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Dupla Duresin SI 1.000 ml

Dupla Duresin SI 1.000 ml

  • Regenerable anion exchanger
  • Reduces silica concentration
  • High silicate selectivity
  • Effective against algae
In stock, only 2 left
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34.
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€ 34,90 / l
incl. 19% VAT
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Description

Dupla Duresin SI is a regenerable, basic anion exchanger with excellent silicate selectivity. It was specially developed to bind residual silicates in the permeate of reverse osmosis systems. With a capacity of up to 10,000 mg silicate per 1,000 ml, it offers an effective solution for aquariums where high levels of silicic acid in tap water can be a problem. Even with a reverse osmosis system, which has a retention rate of 95 %, a low concentration of silicic acid remains in the pure water, which can already lead to algae problems. The Dupla Duresin SI makes it possible to further reduce this concentration and thus improve the water quality in the aquarium.

Features

  • Dupla Duresin SI offers high silicate selectivity
  • Regenerable for long-lasting use
  • Ideal for aquariums with high silica content in tap water
  • Effective binding of up to 10,000 mg of silicate per 1,000 ml
  • Optimal for use in reverse osmosis systems

Product Safety

Hazard statements according to GHS

Hazard pictogram: Corrosion (GHS05)

Signal word: Danger

Contains: Styrene-divinylbenzene copolymer with trialkylammonium groups in OH form

  • H318 Causes serious eye damage.

Safety statements according to GHS

  • P280 Wear protective gloves/ protective clothing/ eye protection/ face protection
  • P305+P351+P338 IN CASE OF CONTACT WITH EYES: Rinse cautiously with water for several minutes. Remove any contact lenses if present and easy to do. Continue rinsing.
  • P310 Immediately call a POISON CENTRE/ doctor.

Dupla

Dupla

Dupla is one of the brands of the family-owned company Dohse Aquaristik, which has stood for innovation and tradition in aquaristics since 1949. The Dupla brand focuses on creating the most ideal natural environment for aquarium animals, benefiting both the animals, aquarists, and retailers. The company is committed to values such as reliability and consistency, backed by 110 years of experience. With a wide range of products and a deep understanding of the needs of animals, Dupla has established itself as a reliable partner in the pet trade industry.

Manufacturer information

Manufacturer
Name Dohse Aquaristik GmbH & Co. KG
Street Otto-Hahn-Str. 9
City 53501 Grafschaft-Gelsdorf
State Rheinland-Pfalz
Country Deutschland
E-mail info@dohse-aquaristik.de
Website dohse-aquaristik.com/DE

General information

Item no.
121.0029.01
EAN 4011444805621
Weight 0,81 kg
Shipping weight 0,85 kg

Questions and answers about Dupla - Duresin SI - 1.000 ml

Do you have questions about this product? Ask other customers or our support team!

Hello, can I use Duresin SI directly in the external filter?
Translated from German
Heinrich C.
Dec. 2025
Sven Breitenbach
Dec. 2025
Support
Dupla Duresin SI is only suitable for RO systems and not as a filter material in an external filter. Used directly as filter material, the resin would be exhausted too quickly, depending on the silicate level. A better choice here is, for example, JBL SilikatEx Rapid: https://www.aquasabi.de/JBL-SilikatEx-Rapid-400-g
Translated from German

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