Sequence viewing > Index - Alternative Photo Emulsions - Resource - © Lloyd Godman

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

Storage of photographic chemicals:

Storing chemical bottles in a tray will contain any leakage form the container.
Some chemicals that are sensitive to light like Cyanotpye or Van Dyke Brown need to be stored in a brown bottle in a secure, dark warm, location away from children.

Labeling all chemicals and write a date on it is essential.

Drugstore hydrogen peroxide (which can be used to bleach paper) conveniently provides one with a cheap source of pint and quart-sized brown plastic bottles. These can be recycled as your storage bottles for photochemistry.

Others like liquid light need to be stored in a light tight container and only opened in a safe light.

Some stock solutions can be stored for up to a year.

During storage chemical components can separate out, for instance with Van Dyke Brown, the iron and silver can tend to separate out at different levels in the liquid. Some photographers recommend storing each of the stock solutions separately, but as the mixture matures giving a deeper richer tone with age, it is recommended to leave for at least a day in a combined state. With combined solutions, make sure you gently agitate the solution to mix it before use; failure to do so can result in uneven coating of silver and iron in various areas. While this can produce some interesting effects, they may not be those you desired.

Some chemicals are not compatible and should be stored in different locations.

Safety Points in Brief:

These chemicals can be harmful or fatal if swallowed. · **Silver nitrate causes permanent stains on skin and clothing, it will also cause permanent damage to your eyes if contact is made ** · Avoid getting chemicals on skin or in eyes. · Wash in running water if this does occur, and seek medical help immediately. · Avoid breathing fumes and dust. · If sensitive, wear mask and gloves. · Seek medical attention if adverse reactions occur. · Do not eat, smoke or drink while working with chemicals. Wash hands with soap and water when done.

Want to learn more? - do a workshop or one on one with Lloyd Godman