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Did Milton sterilising fluid (Sainsbury's) shrink?

Size FactsDid it shrink? Yes
Before1000 ml
After500 ml
−50.0%smaller
Price per 100 ml · observed+34.1%Shelf price £4.40 → £2.95, as recorded by the source.

Before you paid £0.44 per 100 ml; after, £0.59 per 100 ml: 34.1% more for the same amount.

How big a cut? The largest of 7 documented baby cuts; a bigger cut than 98% of all 1,366 cases in the library. See the biggest cuts →

When
2026 · reported 15 Aug 2026
Country
United Kingdom
Brand
Sainsbury's
Category
Baby
Source
allsupers.co.uk

Source and evidence

Milton 500ml Sterilising Fluid: 1000 ml → 500 ml — Shrinkflation | Allsupers | Allsupers allsupers.co.uk

Source fetched 2026-10-21. All 59 Allsupers cases.

Sainsbury's replaced the 1 litre bottle with a 500 ml one. The price fell from £4.40 to £2.95, less than the size, so the price per litre rose 34%. Found by Allsupers' automated check of Sainsbury's listings: the old listing disappeared and a smaller pack of the same product appeared (new pack since 15 August 2026); regular price £4.40 before, £2.95 after.

Evidence
Typeautomated supermarket price tracker (Allsupers register; retailer listings, regular prices recorded)
Confidencemedium
Size cut alone, at the old price+100.0%

Check the math in the calculator or compare old and new unit prices.

Against official inflation: ONS CPI (UK) “food products n.e.c.” changed +2.9% (12 months to Aug 2026, a broad match for this category). This pack’s price per millilitre changed +34.1%, 31.2 percentage points above the official rate, using the shelf prices the source recorded. Every case is compared the same way in the ShrinkRadar Index.

What the source says

“Before: Milton Sterilising Fluid 1L (Sainsbury's), size 1000 ml, regular price £4.40, price per unit £4.40/l. Now: Milton 500ml Sterilising Fluid (Sainsbury's), size 500 ml, regular price £2.95, price per unit £5.90/l. First detected: 15 August 2026. New pack since 15 August 2026.”

Store brand: this is a Sainsbury's own-label product. See store-brand shrinkflation across retailers.

More from the UK: the UK Shrinkflation Tracker has all 175 documented cases, sortable and filterable.

More from Sainsbury's

All 3 Sainsbury's cases →

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Cite this case

ShrinkRadar, “Did Milton sterilising fluid (Sainsbury's) shrink? 1000 ml → 500 ml”, https://shrinkradar.com/cases/milton-sterilising-fluid-sainsbury-s-uk-2026.html, accessed 2026-11-05. Original source: Milton 500ml Sterilising Fluid: 1000 ml → 500 ml — Shrinkflation | Allsupers | Allsupers (https://allsupers.co.uk/research/shrinkflation/ean_swap/16826).

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