Household cleaning
Ecozone Washing Machine Cleaner & Descaler dupe
Why pay around £5.99 for Ecozone? The bulk active is Tetrasodium EDTA dihydrate (food/technical grade) — 66% less per working litre than a typical shelf pack.
From the retail pack to the active and the mix
1 · Retail
Ecozone Washing Machine Cleaner & Descaler
250 grams · £5.99 typical snapshot
Citric acid, sodium carbonate and fragrance
2 · Active
Tetrasodium EDTA (chelating descaler)
30% on the label
64-02-8C10H12N2Na4O8·2H2O
Bulk Tetrasodium EDTA dihydrate (food/technical grade)
3 · Mix
50 g per maintenance wash drum dose
£0.90 per working litre · 66% less than the shelf pack
- Active
- Tetrasodium EDTA (chelating descaler)
- CAS
- 64-02-8
- Dupe
- Tetrasodium EDTA dihydrate (food/technical grade)
- Saving
- 66% / L
Saving is per litre of working-strength mix versus a typical pack price, not versus the DIY kit total. Shop prices move — always check the listing.
Label teardown
What the pack promises versus what the label chemistry actually is.
The marketing claim
“Removes limescale, bacteria and detergent residue”
The chemical reality
Ecozone's SDS lists tetrasodium EDTA (CAS 64-02-8) as the primary chelating agent alongside citric acid. EDTA sequesters calcium and magnesium ions that form limescale, stripping them from the heating element without the heat that citric descaling requires. Bulk tetrasodium EDTA dihydrate is food-additive grade and costs a fraction of a foil pouch.
Active vs filler
30% Tetrasodium EDTA (chelating descaler) · 70% carrier / filler — Citric acid, sodium carbonate and fragrance
- Typical retail
- £5.99
- 250 grams
- Estimated active cost
- £1.36
- Scaled from bulk £8.99 / 500 g
- Indicative markup
- 4.4×
- Snapshot maths, not a live shop price
The Marketing Claim & The Catch
A 250 grams pack of Ecozone Washing Machine Cleaner & Descaler typically retails around £5.99 in household cleaning. That is a UK shelf-price snapshot for the maths on this page — not a live shop quote or a manufacturer RRP. Listings, sizes and deals move. The marketing line is that you are buying a finished lifestyle product, not a weighed chemical.
On the pack: Removes limescale, bacteria and detergent residue; Protects the drum, seal and heating element; and Suitable for eco wash cycles.
The catch: Ecozone's SDS lists tetrasodium EDTA (CAS 64-02-8) as the primary chelating agent alongside citric acid. EDTA sequesters calcium and magnesium ions that form limescale, stripping them from the heating element without the heat that citric descaling requires. Bulk tetrasodium EDTA dihydrate is food-additive grade and costs a fraction of a foil pouch.
- “Removes limescale, bacteria and detergent residue”
- “Protects the drum, seal and heating element”
- “Suitable for eco wash cycles”
Proprietary Blend & Dosage Breakdown
The labelled active is Tetrasodium EDTA (chelating descaler) at 30%. Everything else in the pack is citric acid, sodium carbonate and fragrance.
At 30% active, most of what you pay for is carrier and packaging. The brand is selling convenience, fragrance and a label — not a uniquely potent molecule.
Branded working strength is whatever comes out of the bottle. The bulk alternative is 99% Tetrasodium EDTA dihydrate (food/technical grade), mixed to 50 g per maintenance wash drum dose.
- Labelled active
- Tetrasodium EDTA (chelating descaler)
- 30%
- Carrier
- Citric acid, sodium carbonate and fragrance
- Retail pack
- 250 grams · £5.99
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Tetrasodium EDTA dihydrate (food/technical grade) at 99% bulk. Indexed as CAS 64-02-8, formula C10H12N2Na4O8·2H2O. Buy it as 500 g for around £8.99 from Amazon UK.
Working strength: 50 g per maintenance wash drum dose. Indicative cost £0.90 per diluted litre — 66% below a typical branded pack on a per-litre basis, before you reuse leftover bulk.
