Reticle, IMA/USP Counting

In order to meet USP 788 standards when using this reticle you will need to determine the diameter reticle required by your microscope (if you are unsure of how to measure this please call us, we will be happy to help you figure it out), and the magnification factor (MF) of your microscope. The MF is unique for each microscope and 10x objective combination. Determining the correct MF value insures that the sizing circles will be exactly 10 and 25 microns +/-2% on your microscope.

When ordering please provide the following:

• Diameter of eyepiece reticle for your microscope (16mm - 28mm)
• Magnification Factor of your microscope. (Detailed instructions on how to determine your MF are here).

NOTE: Because the IMA/USP counting chamber reticle is a special order product and is made specifically for your individual microscope, please allow 2-3 weeks for delivery. Additionally, IMA/USP reticles are not returnable.