I bought this a few years ago to study basic biology and still haven't realized that the 25x magnification doesn't work with this microscope. The 10x eyepiece screws on and off while the 25x eyepiece does not fit. It doesn't screw or slip, so unless I'm doing something wrong, I think this eyepiece is not suitable for this microscope. You can unscrew 10x and stick 25x over the body tube, but it's not possible to secure it in place. Disappointing.
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