Float Test

Float Test

  • When it comes to sponges, the more absorbent they are, the better they are for wiping up spills and messes. So when faced with a choice between cellulose and foam, which should you pick? A simple experiment identifies the clear winner.

Regular Cellulose
  • Regular Cellulose

    Regular cellulose, like the kind in Scotch-Brite® Scrub Sponges,is full of big holes, which fill with lots of water when the sponge takes a dunk. That makes the sponge sink below the surface when it is saturated.

Hydrophilic Foam
  • Hydrophilic Foam

    Some sponges are made from hydrophilic foam. Even though it's called "water loving" (hydro = water and philia = love), it's less absorbent than cellulose. How do we know? These foam sponges float on the surface in water even when wet, while saturated cellulose sponges sink below the surface.

Polyurethane Foam
  • Polyurethane Foam

    The pores of polyurethane foam might resemble those of cellulose, but don't be fooled. Fully saturated PU foam sponges are champion floaters, not winners, when it comes to wiping up spills and messes.

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