Janit-X Professional Rinse Aid 5 Litre ? Janit-X Rinse Aid 5 Litre is a rinse aid additive to prevent spots and hazing for a sparkling finish. Janit-X Rinse Aid It is a thin, clear blue liquid, with a blend of specialist surfactants and mild acids in a taint-free aqueous base. Ideal for a sparkling finish on plates, crockery, cutlery, utensils, glassware, glasses and tumblers. Suitable for all automatic dish and glass washing machines in food and catering establishments, including restaurants, bars, hotels, pubs and nightclubs.