The best argon gas cylinders, compared.
Top pick: SWP WG/1368 60 L disposable – Highest score, on 160 UK reviews and the lowest shelf price, for a short disposable MIG session with an unstated mix. Best value: Sealey MIGMIX2.2 430 g – 430 g of stated 84/16 at about £57.17, against about 100 g on the cheaper Sealey disposables, if your regulator is already M10. Updated October 2026.
It is not a regulator, a hose, or a valve sold on its own. On amazon.co.uk the usual choice is a small disposable or a filled cylinder, and the first check is whether the label is pure argon or an argon/ mix. A useful listing states the gas, a quantity that is not water capacity, an outlet that matches the regulator, and whether the bottle arrives full. A 60 litre claim on a bottle of about 1.3 kg is a cartridge. The [argon gas cylinder buying guide](/hub/soldering-and-welding/argon-gas-cylinder/sub/argon-gas-cylinder-buying-guide) sets the order: process and metal, then real contents, then the thread. BOC’s shielding-gas brochure warns that its carbon dioxide levels are too high for austenitic stainless and points to mixes kept under about 3% for that job. BS EN ISO 14175:2008 classifies I1 as argon.
It is not a regulator, a hose, or a valve sold on its own. On amazon.co.uk the usual choice is a small disposable or a filled cylinder, and the first check is whether the label is pure argon or an argon/ mix.
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Personal buying guide
Question 1 of 2
What are you welding?
The SWP WG/1368 is a disposable argon/CO2 bottle listed at 60 litres and 1.28 kg, priced at £17.99. Across 160 amazon.co.uk reviews it averages 4.6 stars, which is the only large review sample in this set. Reviewers describe welding times of about 5 to 10, 10 to 15 and 20 minutes, so the 60 litre figure behaves like a short cartridge rather than a workshop cylinder. The listing never states the argon and CO2 percentages, so you cannot treat it as 80/20 or any other named mix. One UK review said the fitting was smaller than a normal regulator and mentioned a 4 mm hose against an 8 mm hose on the welder. The outlet thread is not stated. It is the strongest evidence here for a single short MIG session, and a weak choice if you need a known mix or more than a few minutes of arc.
Pros
Cons
Best for: A single short mild-steel MIG job when you accept an unstated mix and an unnamed disposable thread.
Less suitable: TIG, aluminium, stainless, or any session that needs a stated mix and more than a few minutes of gas.
Specifications
Common questions
Does the listing state the argon and CO2 percentages?
No. The title says Argon CO2 and the gas volume is given as 60 L. The file does not state a mix ratio.
Is a regulator included?
The file does not list a regulator. One UK review said the fitting was smaller than their normal regulator.
How long do reviewers say the gas lasts?
UK reviews in the file describe about 5 to 20 minutes of welding, including runs of about 5–10, 10–15, and 20 minutes. That is review evidence, not a timed test.
Sealey’s MIG/ARG/100 is the only disposable in this set sold as argon rather than an argon/CO2 mix, at £31.68. The listing pairs a 60 litre gas-volume claim with a 100 g included component, and marks a duration of about one hour as approximate. The amazon.co.uk line is 3.7 from 16 reviews. Of the two reviews in the file, one buyer was pleased and one said the bottle arrived empty and lasted two or three minutes. The thread is not named, only that it fits Sealey and other welders or regulators. That empty-arrival report matters more than the star average on a sample of 16. Use it when you specifically need a small pure-argon cartridge and you can return a bottle that is flat. It is not a substitute for a filled argon cylinder.
Pros
Cons
Best for: A short TIG or aluminium attempt where this is the only pure-argon disposable in the set.
Less suitable: Mild-steel MIG that wants a CO2 mix, or a buyer who needs a named thread and a larger review base.
Specifications
Common questions
Is this pure argon or a CO2 mix?
The listing says argon, model MIG/ARG/100. It does not state a CO2 percentage. The included component is given as 100 g.
Will it fit other welders?
Sealey says it fits Sealey and other makes of welder or regulator. The file does not name the thread.
What do the reviews in the file say?
The star line is 3.7 from 16. The file has two UK reviews: one pleased buyer, and one who said it arrived empty and lasted 2 or 3 minutes.
Sealey’s MIG/MIX/100 states an 80% argon and 20% CO2 mix, which sits in the M21 band suppliers use for mild-steel MIG, at £32.11. Like the pure-argon Sealey, it prints 60 litres and a 100 g component, and an approximate one-hour duration. The star line is 3.4 from five reviews. One of the two reviews in the file only says it is a gas cylinder. The other says two bottles ran out while welding car arches. The thread is not named. Five reviews cannot settle whether that short life is typical, but the car-arch report matches a 100 g fill rather than a workshop cylinder. It is a named 80/20 cartridge for a short steel job, not a bottle for a panel, and the approximate one-hour line should not be planned as arc time.
