Whatman Filter Paper Sizes

whatman filter paper sizes
    filter paper
  • A piece of porous paper for filtering liquids, used esp. in chemical processes and coffeemaking
  • Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine solids from liquids or air.
  • (noun) The disk of paper used in a filtration.  Example: a coffee filter.
  • a porous unsized paper used for filtering
  • (size) the physical magnitude of something (how big it is); "a wolf is about the size of a large dog"
  • (size) cover or stiffen or glaze a porous material with size or sizing (a glutinous substance)
  • Each of the classes, typically numbered, into which garments or other articles are divided according to how large they are
  • (size) (used in combination) sized; "the economy-size package"; "average-size house"
  • The relative extent of something; a thing's overall dimensions or magnitude; how big something is
  • Extensive dimensions or magnitude

Whatman 1949 Mould Made Ledger Paper
Whatman 1949 Mould Made Ledger Paper
Countermark from a sheet of ledger paper, mould machine-made at Springfield Mill by W & R Balston Ltd, in 1949. This piece cut to 10?" x 9" and previously kept-back as a mill reference sample, though it had already been supplied to customer (hence the ledger ruling). Two annoying ring-binder punch holes the only defect (that and not having the full-size sheet that this piece was taken from!). Not as thick as the earlier hand-made examples, nor yet as heavily sized. Plus, they have dropped the 'HAND MADE' from the countermark. At about this period Balston's were more dependent on their filter papers and drawing and writing papers, with ledger papers coming in fourth, though still a fairly large part of their business. Ledger papers were made more and more on their mould-machines (2 by that time), and this piece has a completely different 'feel' to it, compared to the others. Nice piece of paper though, in all fairness.
Paper Crane!
Paper Crane!
Thanks to DQ for teaching me how! Note the first attempt of a crane is on my head.

whatman filter paper sizes
Related topics:
circular polarizing filter 77mm
diatom aquarium filter
spam filter mail
shower filter comparisons
diy sand filter
email filter security
bosch cabin filter