--- title: "HiPP formula expiration date, storage and batch codes" description: "How long an opened pack lasts, where the best-before date and lot code are printed, what the letter L means, and how to check your own batch." url: https://milkatlas.com/guides/preparation/hipp-storage-and-expiry/ language: en dateModified: 2026-09-25 --- Guide · Preparing and using HiPP # HiPP storage, expiry dates and batch codes Written by [Kseniia P.](https://milkatlas.com/about/kseniia/) and [Tatum G.](https://milkatlas.com/about/tatum/) Written with AI assistance. Published 22 September 2026 · Updated 25 September 2026 Medically reviewed [Dr. Jill Palko](https://milkatlas.com/medical-review/) · MD, FACOG · [Registration NPI 1093033011](https://npiregistry.cms.hhs.gov/provider-view/1093033011) · 8 October 2026 Next review due 8 October 2027 ## The answer Every HiPP powder this site records says the same thing about an opened pack: use it within 3 weeks, stored dry and at room temperature rather than in the fridge. An opened ready-to-feed bottle keeps 24 hours in the fridge instead. The best-before date and the lot code are printed on the pack itself, not on its artwork, and under EU law that lot code usually begins with the letter L. ## Key takeaways - 3 weeks after opening, on all 36 powder packs this site records: there is no variation to look up. - Powder goes in a cupboard, not the fridge; an opened ready-to-feed bottle goes in the fridge for 24 hours. - The UK growing-up bottle is the exception at 72 hours resealed. - EU law says a lot code is preceded by the letter L unless it is clearly distinguishable, which is why HiPP batches read like L-099191. - A batch is only ever cleared or condemned by the official list for your market, not by a seller and not by us. ## In this series - [Preparing and using HiPP · hub]() - [HiPP recalls and safety · page]() - [How to prepare HiPP formula · guide]() - [HiPP scoop size and water ratio · guide]() - [HiPP ready to feed · hub]() *The base of a tin, where HiPP prints the date and the batch details.* ## How long does an opened HiPP pack last? 3 weeks, and that is not a figure you need to look up per product: every one of the 36 powder packs this site records prints the same one. (Source 1) (Source 2) Store the pack dry, closed and at room temperature. HiPP's instruction is a cupboard, not a fridge, and damp powder is the thing the instruction is guarding against. (Source 1) (Source 2) Evidence · Manufacturer claim The 3 weeks and the storage conditions are HiPP's, for its own packs. Nothing on the label explains what happens after 3 weeks, and no public standard sets that figure, so it is the maker's judgement about its own product. (Source 1) (Source 2) ## And an opened ready-to-feed bottle? 24 hours, in the fridge at no more than 6 °C, unwarmed, with the cap back on. That is the rule on 10 of the 11 liquid packs here. (Source 3) The exception is the British growing-up bottle, which allows 72 hours resealed. HiPP gives the longer figure without explaining it, and a toddler milk is a different product from an infant formula, but HiPP does not say that is the reason. (Source 4) ## Where is the date, and how do you read it? On the pack rather than in the artwork. The German boxes reserve a field marked MHD, short for mindestens haltbar bis, and print the line that unopened the pack keeps at least until the date shown; on a tin the date is usually struck into the base or the rim. (Source 2) (Source 1) A European pack writes the day before the month, which is worth knowing if you are reading it in a country that does the opposite. The official recall alerts spell the month out in words, so if a date matters, that is the place to read it without ambiguity. (Source 7) Our view Do not feed a baby formula that is past its best-before date. On most foods that date is about quality; on infant formula it is the date the label's vitamin figures are held to, and a newborn is the wrong person on whom to find out how much margin the manufacturer left. ## What is the batch code, and what does the L mean? It marks the lot the pack came from, which is what a recall names. EU law requires an indication identifying the lot and says it shall be preceded by the letter L, unless the code is clearly distinguishable from everything else on the label. (Source 5) That is why HiPP batch codes read like L-099191, the format an official alert used when three batches of a HiPP starter pack were withdrawn in 2019. (Source 6) The exception is real, though. The 2026 alert on a HiPP baby food jar named batch B49311, with no L in front of it, which the directive allows. (Source 7) (Source 5) Evidence · Regulation The lot mark is a legal requirement rather than a HiPP convention, set by Directive 2011/91/EU, and the responsibility for determining and affixing it sits with the producer, manufacturer or packager. (Source 5) ## How do you check your batch against a recall? Against the official list for your market. In the United Kingdom that is the FSA's food alerts; the United States, Canada, Germany and the Netherlands each have their own, and our recall page carries all five with the batches each alert named. (Source 8) (Source 6) (Source 7) A seller's page is not that list. Nor is this page: we record what the official alerts say and when we last checked them, and the alert is the thing that clears or condemns a batch. (Source 8) ## Products mentioned - [HiPP Dutch Stage 1](https://milkatlas.com/formula/combiotik/hipp-dutch-stage-1/) NL2472-03 · 800 g tin · Sold - [HiPP German PRE ready to feed](https://milkatlas.com/formula/ready-to-feed/hipp-german-pre-ready-to-feed/) 2227-05 · 200 ml bottle · Where to buy ## Questions parents ask ### How long does an opened