Magic Kleen - When nothing else works! - Citramint below

It all started when I was cleaning my house prior to sale, and could simply not clean the shower screen to my satisfaction. Much research followed, and luckily my chemistry training helped narrow potential options. After making many prototypes we arrived at a reasonable stragtegy.

This shower screen was purchased from the local dump recycling center, and was totally covered in scale we believed if we could clean this we could clean anything!
And so it has turned out to be. This shower screen comes from one of North Queensland’s most hard water areas.
 

Scale that appears on shower screens predominantly, but also other glass, is often characterised as calcium scale. The reality is a little different. The scale appears to be a matrix of calcium and silica, so where there is a lot of silica in the water, cleaning is almost impossible, as silica is relatively inert.

The Magic Kleen contains a soft abrasive, and a safe powdered acid . The abrasive exposes the matrix, allowing the active ingredient to attack the calcium component, and at this stage the silica simply collapses.

 "Magic-Kleen” is a non abrasive powder that will not damage glass when used according to directions.

1. Simply wet a non-scratch scourer sponge (usually these are coloured white). If progress is slow because of heavy build up,, don’t be afraid to use a harder scourer say a green nylon but check on an inconspicuous area first.

2. Shake a little of the powder onto the scourer sponge or dip onto the surface of the powder from the bucket to make a wet slurry, and work the surface of the glass.

3. If the problem is severe, keep dipping the scourer into the powder to make a dryer paste.

4. You will notice the surface become smoother and smoother, then simply rinse off.

The product works just as well on marine glass, glass pool fencing, glass balconies which scales regularly due to continually wetting and drying, again, no problem.