- fixer,
sometimes still called 'hypo' from the
original chemical name,
hyposulphite of soda. It
functions to
dissolve silver halides, e.g., AgBr, components...
- or "fixed" in a hot
solution of
sodium thiosulphate, then
known as
hyposulphite of soda and
commonly called "hypo",
which dissolved the
silver iodide...
- much use due
partly to the
price of
hyposulphite. Additionally, with Patera's process, if the
sodium hyposulphite failed to
dissolve perfectly, silver...
- and
heated salt water. Later, a
solution of the more
effective "hypo" (
hyposulphite of soda, now
known as
sodium thiosulfate) was used instead. The resultant...
-
improvised respirators made from
cotton waste pads
impregnated with
sodium hyposulphite,
sodium bicarbonate and glycerin. The
respirators made
little difference...
- in 1819, and
informed Talbot and
Daguerre of his
discovery that this "
hyposulphite of soda" ("hypo")
could be used as a
photographic fixer, to "fix" pictures...
- may be made
before drying, by
using a bath of
chloride of gold, or of
hyposulphite of soda.
Richard Kingham published further instructions for the amateur...
- 1839, John
Herschel pointed out his
earlier published discovery that
hyposulphite of soda (now
known as
sodium thiosulfate but
still nicknamed "hypo")...
- like the
black veil, was
dipped in anti-gas
chemicals such as
sodium hyposulphite,
washing soda,
glycerine and water. The
choice of
chemicals used was...
- however. He is
implicated in the
support of a
patent for the use of
hyposulphite of soda to fix
daguerreotype images,
despite clear indications that he...
