The accumulation of scale, that is to say of limestone, in a toilet bowl, is related to the hardness of the water and the repeated flow of it over the porcelain. The phenomenon is accentuated by the sometimes imperceptible leaks of the flapper seal of the flushing mechanism. No commercial cleaning product manages to remove limescale when it is encrusted. It must then take the major means: hydrochloric acid. This product must be handled with maximum protection because, misused, it can be extremely dangerous. It is to be avoided in the pit toilet skeptic.
- Rubber gloves
- Dishwashing brush
- Abrasive dish sponge
- Glazier's knife (laurel blade)
1. Hydrochloric acid can cause serious skin damage (burning of the skin). Put on long, thick rubber gloves. Wear a long-sleeved shirt on which you will put the gloves on. Also wear eye protection. It is essential to protect yourself against possible splashes of acid. Also wear a respirator if the room can not be properly ventilated.
2. Take a sprayer with no destination indication or label. Fill it with acid carefully. Close the sprayer. After use transfer the remaining acid into its original bottle. Never store it in an unlabeled sprayer stating its contents. Given the low value of the sprayer, it is best to dispose of it after use.
3. Spray the acid on the areas to be descaled. Insist on the most dirty parts. Leave on for at least 15 minutes. Repeat the operation several times. Beware of the release of toxic vapors! Ventilate as much as possible and preferably wear a respirator.
4. Spread the acid with a dishwashing brush, emphasizing hard-to-reach areas, such as the inside rim of the bowl. Watch out for splashing!
5. Scrape off the chalky deposits with an abrasive sponge for the dishes. You will discard it after use.
6. If the scale is resistant to the abrasive sponge, scrape the limestone with a spatula (painter's knife) or even better with a glazier's knife. The blade "laurel leaf" of it follows the curve of the bowl and can overcome the largest deposits.
7. Pull the flush several times to thoroughly rinse the bowl. For the bowl bottom, empty the water with a pipette before pouring acid. Leave it on before brushing the bottom of the bowl, then flush it several times.
8. Place an anti-scale block in the bowl. Replace it regularly. Regular maintenance of the bowl can also be done by periodically pouring hot white vinegar.
Hydrochloric acid is very corrosive and can cause serious skin and eye damage:
- Wear thick rubber gloves and a long-sleeved shirt
- Wear pants and closed shoes
- Put on full protective goggles
- Wear a respirator
- Transfer the remaining acid from the sprayer into the original container and close it securely
- Discard sprayer, brush and abrasive sponge after use
- Keep the can out of the reach of children (high cabinet, never under the sink!)
In case of accidental contact with the mouth, the skin or the eyes, consult the precautions of use carried on the can.
(photos / visuals: © DIY-Prod, except special mention)
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