within the illumination field of the microscope.
C. Set both eyepiece diopter settings to '"0". Also set assistant's eyepiece diopters (if any) to "0".
D. Set the microscope near the middle of the focus range.
E. Position the microscope vertically at a convenient viewing height so that the target is within the viewing range.
F. Set the microscope on its highest magnification setting and focus using the fine-focus control until a sharp image is obtained.
G. Being careful not to physically shift the microscope position, change the magnification setting to its lowest position. Focus the left and right eyepieces, one at a time, by turning the diopter ring until the image is clear and sharp. Tighten the diopter lock button to lock in this position, and record the settings for future use.
H. Each operator will have their own particular settings that are to be dialed in whenever that particular operator uses the microscope.
I. This procedure does not have to be repeated by the same operator each time the microscope is used, but rather the diopter settings noted the last time the parfocaling procedure was performed by that operator should be used. Due to changes in eye correction associated with time, it is recommended this procedure be repeated by the operator once or twice per year

I own both the older STORZ M703 series and the newer series with the M793 light source. Can I order one bulb for both systems?  
  Unfortunately not, the M703 series bulb is a 15-volt, 150-watt bulb (Global M807), and the M793 series bulb is a 21-volt, 150-watt bulb (Global M793L or M793LGL).