Čelisťový drtič BB 51

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Čelisťové drtiče
BB 51 / BB 100 / BB 200 / BB 300

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Preparation of Soil, Sewage Sludge and Sediment Samples - BRW

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"the sample"

No. 28
Think big but grind fine!

No. 27
Sample Preparation in Biology and Medical Science

No. 15
Preparation and testing of glass an ceramics

No. 05
Crushing: " We learnt it from nature"

No. 03
Comminution: "It all started with the impact and friction stone"

Nr. 08
Qualitätskontrolle und Probennahme

Nr. 10
Probenvorbereitung von Abfall- und Umweltproben

Nr. 11
Die neuen Schlagrotormühlen von RETSCH-für viele Produkte geeignet

Nr. 13
Aufbereitung und Untersuchung von Baustoffen

Technické zprávy

Preparation of Soil, Sewage Sludge and Sediment Samples in a Wastewater Treatment Laboratory
The preparation of a mixture of organic and inorganic samples holds some difficulties: whereas sand, clay and stones can usually be ground to homogeneous samples with suitable laboratory mills, the high energy input can cause samples with organic components such as fat or starch to cake. Carsten Bunn, a laboratory technician at the waste water treatment laboratory BRW, has to deal with this problem every day. He treats samples which are taken from the sand traps of the wastewater treatment plants and consist of exactly that mixture. The sediments of household and industry waste water not only contain sand, clay or leaves but anything that people nowadays dispose of through the sewer system: cellulose, hair and especially food residues.

Size reduction within the context of sample preparation
In general “size reduction” is taken to mean the disintegration of solid substances by mechanical forces without altering their state.