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Eliminate Film and Darkroom Use

darkroom

No more waiting in line to get into the darkroom. No more expensive film to buy. No more headaches — and experiment delays — when the developer is not working. No more worrying if photographic chemicals are still good or have expired.

For chemiluminescent and fluorescent Western blot detection, the Odyssey® Fc System:

  • Saves time by eliminating the guesswork of multiple exposures
  • Saves money by getting rid of expensive film and the hazardous waste of film processing
  • Does away with saturation and blown-out bands
  • Produces a single digital image with one-button acquisition to replace a stack of time-consuming multiple exposures

Hazardous Waste Issues with Film Processing

With film development, here are some of the environmental impact factors to be considered:

  • Many photographic solutions have high chemical and biological oxygen demand (COD and BOD). These chemical wastes are often treated with ozone, peroxide or aeration to reduce the COD.
  • Since silver concentration discharge is very tightly regulated, recovery systems do reduce waste but require additional resources of time and water usage to ensure compliance.
  • Many photographic chemicals use non-biodegradable compounds, such as EDTA, DTPA, NTA and borate. EDTA, DTPA, and NTA are very often used as chelating agents in all processing solutions, particularly in developers and washing aid solutions. Water containing these chelating agents can leach metal from water treatment equipment as well as pipes. This is becoming an issue in Europe and some parts of the world.
  • Borates, such as borax (sodium tetraborate), boric acid and sodium metaborate, are toxic to plants, even at a concentration of 100 ppm. Many film developers and fixers contain 1 to 20 g/L of these compounds at working strength.
  • In some darkrooms, a popular bleach is potassium hexacyanoferrate (III) (common name potassium ferricyanide). This compound decomposes in the waste water stream to liberate cyanide gas. Other popular bleach solutions use potassium dichromate (a hexavalent chromium) or permanganate. Both ferricyanide and dichromate are tightly regulated for sewer disposal. In order to meet the regulation, the solution must be diluted 20,000 times or more. All of these popular black and white bleaches are damaging to the environment.
  • Developing agents are commonly hydroxylated benzene compounds or aminated benzene compounds, and they are harmful to humans and experimental animals. Some are mutagens. They also have a large chemical oxygen demand (COD).


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