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Copper sulphate and lime mixture

Updated: 23 October 2026

You are looking at a title that says 5 L or 10 L and reading it as a ready fungicide for trees and fruit. The copper sulphate and lime mixture in this amazon.co.uk set is two dry pouches, not a bottle of spray. Both kits sit in our [copper sulfate comparison](/hub/diy-supplies/copper-sulfate), and neither file prints a MAPP number. A home mix is not an HSE authorisation. This page does not give a mixing method, a water volume, a crop dose, or a spraying timetable. Prices are the stored shelf figures, not a live check on 20 October 2026. A qualifying purchase can earn us a commission at no extra cost to you. Loose crystals stay on the [buying guide](/hub/diy-supplies/copper-sulfate/sub/copper-sulfate-buying-guide).

You are looking at a title that says 5 L or 10 L and reading it as a ready fungicide for trees and fruit. The copper sulphate and lime mixture in this amazon.co.uk set is two dry pouches, not a bottle of spray.

Our top picks

Generic Copper sulphate and lime kit, 10 L title

Best overall

Generic Copper sulphate and lime kit, 10 L title
6.9/10about £14.97
View offer
Generic Copper sulphate and lime kit, 5 L title

Alternative

Generic Copper sulphate and lime kit, 5 L title
5.9/10about £9.97
View offer
MAIGORAY 1 kg copper sulphate pentahydrate

Best value

MAIGORAY 1 kg copper sulphate pentahydrate
8.6/10about £7.97
View offer
On this page
  1. 1.What the 5 L and 10 L titles actually contain
  2. 2.Lime plus copper, not a loose crystal pack
  3. 3.Why a home mix is not an authorisation
  4. 4.What to do with the pack you already opened

What the 5 L and 10 L titles actually contain

The smaller kit is titled 5 L and priced at £9.97, rated 4.5 from two ratings. The bullets say two dry pouches: 50 g copper sulphate and 50 g hydrated lime, unit count 100 g. Packed in the Ribble Valley is a packing note, not an authorisation. Hydrate, assay, and a CLP block are absent. The larger kit is titled 10 L at £14.97, 5.0 from one rating and no review text, unit count 200 g. Do not treat the highlights as a certificate for 100 g of each. The image in the file matches the 5 L kit. Do not divide £9.97 by 5 or £14.97 by 10.

Lime plus copper, not a loose crystal pack

These kits are a different product from the loose blue crystals. The 1 kg bucket at £7.97 is pentahydrate with a formula line. It is not a lime kit, and £9.97 for 100 g of pouches is not a bargain against £7.97 for a kilogram of crystals. The smaller kit does call out hydrated lime as its own sealed pouch. If you wanted crystals only, leave this page. The copper pouch’s hydrate is not stated on either kit, so you cannot assume CuSO4·5H2O from the loose-crystal rows. A listing question on the 10 L kit asks whether mixing is easy. The bullets say separate pouches simplify preparation. No review confirms that, and this page will not fill the gap with a method. Copper oxychloride and copper hydroxide are different substances.
Generic Copper sulphate and lime kit, 10 L title

Testsieger

Generic Copper sulphate and lime kit, 10 L title
6.9/10about £14.97
View offer

Why a home mix is not an authorisation

Plant protection products must be authorised before they are marketed or used. A gardener’s review is not an approval, and supplying a home-made remedy can be illegal. Mixing on your own allotment is not a clearance this page can give you. One UK review on the 5 L kit describes a spray before mildew. This page does not repeat that method. The amateur garden database has a historic page for Bordeaux Mixture, MAPP 07162, Vitax Limited, 85 g/kg copper, expiry 30 November 2015. That record is not these ASINs. Do not use an expired product. The live check is the amateur garden database. Northern Ireland can differ from Great Britain.

What to do with the pack you already opened

If the pouches are already open, the copper salt is still on the Fisher pentahydrate sheet: harmful if swallowed, serious eye damage, very toxic to aquatic life, signal word Danger. These files print no CLP block and do not state the hydrate. A missing block does not mean the pouches are mild. This page will not invent a classification for the hydrated lime. Do not pour leftovers down a drain, onto soil, or into a pond. Eyes and spills are on the handling page. If a product is no longer authorised, HSE points amateur users to the local council for disposal. That is not a mixing instruction.

Common questions

Is the 5 L kit five litres of liquid?
No. The title says 5 L solution. The bullets say two dry pouches, 50 g copper sulphate and 50 g hydrated lime, and the unit count is 100 g. The price is £9.97. Do not turn that into a price per litre. You are buying measured dry ingredients, not a ready mix.
What is in the two pouches, and what is the 10 L kit’s unit count?
The 5 L title is 50 g copper sulphate and 50 g hydrated lime. The 10 L title, £14.97, has a unit count of 200 g, with 50 g pouches of each component in the highlights and no review text. Do not treat the highlights as a weighed certificate for 100 g of each.
Does the listing say whether the copper pouch is pentahydrate?
No. Hydrate and assay are absent on both kits. The loose crystal listings that state pentahydrate are a different product. Do not copy CuSO4·5H2O from the 1 kg bucket onto these pouches because both are sold as copper sulphate.
Is this the same thing as loose blue crystals plus a bag of garden lime?
Only in the loose sense that one pouch is copper sulphate and one is hydrated lime. The kits are pre-measured dry pouches at 100 g or 200 g unit counts, not a 1 kg crystal bucket plus a separate bag of garden lime you chose yourself. The 1 kg listing does not include lime. Compare crystals on the buying guide if lime is not what you wanted.
A review mentions spraying before mildew. Does that make the kit lawful?
No. One UK review on the 5 L kit describes that use. The rating line is 4.5 from two. HSE does not treat a review as an approval, and neither file prints a MAPP number. A home-made spray is not authorised because a neighbour’s allotment notes sounded confident.
I have seen a product called Bordeaux Mixture with a MAPP number. Is that these pouches?
The database record for Bordeaux Mixture, MAPP 07162, is a historic Vitax Limited product, 85 g/kg copper, with an expiry of 30 November 2015. It is not either of these kits. An expired product is not a current authorisation, and this page does not tell you to use it. Check the live amateur database for whatever you actually hold.

Related pages

Best copper sulphate

Copper sulfate

Copper sulphate buying guide: hydrate, grams and job

Copper sulphate footbath listings, rates and waste

Copper sulphate safety handling before you open it

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Listings stored 20 October 2026.

  1. HSE: garden and allotment pesticides (retrieved 20.10.2026)
  2. HSE: active substance register (retrieved 20.10.2026)
  3. HSE: amateur garden pesticide database (retrieved 20.10.2026)
  4. NHS: poisoning (retrieved 20.10.2026)
  5. GOV.UK: report water pollution (retrieved 20.10.2026)
  6. GOV.UK: pollution prevention for businesses (retrieved 20.10.2026)
  7. Fisher Scientific UK: copper(II) sulphate pentahydrate safety data sheet, part C/8520 (retrieved 20.10.2026)