Manufacturer listing (AFL Customer Buyer’s Guide): Replacement Tape, Type S-Blue (box of 6 tapes, 8500-10-0021MZ). Replacement tapes are for the Cletop-S series; sold as a box of 6 replacement tapes that correspond to part 8500-10-0021MZ. Distributor pages note each tape provides ~400 cleans/ swipes and that the Cletop instrument is sold separately.