* CALGON PT POWDER OT SODIUM HAXMETAPHOSPHATE ISUSED IN HARD WATER AREAS TO MINIMISE,THE NEGATIVE EFFECTS OF HARDNESS OF WATER IN DYEING AND PRINTING PROCESSES.
* HARDNESS OF WATER IS CAUSED BY CALCIUM AND MAGNESIUM BEING PRESENT IN THE WATER USUALLY AS A RESULT OF DISSOLVED LIMESTONE FROM THE SURROUNDING LAND.
* HARD WATER IF UNTREATED CAUSES CONSIDERABLE DULLING AND WEAKENING OF VIRTUALLY ALL DYE TYPES APPLIED BY DYEING, PRINTING OR PAINTING PROCESSES.
* ADDITION OF SMALL QUANTITIES OF CALGON PT TO WATER IN HARD WATER AREAS WILL NULLIFY THE NEGATIVE EFFECTS BY "WRAPPING UP" THE CALCIUM AND MAGNESIUM SALTS.
* CALGON PT NEED NOT BE USED IN SOFT WATER AREAS OR WHERE HARD WATER HAD BEEN SUBJECTED TO A SOFTENING TREATMENT.
* A GOOD GUIDE AS TO WHETHER YOU AREIN A HARD WATER AREA IS THE TENDENCY OF THE METAL ELEMENTS IN KETTLES TO "FUR UP" AND DIFFICULTY IN GENERATING A FROTH WHEN WASHING WITH SOAP.