What is the best magnifying power for yeast dissection? Ian - Service & Support Manager 30 March 2021 15:49 Updated Answer : x20 objectives and x15 eyepieces will allow just under x300 magnification. This is good for tetrad dissection. We have no plans to go over to a newer system than this. If you would like more help feel free to contact Singer Instruments Comments 0 comments Please sign in to leave a comment.