AMscope, I bought a microscope, dark field, but 15 days is spoiling the transformer andthe lighting system'm useless, I called the company AMSCOPE, but do not take care of repair, or give as a reply any fix the problem.<br style="color: rgb(51, 51, 51); font-family: arial, sans-serif; font-size: 16px; background-color: rgb(245, 245, 245); "><br style="color: rgb(51, 51, 51); font-family: arial, sans-serif; font-size: 16px; background-color: rgb(245, 245, 245); ">The microscope ,have medium quality, but the company is informal and is not responsible for their products,<br style="color: rgb(51, 51, 51); font-family: arial, sans-serif; font-size: 16px; background-color: rgb(245, 245, 245); ">I do not advise the purchase