Mix the Elon, sod. sulfite and pot. iodide as a stock solution and add the sod. carbonate just prior to use. This may best be done by utilizing 20ml of a15% solution. In this case a 50X stock solution could be compounded of the developer and its preservative, and would give a good stock concentrate that would dilute 20ml A, the Elon, 20ml B to 960ml water.

This developer is said to give a 'soot and chalk' tonality to the image, which I take to mean a very high highlight contrast that could prove to be a problem. However you must remember that when this was formulated condenser enlargers were the norm, and with them their inherent Callier effect of blocking of the highlights.

Recommended starting times are,

Kodak's Plus-X - 12.0min @ 70F

Kodak's TMX 100 10.5min.@ 70F