Pros
Cons
Best for: One short mild-steel MIG repair when you want a stated 80/20 mix and already have a compatible regulator.
Less suitable: Arch or panel work, TIG, aluminium, or a purchase that needs more than five reviews.
Specifications
Common questions
What mix does Sealey print?
CO2 20% and argon 80%, fill 60 L, included component 100 g. The seller’s duration of about 1 hour is marked approximate.
What do the reviews in the file say?
The star line is 3.4 from 5. One review only says it is a gas cylinder. The other says two bottles ran out during car-arch welding.
Is the thread named?
No. Sealey says it fits Sealey and other makes of welder or regulator. The thread name is not stated.
The Gray Eagle listing is the only bottle in this set sold as full, with a stated 1.2 cubic metres of 82% argon and 18% CO2 in an 8 litre cylinder at 150 bar. The seller includes a mini regulator and names the outlet as L 21.8 × 1/14, which is not BS 341 No. 3. At £169.99 it is also the heavy option: 16 kg full and 11 kg empty, 140 mm across and 673 mm tall. There is no amazon.co.uk review line, so the fill, the 2030 validity date and the EN 1964-1 line are seller statements rather than owner reports. That missing evidence is the main limit. If the bottle arrives as described, 1.2 cubic metres is a different class of gas from a 60 litre disposable. You still need to confirm that the L 21.8 fitting matches your regulator before you treat this as a normal British workshop cylinder.
Pros
Cons
Best for: A buyer who wants a filled 82/18 cylinder with the included mini regulator and can confirm the L 21.8 outlet.
Less suitable: Anyone who needs BS 341 No. 3, pure argon, or a purchase backed by UK reviews.
Specifications
Common questions
What gas mix does the listing state?
Argon 82% and CO2 18%, in an 8 L bottle with 1.2 m³ stated, at 150 bar.
Is a regulator in the box?
Yes. The listing says the bundle includes a mini gas regulator. The outlet is stated as L 21.8 × 1/14, not as BS 341 No. 3.
Are there amazon.co.uk reviews in the file?
No customer-review line and no review text. There is no star rating to quote.
The Sealey MIGMIX2.2 is one disposable stated as 430 g and 2.2 litres of 84% argon and 16% CO2, at 110 bar and 20°C, with an M10 outlet, priced at £57.17. Item weight is 2.91 kg. There is no review line, so the fill is a listing claim rather than owner evidence. Set against the Sealey 60 litre bottles at about £32 for a stated 100 g component, the printed gas mass is several times larger for less than twice the money. The catalogue dimensions of 1 × 1 × 1 cm conflict with that 2.91 kg weight and should not be read as the size. M10 will not mate with a BS 341 No. 3 regulator. It is the stronger stated-gas buy among the disposables that name a mix, provided your regulator is already M10. The missing reviews remain a real gap, so this is best value on the printed fill, not a tested runtime.
Pros
Cons
Best for: Mild-steel MIG with an M10 regulator, when you want more stated gas than a 100 g cartridge and do not need four bottles.
Less suitable: Buyers without an M10 regulator, TIG, aluminium, or anyone who will only trust a reviewed listing.
Specifications
Common questions
What is the stated fill?
430 g and 2.2 L of 84% argon and 16% carbon dioxide, at 110 bar at 20°C. Item weight is 2.91 kg.
Which thread is printed?
M10. Sealey says it fits Sealey and other makes of welder or regulator.
Is there a star rating?
No customer-review line in the file. There is no star rating to quote.
The Sealey MIGMIX2.24 is four disposable bottles, each stated as 430 g and 2.2 litres of 84% argon and 16% CO2 at 110 bar and 20°C, with an M10 thread, at £192.57. Pack weight is 11.6 kg. There is no customer-review line, so the file does not confirm that the four bottles arrive full or that M10 matches a particular welder. The catalogue dimensions say 1 × 1 × 1 cm, which cannot describe an 11.6 kg pack, and that conflict stays unresolved. On the printed numbers, four times 430 g is more gas than four of the 100 g Sealey disposables, at roughly £48 a bottle against £57.17 for the single MIGMIX2.2. Buy the pack only if M10 is already your regulator thread and you will use four bottles. It is still a set of disposables, not a refillable BS 341 cylinder.
