Berkefeld filter

2011
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Product details

The Berkefeld filter is an invention by the German engineer Wilhelm Berkefeld for the purification and disinfection of drinking water. The filter, invented in 1891, is a hollow cylinder made of porcelain with filter candles made from burnt diatomaceous earth. Filters of this type were first successfully used in 1892 during the cholera epidemic in Hamburg. The method invented by Wilhelm Berkefeld is still used today to manufacture filter systems, although with modern materials. In 1892, Wilhelm Berkefeld founded the company Berkefeld-Filter in Celle, which continues to produce systems for drinking water treatment for industries, municipalities, armies, and disaster relief organizations worldwide. The product range includes complex industrial systems, mobile filter units, and small hand-operated filters.

Key specifications

Year
2011
Book cover
Paperback

General information

Item number
9095402
Publisher
Placpublishing
Category
Reference books
Release date
4.7.2018

Book properties

Year
2011
Book cover
Paperback

Voluntary climate contribution

CO₂ emissions
0.5 kg
Climate contribution
CHF 0.11

30-day right of return if unopened
No warranty

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Reference books» category have a defect within the first 24 months?

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  • Placpublishing
    Not enough data
  • 1.Anaconda
    0 %
  • 1.Ariston
    0 %
  • 1.Avery Publishing Group
    0 %
  • 1.Beltz
    0 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

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  • An der Ruhr
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  • Anaconda
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  • Ariston
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  • Avery Publishing Group
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Return rate

How often is a product of this brand in the «Reference books» category returned?

Source: Digitec Galaxus
  • Placpublishing
    Not enough data
  • 1.Beltz
    0 %
  • 1.Eyrolles
    0 %
  • 1.Hachette
    0 %
  • 1.Hanser
    0 %
Source: Digitec Galaxus