tin of HiPP last? 3 weeks, and the same 3 weeks on every HiPP powder pack this site has recorded, so there is nothing to look up per product. ### Should an opened tin go in the fridge? No. HiPP's instruction is to store the pack dry and at room temperature, with the lid closed. A fridge is humid, and damp powder clumps and spoils faster than dry powder in a cupboard. ### How long does an opened ready-to-feed bottle keep? 24 hours in the fridge at no more than 6 °C, unwarmed, on 10 of the 11 liquid packs here. The British growing-up bottle allows 72 hours resealed instead, and HiPP does not explain why the two differ. ### Where is the best-before date on a HiPP pack? On the pack rather than in its artwork: the German boxes reserve a field marked MHD, and on a tin the date is usually struck into the base or the rim. ### What does the L mean in front of a HiPP batch number? It marks the lot the pack came from, which is the unit a recall names. EU law requires an indication identifying that lot and says it must be preceded by the letter L unless the code is clearly distinguishable from everything else on the label, which is why HiPP batch codes read like L-099191 and why a code beginning with something else is still legal. ### Do all HiPP batch codes start with L? No. The 2026 recall of a HiPP baby food jar named batch B49311, with no L at all, which the directive permits. ### How do I check whether my batch has been recalled? Against the official list for your market rather than a seller's page: the FDA, Health Canada, the FSA, lebensmittelwarnung.de or the NVWA. Our recall page carries all five. ### Is a European date format going to confuse me? It can. A European pack writes the day before the month, so a date an American reader reads as the third of November may be the eleventh of March instead. The official alerts spell the month out in words, which settles it. ### Can I use formula after the best-before date? This site will not tell you to. On infant formula that date is the one the declared vitamin levels are held to, and a newborn is the wrong person on whom to test the margin. ### What if the powder looks or smells different but the date is fine? Check the pack for damage first, then the batch against the official list. Foam, a faint fishy smell and small clumps are normal in these recipes and say nothing about age; a tin that has been wet, punctured, dented at the seam or stored somewhere hot is a different matter, whatever its date says. ## Sources How this page was checked - Sources verified · 22 Sept 2026 - External links · opened and read 22 Sept 2026 - Product data · snapshot 2026-09-25 - Editorial review · 22 Sept 2026 - Next scheduled check · 22 Oct 2026 1. [HiPP Netherlands, label of HiPP 1 Bio Combiotik (NL2472-03)](https://www.hipp.nl/fileadmin/media/NL/products/product_pdfs/NL2472-03.pdf) · use an opened tin within 3 weeks; keep it closed, dry and at room temperature; the best-before date is printed on the pack · fetched 18 September 2026 2. [HiPP pack artwork for HiPP PRE Bio Combiotik 600 g, version 7 (May 2025)](https://cdn.sanity.io/files/2xwg8lcu/production/785bf747444428011b13d7fd31a6ed031a3a5ce3.pdf) · the German box: store dry and at room temperature, use within 3 weeks of opening, and a field marked MHD for the best-before date, which the artwork reserves rather than prints · fetched 18 September 2026 3. [HiPP pack artwork for HiPP PRE Bio Combiotik trinkfertig 200 ml (2227-05), version V1 05/26](https://cdn.sanity.io/files/2xwg8lcu/production/f5bd924aadf69bfa5feb653635d11fc2d4be59ca.pdf) · an opened, unwarmed bottle keeps closed in the fridge at no more than 6 °C and is used within 24 hours; unopened, store dry and at room temperature, best before the date shown on the pack · fetched 25 September 2026 4. [HiPP UK, product page for HiPP Organic Growing Up Milk Ready to Feed](https://www.hipp.co.uk/shop/formula-milks/growing-up-baby-milk-ready-to-feed) · unused milk left in the bottle can be resealed and stored in the fridge for up to 72 hours, where the younger bottles in the range allow 24 · fetched 21 September 2026 5. [Directive 2011/91/EU on indications or marks identifying the lot to which a foodstuff belongs](https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32011L0091) · Article 3: the lot is determined by the producer, manufacturer or packager, and the indication shall be preceded by the letter L except where it is clearly distinguishable from the other indications on the label · fetched 22 September 2026 6. [FSA, food alert FSA-AA-105-2019](https://data.food.gov.uk/food-alerts/id/FSA-AA-105-2019.json) · the batch codes as an official alert lists them: L-099191, L-162192 and L-186191, with their best-before dates · fetched 21 September 2026 7. [FSA, food alert FSA-AA-23-2026](https://data.food.gov.uk/food-alerts/id/FSA-AA-23-2026.json) · a HiPP batch code without the letter L: B49311, best before 31 January 2027 · fetched 21 September 2026 8. [FSA food alerts](https://alerts.food.gov.uk/) · the official list a British reader checks a batch against · fetched 18 September 2026 **Corrections (2)** - 25 September 2026 · The page had said all 35 powder packs keep three weeks once opened and that nine of the ten liquid packs keep 24 hours. The British Anti-Reflux Milk and the 90 ml starter bottles, recorded since, make it all 36 powders and ten of the eleven liquids; the British growing-up bottle is still the one exception. The counts now come from the product records. - 25 September 2026 · The page had called the British growing-up bottle the tenth of the liquid packs, beside a count saying ten of the eleven keep 24 hours once opened. It is the eleventh, the one exception, and the page now says so without counting.