Moersch MT2 is a direct carbon toner for warmtone black-and-white photographic papers with a high silver chloride concentration. Neutral- and coldtone papers can be toned indirectly.
The image tone can be adjusted by altering either the dilution or toning time. Toning for short durations in dilutions of 1+30 and higher, the will increase maximum blacks and will make the image tone turn colder. As toning progresses further, the initial image tone first changes to a colder brown and then slowly shifts towards warm brown and red brown tone. If you want a continuous brown black image tone, you have to choose a dilution between 1+100 and 1+200.
In a completely filled storage container, the working solution has a shelf life of a couple of weeks for a dilution of 1+10 and a couple of days for a dilution of 1+200. If you prepare the working solution with distilled water instead of tap water you increase its shelf life significantly.