[Translate to Englisch:] Ruwac Industriesauger DS1220 saugt Papierstäube und Pilze im Zentrum für Bucherhaltung in Leipzig.

Restoring antique books – with an industrial vacuum cleaner

Customer: ZfB Leipzig
Extracted material: Mould spores
Industry: Other
Vacuum cleaner: DS 1220 dust class H

The Zentrum für Bucherhaltung (ZFB - Centre for Book Preservation) in Leipzig specializes in repairing valuable antique books. These books are often stricken by mould, which finds an ideal breeding ground on the paper and the glues used. The ZFB correct this damage by disinfecting infected areas or treating them using gamma rays. Then the employees remove the residue using a thorough, careful dry cleaning process. Customers of the ZFB include libraries and archives alongside bibliophiles in their own homes.


The goal of the ZFB is to offer a higher standard in mould removal and book preservation, while ensuring excellent occupational protection. Because of this, the mouldy residues collected during cleaning needed to be reliably extracted.


Personnel use erasers, brushes or a Ruwac vacuum cleaner with a dust class H filter (HEPA filer) to mechanically remove the moulds and spores. The filter keeps out mould spores with a diameter of just 2 to 5 µm, with a maximum transmittance of only 0.005%. This means that only a maximum of five of every 10,000 particles extracted will re-enter the ambient air. 9,995 particles will be caught in the filter.

Each work station at the book restoring company is equipped with a vacuum system, and employees wear face masks while they work. The Ruwac vacuum they use to clean the books is fitted with a fine suction brush, which conserves the paper and binding but efficiently picks up dust and mould and traps it in the filter.

The extremely fine filters used on the extraction systems and vacuum cleaners and the high retention rates of the filter are essential in mould removal, because moulds and mould spores (apart from two rare species) are not a direct health hazard; however, they are potential allergens. This means that anyone coming into contact with the mould could develop an allergy, which could have unpleasant consequences as this type of microbe is found almost everywhere.

Our references in other sectors

[Translate to Englisch:] Ruwac Industriesauger DS2520 für den StaubEx-Bereich saugt Asche einer Biomasseheizung bei Bentheimer-Holz in Bad Bentheim.

Bentheimer Holz

An operator of biomass heating units uses mobile vacuum cleaner to empty the ash containers used in contract-operated systems. The vacuum cleaner can often remain on the truck, thanks to its excellent suction power.

[Translate to Englisch:] Ruwac Industriesauger mit Drehstromantrieb DS1400 für den GasEx-Bereich saugt Giftstoffe auf

Bremerhaven Fire Brigade

A “fire-service vacuum cleaner” needs to be especially flexible, since the fire department handles and extracts so many different liquid and dust media while it works (including flammable and explosive materials).

[Translate to Englisch:] Ruwac Absauganlage saugt Knochenmehl im Krematorium in Hamburg.

Krematorium Hamburg

A central extraction system in a crematorium is used to clean the floors. The suction lines run through three storeys and are 150 metres long.

[Translate to Englisch:] Ruwac Industriesauger DS2 saugt Holzspäne bei Steinway & Sons in Hamburg.


Over 90 Ruwac vacuum cleaners keep things clean at the company that crafts “the best pianos and grand pianos in the world” The range of equipment in use reflects Ruwac's portfolio of DustEx vacuum cleaners since 1979.

[Translate to Englisch:] Ruwac Industriesauger DS4150 saugt Steinstäube und Kiesel bei den Karl-May Festspielen in Bad Segeberg.

Stump Spezialtiefbau – Karl-May Festival

Two Ruwac DS 4150 extracted fine drilling dust produced during reinforcement work at the natural setting of the Karl-May Festival for several months. The vacuum cleaners were set on the ground, while the suction line was placed in the rock face.

[Translate to Englisch:] Ruwac Industriesauger DLS1000 für den GasEx-Bereich saugt brennbare Flüssigkeiten in der Uniklinik Düsseldorf.

Düsseldorf University Clinic

A Ruwac vacuum cleaner is stationed in the cogeneration plant of the Düsseldorf University Clinic, and is used to collect flammable liquids like heating oil or petrol so they can be disposed of.

[Translate to Englisch:] Ruwac Industriesauger DS1220 saugt Papierstäube und Pilze im Zentrum für Bucherhaltung in Leipzig.

ZfB Leipzig

A Ruwac vacuum cleaner with HEPA filter delivers precision in removing mould from valuable antique books – while protecting restoration personnel.

Ruwac stands out for its customised, perfectly-tailored solutions.

Can’t find what you are looking for? Please feel free to contact us.

to contact persons