Pool filter beads

Conventional filter material such as sand and granules is generally porous with an irregular structure which makes it extremely vulnerable to growth of fungi, bacteria, algae and also leads to calcifications. Bacteria settles on uneven surfaces and in open pores of the filter material and multiply endlessly.Once these contaminants take effect, they become permanent, and can’t be removed during the backwashing process. Inevitably the use of expensive and environmental harmful chemicals need to be introduced to the process.

SiLibeads glass filter beads is a revolutionary product that has all the advantages over a conventional filter material.  With a roundness specification of  > 98%, a homogenous filter bed made of SiLibeads glass filter beads has outstanding filtration properties. Suspended particles are completely removed during the backwashing process and the filter material will stay as clean and effective as they are new.

NSF/ANSI/CAN 50

We are the first glass beads manufacturer in the world to achieve NSF/ANSI/CAN 50 standard certification for our Type S glass beads. This standard was developed by experts from a group of manufacturers, health authorities and users and evaluates the suitability of equipment for swimming pools, spas, hot tubs and other recreational water facilities. This ensures that certified equipment meets the highest standards of performance, such as the health effects of materials, performance, labeling and user instructions. This is achieved through strict test specifications with rigidly defined criteria. For filter media, for example, filtration performance with contaminated water (45 NTU ± 5 NTU), cleaning during backwashing after filtration with contaminated test water, and pressure drop with clean (± 2 NTU) and contaminated water (45 NTU ± 5 NTU) are tested here. In addition to application-related parameters, general material properties such as grain distribution, non-uniformity (Cu) and roundness are also evaluated.
Both our SiLibeads Type S 0.40 – 1.20 mm and SiLibeads Type S 0.50 – 1.00 mm successfully meet the requirements, which is expressed by the receipt of the certificates and the listing on the NSF website. This proves the best suitability of our SiLibeads Type S glass beads as filter media for swimming pools, spas, whirlpools and similar applications.

SAVE ENERGY

Reduced backwash times

SAVE BACKWASH WATER

Up to 40% less water

SAVE TIME

Longer time between filtration cycles

SAVE MONEY

No abrasion, lower running costs

REDUCTION OF CHEMICAL AGENTS

Lower chlorine oxidation demand

LOW RISK OF BIOFILM

Smooth surface prevents biofouling

OPTIMIZED FILTER BED

Stable filtration performance

CLEAN INSTALLATION

Dustfree and safe filling

LONG-LASTING DURABILITY

High crushing strength through high density

SMALLER CARBON FOOTPRINT

Less energy, less backwash water, long lifetime

  • even, geometric shape
  • smooth, closed surface
  • high material hardness and surface quality
  • low wear
  • absolutely no dust content
  • uneven shape
  • porous to very porous surface
  • low material hardness and surface quality
  • high abrasion, excessive wear
  • high dust content (undersize, zero grain) even in case of new material

Time for a revolutionary filter media

Whether 50-meter lane, whirlpool or little private pool. No sports pool or spa can do without a high-performance filtration system. But not all filter materials are equally suitable for keeping the water clear and hygienic. This also applies to quartz sand and granules. Because of their irregular surface structure, they offer heavenly living conditions for all kinds of germs, fungi and pathogens: In the worst case, they turn the filter that is supposed to keep the water clean into a health hazard. What are the weak points of conventional filter materials?

Pool owners must regularly perform what is known as back washing. During this process, the direction of flow of the water in the filter changes, coarse dirt particles are loosened and drained away via the sewer of the house. The dirty water is then replaced by fresh water. However, algae, germs and smaller dirt particles can never be completely removed from conventional filter materials, even by filter flushing. Therefore, the material must be replaced at regular intervals. In many cases, disinfectants are also used to minimize health risks for bathers. This is not only costly: In many cases, the chemical substances also pollute the environment.

FAQ – Pool filter beads

What is the alternative to sand and granules?

The certified and multiple award-winning glass filter beads SiLibeads mark a new era in the cleaning of public and private swimming pools. Not only can they significantly increase the performance of conventional filter systems. Their use also reduces operating costs – and the plant gets a significantly better climate balance.

How do SiLibeads work?

Unlike sand or granules, SiLiBeads glass filter beads have the smooth, even surface like a marble. This means that germs, fungi, algae or bacteria can neither settle nor multiply there: The notorious biofilm does not even develop. Thanks to their even and geometric shape, the glass filter beads also form a much more homogeneous filter bed than conventional filter materials. This not only increases filter performance by up to 25 percent.

How long do SiLibeads last?

Theoretically for a lifetime. Because of their smooth surface, SiLibeads glass filter beads can be cleaned effectively, unlike sand and granules. In any case, the beads need to be changed much less frequently, if at all, than conventional filter materials.

Does the use of SiLibeads reduce operating costs?

Absolutely. SiLibeads clean much better during filter flushing than conventional filter materials. Pool operators therefore save up to 40% percent energy and hot water during cleaning. This effect is further enhanced by the fact that the filter performance of SiLibeads is significantly higher than that of sand or granules, so that fewer backwashes are required overall. In addition, pool operators can largely dispense with the use of additional disinfection and maintenance agents. This also reduces costs.

How sustainable are glass filter beads compared to sand and granules?

The longer SiLibeads are in use, the better their carbon footprint compared to conventional filter materials. Once again, the advantage lies in the longer service life as well as the energy and water savings during filter rinsing. But the sustainability factor also plays a major role in production: The glass filter beads are made from the flat glass that accumulates as production waste, for example in window manufacturing. In this process, Sigmund Lindner GmbH works together with three certified partners.

Are SiLibeads Glass beads certified to NSF 50?

Yes, the company Sigmund Lindner in Germany is the first glass beads manufacturer in the world to achieve NSF/ANSI/CAN 50 standard certification for our Type S glass beads. This standard was developed by experts from a group of manufacturers, health authorities and users and evaluates the suitability of equipment for swimming pools, spas, hot tubs and other recreational water facilities. This ensures that certified equipment meets the highest standards of performance, such as the health effects of materials, performance, labeling and user instructions. This is achieved through strict test specifications with rigidly defined criteria. For filter media, for example, filtration performance with contaminated water (45 NTU ± 5 NTU), cleaning during backwashing after filtration with contaminated test water, and pressure drop with clean (± 2 NTU) and contaminated water (45 NTU ± 5 NTU) are tested here. In addition to application-related parameters, general material properties such as grain distribution, non-uniformity (Cu) and roundness are also evaluated.
Both, SiLibeads Type S 0.40 – 1.20 mm and SiLibeads Type S 0.50 – 1.00 mm successfully meet the requirements, which is expressed by the receipt of the certificates and the listing on the NSF website. This proves the best suitability of filter pool beads SiLibeads Type S as filter media for swimming pools, spas, whirlpools and similar applications.