It is said (Haist, "Modern Photographic Processing") that the development activity of chlorohydroquinone can be closely matched by a mixture of 95 percent hydroquinone and 5 percent metol. That doesn't mean all of chlorhydroquinone properties in the developer are matched by this combination, but it may be worth a try. In this case it would mean 3.8 grams of hydroquinone and 200 mg of metol per liter.
It is said (Haist, "Modern Photographic Processing") that the development activity of chlorohydroquinone can be closely matched by a mixture of 95 percent hydroquinone and 5 percent metol. That doesn't mean all of chlorhydroquinone properties in the developer are matched by this combination, but it may be worth a try. In this case it would mean 3.8 grams of hydroquinone and 200 mg of metol per liter.
Unfotunately using Metol & Hydroquinone as a substitution doesn't give the same warm tones which is the hallmark of Chloroquinol, and there would be far better Warm tone MQ or better still PQ formulae to use instead.
For many the Holy Grail of developers is a well balanced Super Dine Grain negative developer formulae. Tht's only my second choice the first is a good warm tone developer, and I found that many years ago min ID-78 which Ilford once sold commercially. The current Warmtone dev is probably very similar except the Sodium Carbonate is replaced by a smaller quantity of Potassium Carbonate and NaOH or KOH.