Zeiss made long focus triplet ‘apos’ a hundred years ago without using special dispersion or low dispersion glass. Those lenses were also notoriously hard to collimate.
Quite correct, except the glass used WAS special dispersion glass, some of it was highly abnormal for its time. And yes, they were incredibly sensitive to collimation, because their internal curves were very strong. The spherical correction of the lenses can change visibly, if the spacing is changed by as little as 1/100th of a millimeter! Corrosion of the spacers often leads to one or both air spaces becoming too thin. These objectives should NOT rattle in their cells!! If they do, the spacers have corroded and become too thin and must be replaced. A daunting task, if one does not have extensive knowledge of optics, both practical and theoretical.
Zeiss themselves admitted, that these objectives (triplet B type) were so sensitive, they really weren't suitable for amateurs, but should be considered as highly sensitive scientific measuring devices!
The doublet A type by comparison is much easier to work with and in practice, in smaller apertures, is free from visible false color. Its major downside is that it can't be made much faster than about f/17, while the B triplet was commonly f/15 and often f/12.