Use with Bluefire Police, microfilms, and Kodak Technical Pan. Gives unacceptably flat images on ordinary films. 

Shelf life of the concentrate is approximately six months in a full, tightly capped glass or PET bottle, less than one week in a partly full bottle. Refrigeration considerably prolongs shelf life. Normal color is pale yellow. Concentrate that has begun turning pink or red is oxidizing and should be discarded.

This Ilford formula works like D-76, but does not change pH over time. Use the same time and temperature regime as you would with D-76, and you will get negatives that are indistinguishable from what D-76 would give you, but with more consistency week after week.

It has also been posted on the Internet, along with some initial speculation, later abandoned, that it may be the original formula for Harvey's 777 Panthermic, which was introduced commercially in 1938. The speculation was based on this formula's use of 7 grams each of three ingredients. The Internet article is fascinating, and can be seen here: unblinking eye 777 article.

It is not possible for us to know the formulation of Harvey's 777 Panthermic, as originally sold by Defender, later by Dupont, and currently by BPI. That formula was never made public. The powder mixture of 777 Panthermic has a very different appearance from the powders that make up this developer and the 777 definitely contains carbonate, which this does not. This does not detract from the usefulness of Germain's developer. It has a very long shelf life, and gives outstanding images on most black and white films. 

Developing times vary according to the film you use, and you should experiment with times between about 9 and 18 minutes. Agitate 30 seconds initially, then 10 seconds each minute thereafter.