I have to say, the 1x8, 1x16 pm splitter from fibermart was very nice, we tested all the 16 channels, all come with low loss and great ER, we customized for 3.0mm PANDA PM1550 fibers with FC/APC, no problem at all, i would like to tell any one who would like to order pm plc splitter, Fiber-MART.com must be the best choice!