Pros
Cons
Best for: A mild-steel MIG user who already runs M10 disposables and wants four 84/16 bottles in one order.
Less suitable: A first bottle, a BS 341 workshop cylinder, TIG, or aluminium.
Specifications
Common questions
How many cylinders are in the pack?
Four. Each is described as 430 g and 2.2 L of 84% argon / 16% CO2. Pack weight is 11.6 kg.
What thread does Sealey state?
M10. The seller says it fits Sealey and other makes of welder or regulator.
Why is the size field not 2.2 L?
The catalogue dimensions say 1 × 1 × 1 cm. That conflicts with the 2.2 L claim and the 11.6 kg weight. Both are stored. They are not averaged.
BricoLoco’s disposable is listed as 1 litre of 86% argon and 14% CO2, weighing 1.2 kg, at £78.29. The seller says the regulator, clamps and hose are a different listing, and the outlet thread is not stated. There is no review line. The description talks about MIG on carbon steel, low-alloy steel and iron, and also stainless steel, but it does not give an aluminium specification. BOC’s shielding-gas guidance treats CO2 levels in this range as too high for austenitic stainless and points to mixes kept under about 3% CO2 for that work, so the stainless sentence conflicts with that guidance. A 1 litre disposable at this price is a small amount of gas with an unclear connection. It only makes sense if you already own the matching regulator and you are welding mild steel, not stainless on the strength of the product text.
Pros
Cons
Best for: A mild-steel MIG user who already has the separate regulator and accepts a 1 litre disposable.
Less suitable: Stainless, aluminium, TIG, or anyone comparing price per usable litre of gas.
Specifications
Common questions
What mix is in the bottle?
The listing says 86% argon and 14% CO2, in a disposable 1 litre bottle weighing 1.2 kg.
Does it include a regulator?
No. The seller says the regulator, clamps and hose are another listing.
Does the listing say it is for aluminium?
A question line asks about aluminium. The description talks about MIG on carbon steel, low-alloy steel, iron, and also stainless steel. It does not give an aluminium specification.
The 60STEEL-580-A listing asks £306.07 for a cranberry steel cylinder rated at 60 cubic feet, and it says the cylinder ships empty. The valve is CGA580 with a 3/4 inch NGT inlet, which is the North American argon outlet, not BS 341 No. 3. Weight is 13.2 kg, with a diameter of about 7 inches and a height of about 28.5 inches. There is no customer-review line. A bullet says DOT approved, which is not a UK fill promise, and this comparison has no UK supplier price for putting gas in the shell. You would still need gas, a matching regulator and a supplier willing to fill a CGA580 cylinder. Until those are confirmed, the price buys a container. Do not treat the 60 cubic foot figure as gas you can weld with on delivery day.
Pros
Cons
Best for: A buyer who already has a CGA580 regulator and a confirmed route to fill this shell in the UK.
Less suitable: Anyone who wants shielding gas on delivery, or a BS 341 cylinder for a British regulator.
Specifications
Common questions
Does this cylinder arrive full of argon?
No. The listing says all cylinders ship empty and tells the buyer to ask a local supplier about filling.
Which valve is fitted?
CGA580, with a 3/4 inch NGT inlet thread stated. The listing does not say BS 341 No. 3.
Is there a review score?
The file has no customer-review line. There is no star rating to quote.
We compared eight argon gas cylinder listings on amazon.co.uk. The score is a desk assessment of those listings. It is not a laboratory gas analysis, a timed weld, or a check that a seller’s EN or DOT line is a UK approval. Prices, star lines and stated contents are the figures on those listings. A very small review sample, or no review line, receives little evidence credit. Conflicting catalogue dimensions are not averaged away. A seller duration marked as approximate is not treated as a measurement. The weights below sum to 100.
Gas identity
20%A named gas, and a stated argon/CO2 ratio where the bottle is a mix. An unstated ratio, or a shell with no gas, loses most of this block.
Contents honesty
20%A quantity that matches the object, in grams, litres of gas or cubic metres, plus a full-or-empty statement, and no catalogue size that contradicts the weight.
Outlet and regulator
15%A named thread, and a regulator only when the listing includes one. An unstated thread scores low. CGA580 is named, and it is not BS 341 No. 3.
UK review evidence
30%amazon.co.uk stars, review count and the specific complaints in the file. No review line scores at the bottom of this block. A report of an empty bottle is a deduction.
Value
15%Shelf price against the gas the listing actually describes, for the job that gas can do. The cheapest bottle is not automatic. An empty shell scores near zero.