Follow the mixing method and the supplier SDS. Wear the listed PPE. Do not mix incompatible oxidisers, acids or ammonia.
- Wear gloves — EDTA is a mild irritant in powder form. Avoid inhaling dust.
- For a washing machine maintenance dose: add 50 g to the empty drum (not the drawer) and run a 60 °C cotton cycle. Flush with a short rinse cycle after.
- For a dishwasher clean: add 30 g to the empty base (not the cutlery basket) and run a hot cycle.
- Do not combine with chlorine bleach in the drum — EDTA chelates the hypochlorite catalyst. If you want a separate bleach drum clean, run it in a different cycle.
- 500 g at 50 g per wash is 10 drum doses — roughly 10 Ecozone pouches. Store dry in the sealed bag.
Dilution recipe
1 L working batch
Working strength 50 g per maintenance wash drum dose. Educational estimate from the listed ratio — check the SDS before you mix.
Chemical
50 grams
Tetrasodium EDTA dihydrate (food/technical grade)
Water
1 litres
Carrier / diluent
0% concentrate · 100% water by working volume (solids are dissolved into the water share).
Required PPE
Loading calculator…
Side-by-Side Price & Potency Comparison
Head-to-head comparison
| Measure | Retail brandedEcozone | Raw active dupeDupeStack |
|---|---|---|
| Product | Washing Machine Cleaner & DescalerAmazon UK search — listing, not a confirmed seller | Tetrasodium EDTA dihydrate (food/technical grade) |
| Pack / unit | 250 grams · £5.99 | 500 g · £8.99 |
| Active | Tetrasodium EDTA (chelating descaler) at 30%Carrier: Citric acid, sodium carbonate and fragrance | 99% bulkC10H12N2Na4O8·2H2O |
| CAS number | Not disclosed on pack | 64-02-8 |
| Working strength | Ready-to-use pack | Dilute 50 g per maintenance wash drum dose |
| Cost per litre | £5.99 / pack | £0.90 / L mixed from bulk |
| Headline saving | Baseline | 66% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene) |
Active ingredient and cheaper alternative — FAQ
Is EDTA the same as citric acid for descaling?
Not the same job. Citric acid (CAS 5949-29-1) dissolves calcium carbonate by lowering pH. Tetrasodium EDTA (CAS 64-02-8) sequesters calcium and magnesium ions by chelation — it does not require acid pH and works at lower temperatures. The two are often used together: EDTA chelates; citric dissolves the loosened mineral crust.
Is EDTA environmentally friendly?
EDTA biodegrades slowly in the environment and can mobilise heavy metals in soils. Use within dosing guidance — this is a machine maintenance tool, not a cleaning spray for ponds or gardens. Check your local water authority's guidance if you discharge to a septic tank.
How do you mix the Washing Machine Cleaner & Descaler dupe stack?
Wear gloves — EDTA is a mild irritant in powder form. Avoid inhaling dust. For a washing machine maintenance dose: add 50 g to the empty drum (not the drawer) and run a 60 °C cotton cycle. Flush with a short rinse cycle after. For a dishwasher clean: add 30 g to the empty base (not the cutlery basket) and run a hot cycle. Do not combine with chlorine bleach in the drum — EDTA chelates the hypochlorite catalyst. If you want a separate bleach drum clean, run it in a different cycle. 500 g at 50 g per wash is 10 drum doses — roughly 10 Ecozone pouches. Store dry in the sealed bag.
DupeStack provides chemical concentration data and educational mixing guides only. Wellness pages compare food supplements, not medicines or prescribed treatments. Always review the supplier Safety Data Sheet (SDS) and comply with UK Health and Safety Executive (HSE) and COSHH regulations when handling concentrated substances. Mixing and storage are at your own risk. Some links are affiliate advertisements (Amazon Associates, eBay Partner Network, and Awin when those programmes are live). Commissions do not change listed concentrations or calculator output.
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- Retail pack
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- Raw active
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£17.00Save 66% / L
Indicative DIY stack