This Oxalic Acid from Photographer's Formulary can be used as a preservative for pyro solutions or a sensitizer of platinotype paper. It also acts as a restrainer with some developers and removes ink in some developer stains. it is used in toning and mordanting formulas.

Water and Alcohol Soluble    100g Bottle

Related Questions and Answers

Q: 1. Can anyone provide an ingredient list other than saying "it's non toxic" - I want an actual list of ingredients in this product.

A: The manufacture only lists that the Atmosphere Aerosol Haze Spray for Photographers & Filmmakers, It is ozone safe and does not contain any CFC's or ozone depleting chemicals. This product is not known to contain any chemicals currently listed as carcinogens or reproductive toxins. MFR contact information is, https://bhpho.to/43XDKvy . This product’s ingredients are not found in the following lists: Federal, OSHA, NTP, IARC. It contains Propane, Butane, and medicinal grade mineral oil. Breathing small amounts of this material during normal handling should not cause harmful effects. Please see label for precautions before use.

Q: 2. About how many photos does one can last?

A: The Atmosphere Aerosol Haze Spray for Photographers & Filmmakers is for a scene. And it depends on how large the scent/space is. One 8 ounce can will spray continuously for approximately 5 minutes 30 seconds. In a controlled environment with no wind or air flow, one can will linger in the air for hours.

Q: 3. Is this liquid supposed to look like milk?? I have received a bottle today and it is a milky white opaque liquid.

A: Yes, Photographers' Formulary TF-4 Archival Rapid Fixer is milky. Make sure before you add water and after that you mix it very well. After that it will clear.

Q: 4. How to I dispose of the working solution?

A: Although it is best to take photo chemicals to a facility where they can be properly disposed of, most normal chemicals used in processing are no worse than household cleaners that are normally put down our drains. (Bleach, 409, etc.) So use reason and common sense: if you process 200 rolls at a time, dispose of the chemicals properly. If you are doing 3-4 rolls every week or so, you shouldn't worry and pouring them down the sink is fine.

Q: 5. Does this product have an odor?

A: Yes, Atmosphere Aerosol Haze Spray for Photographers & Filmmakers has an odor.

Q: 6. I purchased this product about 4 years ago and never opened it. Would it still be good to mix and use today?

A: If one purchased the Photographers' Formulary TF-4 Archival Rapid Fixer for Black & White Film & Paper ,and never opened it up, and stored it in normal temperatures,(not too warm), it should still work fine. Just to make sure it would be good to do a test in the darkroom, by fixing a paper sample for the normal fixing time, and then turn the lights on to see if it will fog.

Q: 7. How can I test my T4 fixer to see if it is exhausted?Can I use my old test solution I used for regular fix?

A: Most cut a small piece of film and if it doesn't clear in a couple of minutes the fix is exhausted. I just throw away the working solution after going through three litres of developer (xtol) or when the solution no longer removes the magenta stain from the film. Not sure what you mean by the second question; I don't think you should mix older working solutions with fresh.

Q: 8. Hi! Can you fly with this can?

A: I dont think so. it's a under pressure product which not allow to carry to fly.

Q: 9. Does this set off smoke detectors? Ive used fog and haze machines in the past and innow it depends on the sensitivity of the detector, etc. but was just curious about others experiences.

A: Unfortunately, the answer simply depends on the type of smoke detector that is being used. If an ionisation-type or photo-electric/ particle detection smoke detector is used, it can be set off by fog as they sense the fog particles just like smoke. Heat based detectors should be okay. The issue is you may not know which one you have, or the sensitivity of the particle detection smoke detector. If you are using the item indoors, it would be recommended to give your local fire department a call for assistance. They may either be able to assist you with performing a test to see if the item will be an issue for your particular type smoke detector, and/or if they see that the detector will be set off by the item, they may be able to offer to disable the unit and station a fire marshal or fireman in the venue during usage. WE DO NOT RECOMMEND DISABING A SMOKE DETECTOR YOURSELF. This may be illegal, and contacting your local fire station is highly recommended. Otherwise, I would recommend using the item outdoors in an open area (though you may still wish to contact the fire department so neighbors and passers-by do not think there is a fire and still call the fire department at the sight of smoke/haze/fog). If you are shooting in a public venue, I would recommend simply inquiring with the venue as to their rules regarding using smoke/haze.

Q: 10. After manifestation in PMK and fixation and washing for 25 minutes, the Tri-x 400 film turned out to be slightly brown. This is normal?

A: Yes. Pyro developers, like PMK, produce a colored stain on the image. This can be brown or yellowish depending on the film. That stain is why people use Pyro developers; it gives smoother tonal transitions, especially in highlight tones.