If using for DIC, make sure you are using matching condenser slide. This one is intended DIC M/N2. If not using for DIC you can just ignore this line.
Each used objective that we sell has been completely inspected, cleaned, installed into the appropriate microscope and it performance observed by a qualified technician.
If objective adjustable/spring loaded it is lubricated and verified that its mechanical parts move smoothly well.
Feel free to check with us if you not sure that it would fit your microscope.
Please do not hesitate to contact us if you have any questions.