Ilford is one of the more popular makers of B&W film, papers and chemistry As such, they have a section called the Learning Zone to explain the variety of products that they purvey. Back in the Spring, Ilford developers were covered - they have ten film developers alone.
As such, they would like the buying public to know which developer is best for a given situation or desired outcome. Some developers are intended for hand processing, others for machine processing. Some are powders, other come as ready to mix liquids. There is a specialist developer, Phenisol, for X-ray plates, sheet film and their Ortho Plus film.
Read on!