Captain Phipps in 1773 secured samples of soft blue clay in this manner from a depth of 683 fathoms, but as a rule when sounding in great depths the sample is washed off the tallow before it can be brought on board.
Thus in Syria one who touched a dove became taboo for one whole day, and if a drop of blood of the Hebrew sin-offering fell on a garment it had to be ritually washed off.
All unstable (flaking or peeling) paint surfaces, especially water-soluble distempers, must be removed or washed off before applying Emulsion.
The lower notes can actually last for days if not washed off and are known as the dry down aromas.
Acid - Corrosive acids such as hydroflouric acid are carefully spotted on the surface just long enough to etch the design and are then washed off.