It is best to make only such quantity as may be needed for use at the time, which is 10 or 15 grains.
To Prevent Smoke From Flashlight.
A Flashlight Apparatus With Smoke Trap.
Intensifiers And Reducers:
Intensifier (Mercuric) With Sodium Sulphite, For Gelatin Dry Plates.
The reduction is perfect, with a positive black tone.
Intensifier With Iodide Of Mercury.
For use, dilute with water, flow over the negative till the proper density is reached, and wash, when the deposit will turn yellow. Remove the yellow color by flowing a 5 per cent solution of hypo over the plate, and give it the final washing.