Lightweight and specialty fillers
Lehmann&Voss&Co. is a German company which has been offering chemical and mineral specialties since 1894. The company is represented by us in the Benelux. They are ISO certified.

Hollow ceramic spheres
We offer a complete range of hollow ceramic spheres, both grey and off-white.
Hollow ceramic spheres ( cenospheres) are characterized by very high thermal and mechanical stability.
Features and benefits of the cenospheres are:
- reduced density / reduced weight of final products
- non-combustible
- chemically inert
- temperature resistant up to 1200°C
- excellent acoustic- and thermal insulation
- improved flow- and working properties
- improved mechanical properties including impact strength and dimensional stability
- improved thermal-shock resistance
- no water absorption under pressure

Hollow ceramic spheres (Cenospheres)
Other hollow ceramic spheres we provide are cenospheres in grey and off-white.
Cenospheres are high-quality ceramic hollow microspheres characterized by a high
degree of fineness and highest mechanical resistance. Due to the fine particle size, Cenospheres are predestined for use in coatings as insulating lightweight filler.
Features and benefits are:
- excellent acoustic- and thermal insulation
- reduced density / reduced weight of final products
- improved flow- and working properties
- improved mechanical properties including impact strength and dimensional stability
- improved thermal-shock resistance
- no water absorption under pressure
- non-combustible
- chemically inert
- temperature resistant up to 1200-1600°C

Glass bubbles (Omega Bubbles)
In the category Glass Bubbles we offer you Omega Bubbles, which are made from recycled glass.
Omega-Bubbles are high-quality multi-cellular hollow glass spheres, serving as functional lightweight fillers. Omega-Bubbles are characterized by excellent chemical, mechanical, and thermal properties. The multi cellular high-stability structure is generated in a unique process. The use of high-quality raw materials ensures the pure white colour of Omega-Bubbles.
Features and benefits are:
- non-combustible
- excellent thermal insulation properties due to low thermal conductivity
- temperature stability up to 900°C
- highest hydrolytic stability
- excellent acoustic absorption
- low electric conductivity
- coarse texturing for excellent adhesion
- environmental-friendly manufacturing process
- 100% recyclable
- reduced density / reduced weight of final products
- improved flow- and working properties

Wollastonite
Wollastonite is a rod shaped calcium metasilicate named after the physicist Wollaston. It's a natural occurring white acicular mineral. It is inert, has low loss on ignition, no water solubility and a low efficient of linear thermal expansion.
Wollastonite is available in aspect-ratio of 3:2 to 20:1, from 8 μm to 1000 μm. It’s also available modified with various coatings as per customer needs and are sold as Fillex.
The product is fire resistant and extremely alkali-resistant.
Features and benefits of Wollastonite are:
- (micro-)reinforced properties
- resistant to high temperatures
- improvement of adhesive strength
- anticorrosive agent due to alkaline potential
- odourless
- 100% mineral origin