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Alternative Photographic Processes - (Hand made photographic -emulsions and processes)

Handling and Measuring Chemicals

Like any chemical process that requires the measuring and mixing of chemicals the more accurate the measurements, mixing and application the more constant the results will be. If you experiment with variations to the chemical mixes, processing etc. maintaining accurate records that allows you to repeat any successful results is essential. Keeping mixing beakers, brushes and other equipment washed and clean after use also gives constancy to the process reducing contamination.

Decanting Chemicals:

Handling chemicals with bare hands is also another dangerous practice, since the chemicals can easily pass through the skin and are absorbed into the bloodstream. Rubber gloves will act as a barrier for your hands.

Some of the base chemicals are fine powders and as these dangerous powders can become airborne, it is good practice to decanter these with a mask on or contained in a fume cabinet. In any case, use a clean decanting spoon specifically marked for this purpose. The usual method is to use a chemical spoon, to take the chemical from the jar to the mixing container, tip it from the spoon into the container until the desired amount is measured. Make sure the containers to place chemicals in are clean and dry so some can be poured back into the stock jar if too much is decanted out into the mixing container. Do not use spoons or containers used to hold food or drink.


Measuring Chemicals:

Electronic scales are very good for measuring chemicals but a good set with the capability of measuring small amounts of chemical can be expensive. Also some have a switch on the to convert the reading from ounces to grams and you need to be careful it is set on the right setting.

A set of mechanical balance style scales with weights can be obtained quite cheaply and are surprisingly accurately.




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