Choose the process and the metal before the star rating. Carbon-steel MIG wants an argon/CO2 mix. TIG and aluminium want argon. Then check the real quantity, the outlet thread, and whether the bottle arrives full.
An argon gas cylinder in this comparison is a pressure bottle that supplies shielding gas for MIG/MAG or TIG. It is not a regulator, a hose, a wall bracket, or a valve sold on its own. Carbon-steel MIG in this set is usually an argon/CO2 mix. TIG, and MIG on aluminium, is argon. BOC’s shielding-gas brochure warns that its Argoshield carbon dioxide levels are too high for austenitic stainless and points to mixes kept under about 3% CO2 for that job. BS EN ISO 14175:2008 classifies I1 as argon.
On the SWP and small Sealey bottles, 60 litres sits on a bottle of about 1.3 kg, and the Sealey lines also name 100 g. SWP reviewers reported about 5 to 20 minutes. Sealey’s one-hour line is marked approximate.
TIG and MIG on aluminium want argon. The only disposable in this set sold as argon, with no CO2 percentage stated, is the Sealey MIG/ARG/100. An 80/20 or 82/18 mix is a steel-MIG gas.
The 60 cubic foot listing says the cylinder ships empty. CGA580 is the North American argon outlet, not BS 341 No. 3. This comparison has no UK fill price and no evidence a British supplier will fill that valve.
Process comes first. Carbon-steel MIG in this set is an argon/CO2 mix. TIG, and MIG on aluminium, is argon. Stainless is a separate caution: BOC’s shielding-gas brochure treats its Argoshield CO2 levels as too high for austenitic stainless and points to mixes kept under about 3% CO2. The BricoLoco listing mentions stainless at 14% CO2, which conflicts with that guidance. A named ratio is the next line. The Sealey MIG/MIX/100 prints 80/20. The Gray Eagle listing prints 82/18.
Read the quantity that matches the object. Grams, litres of gas, or cubic metres are the gas. An 8 litre figure on the Gray Eagle listing is water capacity, and 1.2 cubic metres is the gas, at 150 bar. A catalogue size of 1 × 1 × 1 cm on the Sealey 2.2 litre listings conflicts with 2.91 kg and 11.6 kg, so those dimensions are not the bottle size. The thread is the part that either fits or does not. UK industrial argon is BS 341 No. 3, 5/8 inch BSP right-hand.
Three typical situations, each with a recommendation from this comparison.
You want one short job done and you can live with a disposable. The SWP WG/1368 is about £17.99, with 4.6 from 160 reviews, and reviewers describe about 5 to 20 minutes of welding. The mix ratio and the outlet thread are not stated. Skip it for a named mix, TIG, aluminium, or more than a few minutes of arc.
A cartridge runs out mid-panel, so you want a filled cylinder with a cubic-metre figure. The Gray Eagle listing states 1.2 m³ of 82/18 at 150 bar, with a mini regulator, at about £169.99. There are no amazon.co.uk reviews, and the outlet is L 21.8 × 1/14, not BS 341 No. 3.
TIG, and MIG on aluminium, needs argon. In this set that is the Sealey MIG/ARG/100 at about £31.68, 3.7 from 16 reviews, with a 60 litre and 100 g claim and no CO2 percentage stated. One review says a bottle arrived empty. It is a small cartridge, not a filled argon cylinder.
For one short mild-steel MIG session, the top pick is the SWP WG/1368 at about £17.99. It has 4.6 from 160 amazon.co.uk reviews, the only large review sample here, and reviewers describe about 5 to 20 minutes of welding. The argon/CO2 ratio and the outlet thread are not stated, so it is a weak choice when you need a known mix. For more stated gas among disposables that name a mix, the best value is the Sealey MIGMIX2.2 at about £57.17: 430 g and 2.2 litres of 84/16, M10, 110 bar, and no reviews. The Gray Eagle 8 litre bundle is the only listing sold as full, at about £169.99, with no review line and an L 21.8 outlet. None of these scores is a lab gas analysis, and none of these listings states BS 341 No. 3.
SWP WG/1368 60 L disposable
Highest score, on 160 UK reviews and the lowest shelf price, for a short disposable MIG session with an unstated mix.
Sealey MIGMIX2.2 430 g
430 g of stated 84/16 at about £57.17, against about 100 g on the cheaper Sealey disposables, if your regulator is already M10.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources and the amazon.co.uk listings in this set, last checked on 17 October 2026.
This page contains affiliate links. If you buy through them, we may earn a commission at no extra cost to you. Prices and review counts are from amazon.co.uk listings. We did not lab-test these cylinders.
