Lawn & garden
Resolva 24H Ready to Use Weedkiller dupe
Why pay around £6.50 for Resolva? The bulk active is Glyphosate IPA salt concentrate 360 g/L — 88% less per working litre than a typical shelf pack.
From the retail pack to the active and the mix
1 · Retail
Resolva 24H Ready to Use Weedkiller
1 litre · £6.50 typical snapshot
Water and alkyl glycoside wetter
2 · Active
Glyphosate (diammonium salt)
0.99% on the label
38641-94-0C3H8NO5P·C3H9N
Bulk Glyphosate IPA salt concentrate 360 g/L
3 · Mix
30 ml concentrate + 970 ml water ≈ Resolva 24H RTU
£0.51 per working litre · 88% less than the shelf pack
- Active
- Glyphosate (diammonium salt)
- CAS
- 38641-94-0
- Dupe
- Glyphosate IPA salt concentrate 360 g/L
- Saving
- 88% / 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
“Visible results in 24 hours on paths and drives”
The chemical reality
Classic Resolva 24H RTU (MAPP 18921) is glyphosate diammonium at about 0.99% w/w — not Xpress pelargonic, and about twice the Pathclear 0.46% band. Thirty millilitres of 360 g/L glyphosate concentrate per litre matches that RTU. Read the cap: Xpress / Xtra Fast is a different bottle.
Active vs filler
0.99% Glyphosate (diammonium salt) · 99% carrier / filler — Water and alkyl glycoside wetter
- Typical retail
- £6.50
- 1 litre
- Estimated active cost
- £0.47
- Scaled from bulk £16.99 / 1 litre
- Indicative markup
- 13.9×
- Snapshot maths, not a live shop price
The Marketing Claim & The Catch
A 1 litre pack of Resolva 24H Ready to Use Weedkiller typically retails around £6.50 in lawn & garden. 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: Visible results in 24 hours on paths and drives; Ready to spray — no mixing; and Kills weeds to the root.
The catch: Classic Resolva 24H RTU (MAPP 18921) is glyphosate diammonium at about 0.99% w/w — not Xpress pelargonic, and about twice the Pathclear 0.46% band. Thirty millilitres of 360 g/L glyphosate concentrate per litre matches that RTU. Read the cap: Xpress / Xtra Fast is a different bottle.
- “Visible results in 24 hours on paths and drives”
- “Ready to spray — no mixing”
- “Kills weeds to the root”
Proprietary Blend & Dosage Breakdown
The labelled active is Glyphosate (diammonium salt) at 0.99%. Everything else in the pack is water and alkyl glycoside wetter.
At 0.99% 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 36% Glyphosate IPA salt concentrate 360 g/L, mixed to 30 ml concentrate + 970 ml water ≈ Resolva 24H RTU.
- Labelled active
- Glyphosate (diammonium salt)
- 0.99%
- Carrier
- Water and alkyl glycoside wetter
- Retail pack
- 1 litre · £6.50
The Active Chemical Alternative (Dupe Stack)
The dupe stack is Glyphosate IPA salt concentrate 360 g/L at 36% bulk. Indexed as CAS 38641-94-0, formula C3H8NO5P·C3H9N. Buy it as 1 litre for around £16.99 from Amazon UK.
Working strength: 30 ml concentrate + 970 ml water ≈ Resolva 24H RTU. Indicative cost £0.51 per diluted litre — 88% 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.
- Pesticide: read the label on the concentrate you buy. Gloves, long sleeves, no drift onto plants you want to keep.
- Mix 30 ml of 360 g/L glyphosate into 970 ml of water in a labelled sprayer — about 10.8 g/L of IPA salt, matching the ~1% Resolva 24H RTU band.
- Spray dry leaves until glistening. Do not walk pets on wet paths. Allow several dry hours before rain.
- 1 litre of concentrate makes about 33 litres of 24H-strength spray — thirty-three branded 1 L bottles.
- This is not Xpress pelargonic and not a selective lawn weedkiller. Rinse the sprayer three times; never use the same sprayer for lawn feed afterwards.
Dilution recipe
1 L working batch
Working strength 30 ml concentrate + 970 ml water ≈ Resolva 24H RTU. Educational estimate from the listed ratio — check the SDS before you mix.
Chemical
30 millilitres
Glyphosate IPA salt concentrate 360 g/L
Water
0.97 litres
Carrier / diluent
3% concentrate · 97% 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 brandedResolva | Raw active dupeDupeStack |
|---|---|---|
| Product | 24H Ready to Use WeedkillerAmazon UK search — listing, not a confirmed seller | Glyphosate IPA salt concentrate 360 g/L |
| Pack / unit | 1 litre · £6.50 | 1 litre · £16.99 |
| Active | Glyphosate (diammonium salt) at 0.99%Carrier: Water and alkyl glycoside wetter | 36% bulkC3H8NO5P·C3H9N |
| CAS number | Not disclosed on pack | 38641-94-0 |
| Working strength | Ready-to-use pack | Dilute 30 ml concentrate + 970 ml water ≈ Resolva 24H RTU |
| Cost per litre | £6.50 / L typical pack | £0.51 / L mixed from bulk |
| Headline saving | Baseline | 88% cheaper |
| COSHH / PPE | Follow the branded SDS | Gloves. Chemical-resistant gloves (nitrile or neoprene)Eye protection. Indirect-vent splash goggles — not ordinary spectaclesVentilation. Use outdoors or with mechanical extraction |
Active ingredient and cheaper alternative — FAQ
Is this the same as Resolva Xpress 24H?
No. Xpress / Xtra Fast is pelargonic acid (CAS 112-05-0) — a contact burn-down. Classic 24H RTU is glyphosate diammonium (CAS 69254-40-6). Same ‘24H’ on the shelf, different SDS. See the Xpress teardown for the fatty-acid maths.
Is this the same as Weedol Pathclear?
Same active family (glyphosate) but a stronger RTU. Pathclear is about 0.46% / 4.6 g/L. This 24H bottle is about 1% diammonium salt. Use this teardown for the 30 ml/L concentrate maths; use Pathclear for the weaker 13 ml/L band.
How do you mix the 24H Ready to Use Weedkiller dupe stack?
Pesticide: read the label on the concentrate you buy. Gloves, long sleeves, no drift onto plants you want to keep. Mix 30 ml of 360 g/L glyphosate into 970 ml of water in a labelled sprayer — about 10.8 g/L of IPA salt, matching the ~1% Resolva 24H RTU band. Spray dry leaves until glistening. Do not walk pets on wet paths. Allow several dry hours before rain. 1 litre of concentrate makes about 33 litres of 24H-strength spray — thirty-three branded 1 L bottles. This is not Xpress pelargonic and not a selective lawn weedkiller. Rinse the sprayer three times; never use the same sprayer for lawn feed afterwards.
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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£24.50Save 88% / L
Indicative DIY stack