Ask three suppliers for “MBBR media price” and you may get three numbers that differ by 40% — for media that looks almost identical in photos. Buyers usually respond by picking the cheapest cubic metre. That is exactly how a project ends up under-filled, under-performing, or re-ordered at extra freight cost.
This page explains what actually sits behind an MBBR media quotation, how to compare two quotes fairly, and how container loading changes the real price you pay per usable cubic metre.
The per-m³ trap: you buy surface area, not plastic
MBBR media does one job: it gives biofilm a protected surface to grow on. Treatment capacity follows the effective surface area, not the volume of plastic. And surface area varies a lot between models. From our own model range:
| Model | Size | Effective surface area |
|---|---|---|
| MBBR04 | Φ11×7 mm | >1,000 m²/m³ |
| MBBR19 (K3 type) | Φ25×12 mm | >650 m²/m³ |
| MBBR64 | Φ25×4 mm | >1,200 m²/m³ |
| MBBR76 | Φ25×4 mm | >1,600 m²/m³ |
So one cubic metre of a small, high-surface model can offer roughly twice the treatment surface of one cubic metre of a large model. A quote that is 30% cheaper per m³ but delivers half the surface area is not cheaper — it is about 40% more expensive for the same biological capacity.
Fair comparison rule: divide the price per m³ by the surface area (m²/m³). Compare suppliers on price per 1,000 m² of effective surface, with the same model size, and the quotes suddenly become comparable.
The 6 things that actually drive the price
- Raw material. Virgin HDPE keeps density at 0.96–0.98 g/cm³, so carriers fluidise evenly instead of sinking or floating. Recycled blends are cheaper per tonne but vary batch to batch — in density, in hole consistency, and in service life. Ask what the material is, in writing.
- Model and surface area. More holes and thinner walls mean more extrusion precision and more surface per m³ (see the table above). High-surface models cost more per m³ and less per unit of treatment.
- Order volume against container size. Media is light, bulky cargo — bulk density is only about 100–125 kg/m³ depending on model — so freight is charged on volume, not weight. A full container is dramatically cheaper per m³ than a part load (details in the next section).
- Packing. Our standard export packing is woven bags of 0.1 m³ each, which stack tightly and are easy to count and inspect on arrival. Loose or oversized packing wastes container volume that you pay for.
- Destination and trade term. An EXW price and a CIF price to your port are not the same product. Always compare quotes on the same term, and state your discharge port when asking.
- Extras that are easy to forget. Mixed-model loads, custom colours, OEM bag printing, and retention screens or aeration ordered in the same shipment all change the final number — usually in your favour when combined into one container.
How much fits in one container (and why it changes your price)
Standard loading for our HDPE MBBR media in 0.1 m³ woven bags:
| Container | Media volume |
|---|---|
| 20 ft | ≈ 30 m³ |
| 40 ft | ≈ 60 m³ |
| 40 ft HQ | ≈ 70 m³ |
A worked example. Your reactor is 100 m³ and the design filling ratio is 30% — a common range is 15–65% depending on model and load — so you need 30 m³ of media: exactly one 20 ft container. Clean, cheap freight.
If the design says 45 m³, the maths changes: a 40 ft container leaves 15 m³ of paid-for air, while splitting the order into a 20 ft plus LCL (less-than-container-load) usually costs more per m³ than either. At that point it is often cheaper to review the filling ratio with the designer, or to step up the order to a full 40 ft and hold the balance as spare media — carriers do get replaced over a plant’s life. This is the kind of decision we work through with buyers before quoting, because it changes the delivered price more than any discount on the media itself.
If you have not fixed the media volume yet, start with the engineering side: how to calculate MBBR media volume from flow and BOD. Then come back to this page for the commercial side.
A 2-minute checklist for comparing two quotes
- Same model size and hole count? (Φ25×12 mm with 19 holes is the common K3 type.)
- Surface area stated, and is it effective/protected area or a theoretical number?
- Virgin HDPE or recycled blend? Density range stated (0.96–0.98 g/cm³)?
- Packing: bag volume and bags per m³ stated? Container loading in m³ stated?
- Same trade term (EXW / FOB / CIF) and same destination port?
- Price converted to per 1,000 m² of surface area — now compare.
If a quote cannot answer these six lines, the low price is probably hiding in one of them. For the wider budget picture — tanks, aeration, installation — see our MBBR system cost guide.
What to send us for an exact quotation
Media quotations are fast when the sizing data is there. Send:
- Average and peak flow (m³/day), influent BOD/COD and ammonia target
- Reactor volume available, or the media volume if already calculated
- Destination port and preferred trade term
- Model preference, if your design already fixes one
We will confirm the media volume and filling ratio for your reactor, check it against container loading, and quote the configuration that gives the lowest delivered cost — not just the lowest price per m³. A small sample pack can also be arranged first, so your team can check material quality and hydrophilicity before committing.
Request a Project Review · See MBBR media specs & models (PE01–PE10)