Midi kit contains 50 lids with 125 micron filters, 50 liners and 20 sealing plugs. Graduated measurement to 400 mL (or 13.5 fluid oz with mix ratio film insert). Maximum capacity of 400 mL (or 13.5 fluid oz) when filled to within 1/8 inch of rim. For use with part number 16122 Midi Size Cup and Collar. Note: mix ratio available separately.