>>3247566>but how harmful are chemicals really?Only the fixer is harmful, mostly because of silver.
Dumping the stop bath is like pouring dilute vinegar or lemon juice down the drain, not harmful at all. Developers like X-Tol are in large part ascorbic acid derivatives, essentially Vitamin C.
Hydroquinone and phenidone (ID-11, D-76, Microphen, most developers actually) are very low toxicity, even in prolonged direct contact with the skin. Hydroquinone was even used as a whitening agent in cosmetics.
Metol (Ilford Perceptol, Kodak Microdol X) is a bit more toxic with prolonged use and direct contact with the skin, but even then the worst thing it can give you is slight dermatitis.
