There is only one tray to keep clean. By simply adding wide - mouth containers, additional developers can be used, or added at any time during a working session. By simply replacing the single tray, sheet size can be changed at any time during a working session. Different concentrations of selenium toner can be kept on hand during a working session. Temperature of any solution can be maintained or altered by setting any container or containers in individual water baths.
Human skin receives no chemical exposure whatsoever.
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