BIOL/MBIO/PBIO 5364

CHEMICALS USED TO DEVELOP ELECTRON MICROSCOPY FILM

Kodak Developer D-19:

· Metol 2.0 gram

· Sodium sulphite (anhydrous) 90.0 grams

· Hydroquinone 8 grams

· Sodium Carbonate (Anhydrous) 45.5 gms or (monohydrated) 52.5 gms

· Potassium Bromide 5.0 grams

· Water to make 1 litre.

· (Later this was reformulated as D19b and was a standard developer with a variety of uses.)

Kodak Developer D19b / Ilford ID-19

· Metol 2.2 gram

· Sodium sulphite (anhydrous) 72.0 grams

· Hydroquinone 8.8 grams

· Sodium Carbonate(anhydrous) 48.0grams

· Potassium Bromide 4.0 grams

· Water to make 1 litre.

Ilford Developer PQ current version is ID-72

· Phenidone 0.22 gram

· Sodium sulphite (anhydrous) 72.0 grams

· Hydroquinone 8.8 grams

· Sodium Carbonate(anhydrous) 48.0grams

· Potassium Bromide 4.0 grams

· IBT 1% soln (Benzotriazole) 10ml

· Water to make 1 litre.

From a photography blog. Note: We accept NO responsibility for the accuracy of these numbers, but as developing chemicals become more difficult to find, we wanted to archive this.