OPTITECH - Mark Blu 50 R&L - 雙條淚液試紙(未滅菌) Mark Blu 50RL Schirmer Mark Blu Tear Test Strips are CE marked product in a Export worthy packing. Two strips i.e. marked left (L) and right(R) they are packed in apouch and sterilized. Packing:Box of 50 pairs Sterile Strips Individually Packed