My TEA stock concentrate recipe gives a good black D MAX, similar to D-72 (DEKTOL).

The stock concentrate lasts for years. The working solution lasts for a few hours.

Triethanolamine
Metol

Ascorbic Acid

Benzotriazole (for a black or blue black image tone).

Potassium Bromide (for a warmer image tone).

PM me for the recipe and mixing instructions.