Filter Sand

Filter Media and Specialty Products

Filtration media for water treatment projects

Explore Absorb filter sand, support gravel, garnet, anthracite and specialty media for water treatment, wastewater and industrial filtration applications.

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Filter Sand

Filter sand selected for reliable treatment performance

Graded filtration sands for water treatment, wastewater, process filtration and replacement media applications across New Zealand.

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Stand-alone filter sand category

The right sand grade helps the filter do its job properly.

Filter sand is the working media layer used to capture suspended solids and support reliable filtration performance.

The correct grade, depth and supporting layer profile can influence turbidity removal, flow distribution, headloss, backwash behaviour and long-term media performance.

Absorb supplies filter sand for municipal treatment plants, wastewater systems, industrial filtration, refurbishment work and replacement media projects.

Filtration Layer

Filter Sand

Graded sand used as the main working layer in rapid filters and treatment systems.

Replacement Media

Media Changeouts

Filter sand supply for refurbishment, replacement and media top-up projects.

System Fit

Grade Selection

Sand grading should suit the filter design, backwash process and treatment target.

NZ Supply

Project Quantities

Supply options for bags, pallets, bulk bags and treatment plant projects.

Application guidance

Filter sand should be matched to the filter design and treatment duty.

Sand selection is not only about particle size. The filter type, flow rate, backwash system, support layers and treatment objective all influence which media profile is suitable.

For replacement media or plant refurbishment work, the existing media profile, underdrain design and operating history can help confirm what should be supplied.

Absorb can help review specifications, media schedules, project drawings and delivery requirements to support the right filter sand supply.

Mesh size guide

Know your filter sand by mesh size.

Filter sand is often specified by mesh size range. The table below provides a practical guide to common mesh sizes, approximate particle size ranges and typical filtration applications.

Mesh Size Range Particle Size Description Common Applications
4/8 Mesh 4.76 - 2.38 mm Very coarse sand Gravel packing, drainage layers, large particle filtration
7/14 Mesh 2.83 - 1.41 mm Coarse sand Pre-filtration, high-flow systems
8/14 Mesh 2.38 - 1.41 mm Coarse sand Pre-filtration, high-flow systems
14/25 Mesh 1.41 - 0.71 mm Medium coarse sand Multi-layer filtration, moderate flow systems
16/30 Mesh 1.18 - 0.60 mm Medium sand Water filtration, swimming pools, residential filters
20/40 Mesh 0.85 - 0.42 mm Medium to fine sand Swimming pools, finer industrial filtration
40/70 Mesh 0.42 - 0.21 mm Fine sand Slow sand filtration systems
70/140 Mesh 0.21 - 0.105 mm Ultra-fine sand Precision filtration for chemicals and fine particles
Note: Mesh size is a useful guide, but final media selection should also consider filter design, backwash rate, support layers, treatment target and project specification.
Available products

Browse filter sand products below.

Select a product to view details. For project quantities, replacement media or complete filter bed changeouts, request a quote and include your known specification, quantity and delivery location.

Tip: If you are unsure which sand grade is required, send through your media specification, existing filter profile, photos, drawings or treatment application and Absorb can help narrow down the right supply option.
  • QFS1 Coarse Filter Sand
    QFS1 Coarse Filter Sand
    QFS1 Coarse Sand (1.13-2.46 mm, 99.1% Silicon)

    QFS1, with its high silica content exceeding 99%, is essential for specialised applications such as water filtration. It serves as a support layer in multi-layer filtration systems or as a coarse medium in primary filtration systems.
    QFS1
  • FS1 Coarse Filter Sand
    FS1 Coarse Filter Sand
    FS1 Coarse Sand (1.2-2.4 mm, 99.1% Silicon)

    FS1, with its high silica content exceeding 99%, is essential for specialised applications such as water filtration. It serves as a support layer in multi-layer filtration systems or as a coarse medium in primary filtration systems.
    FS1
  • QFS2 Fine Quartz Filter Sand
    QFS2 Fine Quartz Filter Sand
    QFS2 Fine Quartz Sand (0.57-1.13 mm, 99.7% Silicon)

    QFS2, with 99.7% silica quartz content, offers consistent particle size for uniform porosity and efficient filtration. It can be used as a standalone filtration medium or as a support layer in multi-layer filtration systems.
    QFS2
  • FS2 Fine Filter Sand
    FS2 Fine Filter Sand
    FS2 Fine Filter Sand (0.60 -1.20mm, 99.1% Silicon)

    FS2 offers a consistent particle size for uniform porosity and efficient filtration. It can be used as a standalone filtration medium or as a support layer in multi-layer filtration systems.
    FS2
  • FS3 Super Fine Filter Sand
    FS3 Super Fine Filter Sand
    FS3 Super Fine Sand (0.30 – 0.60mm, 99.1% Silica)

    FS3 is an ultra-fine filter sand with a large surface area for trapping small impurities, improving water clarity. Its consistent particle size ensures uniform porosity and efficient filtration. Suitable for multi-layer systems and applications like drinking water treatment, pool filtration, and aquariums.
    FS3
  • FS0 Coarse Filter Sand
    FS0 Coarse Filter Sand
    FS0 Coarse Filter Sand (3–5 mm, 99.1% Silica)

    FS0 is naturally occurring Filter Sand / Pea Metal ideal for a range of filtration applications. Composed primarily of silica, it is durable, chemical stability.
    FS0
 


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