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Useful Advice

You don’t need super high-tech tools for the artisanal fabrication of photosensitive emulsion. Nevertheless, it’s best to follow a few basic recommendations concerning the materials or fluids that are used, in order to avoid adding variables of uncertainty!

Choice in containers

In order of preference préférence :

  • stainless steel, like photographic development tanks
  • glass containers
  • plastic cups

Dark entry-vestibule

When fabricating emulsion there long stretches of cooling, drying, or agitation which do not require one’s actual presence in the laboratory. In order to be able to leave the darkroom without risking fogging the emulsion, we can install an opaque entry vestibule. Two dark curtains separated by about a foot or two tight doors should do the trick.

Electro-magnetic stirring / heating

Some of the obligatory stages of a protocol don’t allow, or very marginally, for any direct experimentation.

  • This is the case, for example, in the first maturation where the solutions are mixed constantly during 30 minutes in a hot-bath at 70°C, without any possible adjustments to duration or temperature in function of the way the solution might be evolving.
  • Such are the types of long duration or work phases where the precision and rigor of a machine are welcome.

For Gelification

For gelification, we can pour the emulsion into s8 box covers in order to obtain a thickness of 3mm (two boxes of 90m are fit for 170ml of emulsion).

Rinsing with distilled water

It’s important to rinse all utensils (recipients, stirrers, etc.) with distilled water, to avoid any unforeseen contamination.

Temperature regulated bain-marie (water-bath)

Is needed for several phases: nucleation, chemical and physical maturation, as well as the ainsi que le couchage de l'émulsion sur le support film.

en/emulsion/useful_advices.txt · Last modified: 2022/09/15 11:07 by pierre