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The agent is a "thiosulfate." There are two in use.
The one we all started out on, because the other is more expensive, is sodium thiosulfate. It comes as a powder you add to water, stir until it dissolves then add more water to make the recommended amount. There's normally some potassium alum in it to harden the Gelatin (fixers for color work don't need this as the emulsion is prehardened in manufacture) and some acetic acid to act as a stop bath.
The one we all should be using is ammonium thiosulfate. It's a liquid so it's easier to mix, it works faster and it's easier to wash out of the emulsion. It also contains hardeners and acids.
What else can I help you with?
In photography what is used as a fixing agent?
Sodium Theosulfate AKA Hypo is one form of fixing agent
Is sodium thiosulphate a reactant?
Yes, sodium thiosulfate can be a reactant in chemical reactions, such as in photography as a fixing agent or in medical treatments for cyanide poisoning. It can also be used in measuring the concentration of other substances through titration reactions.
Is hypo is an oxidising agent or reducing agent in photography?
Hypo is a reducing agent when combined with Na.
What is Cu2S2O3 called?
Copper thiosulfate is the chemical name for Cu2S2O3. It is commonly used as a complexing agent in chemical solutions and photography.
How is polonium used in photography?
Polonium is not used in photography.
Is sodium thiosulphate used in photography?
Photographic fixing agent. An emulsion of sodium thiosulfate (called hypo by photographers) is used to stop development of exposed film. Thiosulfate converts undeveloped silver bromide grains in the film into water-soluble silver thiosulfate complexes that can be removed when the film is washed.S2O32- + AgBr(s) AgS2O3- + Br-S2O32- + AgS2O3- Ag(S2O3)23-Thiosulfate is also an antidote for cyanide poisoning. It reacts with cyanide to produce sulfite and thiocyanate ions:CN- + S2O32- SCN- + SO32-This reaction is catalyzed by an enzyme produced by cell mitochondria to neutralize small quantities of ingested cyanide (which occurs naturally in cassava root, lima beans, and almonds!).
Is sodium thiosulphate an acid or a base?
Sodium thiosulfate is neither an acid nor a base; it is a salt composed of sodium cations and thiosulfate anions. It is often used in photography as a fixing agent to dissolve unexposed silver halide in film or prints.
What metal is used in flashlight photography?
aluminuim is used in flashlight photography
The difference between police photography and regular photography?
Police photography is just a synonym for forensic photography
Who was the director of photography on the chase credit card commercial secret agent man?
john seale
What are the different photography lighting styles used in professional photography?
Some common photography lighting styles used in professional photography include natural light, studio lighting, and flash photography. Each style has its own unique characteristics and can be used to create different effects in photographs.
Where was photography created?
The idea of permanently capturing an image on a substrate was thought of by Thomas Wedgwood in England, but his early attempts used silver nitrate without a fixing agent, meaning the images could not leave darkened rooms. The first known photograph taken by a camera is credited to French inventor Joseph Nicéphore Niépce, who in 1826 successfully captured a permanent image using a camera obscura.
