FosfoKal
Strong acidic descaling sanitizer
available sizes
contact time
The problem
What happens every day without the right product
Oxides and dull welds
Stainless steel spoiled by oxidation and weld marks loses value on the finished part.
Rust to remove
Rust spots on metal parts need targeted chemistry, not abrasives.
Uneven finish
Mechanical cleaning leaves scratches and patchy areas on metal.
The solution
Controlled chemical pickling
The pickling formula removes oxides and scale chemically: clean, uniform metal surface, ready for passivation or coating.
- Pickling and sanitizing in a single step
- Effective even on heavily layered limescale
- Use undiluted: ready to use
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Instructions
How to use it, in 3 moves
- 1
Dilute in the spray bottle following the graduated scale.
- 2
Spray evenly over the surface to be treated.
- 3
Leave to act for the indicated contact time.
- 4
Wipe off with a clean microfibre cloth.
Dwell / contact time
A few minutes, then rinse
Frequency of use
Weekly
Dilution table
| Use | Dilution | Practical dose | Yield per 1 L/kg |
|---|---|---|---|
| Routine maintenance | Tal quale | Spruzzare sulla superficie | — |
Measure ml doses in seconds with a measuring cup or dosing cap.
How to use it? Practical guidePurchase
Choose the size and order
Prices excl. VAT. Free shipping above the threshold shown at checkout.
CHF 16.10
CHF 16.10 / 750 ml · excl. VAT
(CHF 21.47 / L)
Secure payment: Card · TWINT · Apple Pay · Google Pay
Available sizes
Official 4F Services data sheets in Italian where available; other documents are generated from the catalogue pending the official versions.
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