Just to clarify: Lomochrome Purple is not Aerochrome. It is not an infrared-sensitive film, nor is it a slide film. It is an unusual C-41 colour negative film where some colour dyes have been swapped or something like that, so that green renders as pink or purple on the final print. Its spectral sensitivity is about the same as for regular C-41 colour films.
Nevertheless Lomography at the moment actually offers it as "Colournegative Infraredfilm"
(At least in their German Version of their shop. Lomography do not let me access another language version.)