BLUM MANUFAKTUR 100 ml screen cleaner with 30 × 30 cm microfibre cloth

The method, which is the useful part of this listing

Switch the device off. Let it cool. Remove loose dirt. Then spray the cloth — not the screen — and clean.

Four steps, published by the maker, and each of them prevents a specific failure:

• Switching off makes the dirt visible against a black panel.
• Letting it cool stops the fluid evaporating into streaks.
• Removing loose dirt stops a cloth dragging grit across the surface, which is how fine scratches happen.
• Spraying the cloth stops fluid running down the bezel into the electronics, which is the failure this shelf actually causes.

No other listing here publishes any of it.

The formula

Stated as gentle, and specifically for matte screens — which mark more readily than glossy ones. What it does not do is name alcohol or ammonia, the two substances that dissolve anti-reflective coatings. That declaration appears on only one product in this catalogue.

The cloth

30 × 30 cm, washable, reusable. Smaller than the 40 × 40 cm cloth elsewhere on this shelf, and washable rather than disposable — which over a few years is the difference between one cloth and a drawer of them.

The volume

100 ml, the smallest here. For a screen cleaned monthly, that is a long time; for a household of devices, less so.

Availability

On sale from 10 € to 15 € on the German, French, Italian and Spanish Amazon stores at the time of checking.

Listed but with no offer on the American and British Amazon stores — the reference exists there and nobody is currently selling it.

Prices and availability are what Keepa reported on the date this page was updated; both move.