Expiry dates on packaged food are not arbitrary numbers stamped on for convenience. They are the outcome of a structured, scientific process designed to answer one question: how long can a product remain safe and enjoyable before its quality begins to decline? For food manufacturers, getting that answer right protects consumers, satisfies regulators and safeguards brand reputation. This is where shelf life testing comes in.
What Shelf Life Testing Actually Measures
Shelf life testing evaluates a food product across three connected dimensions:
- Safety – whether harmful microorganisms or pathogens could develop to unacceptable levels before the product is consumed
- Quality – changes in taste, texture, color, aroma and nutritional value over time
- Sensory acceptability – whether the product still looks, smells and tastes the way consumers expect
A product can technically remain safe to eat while its quality has already dropped below what a brand wants associated with its name. That is why a proper study combines microbiological, chemical, physical and sensory analysis rather than relying on a single measurement.
The Regulatory Framework Behind Expiry Dates
Shelf life determination in the UAE and the wider GCC region follows two standards:
- GSO 150-1:2013 – sets out mandatory expiration date requirements
- GSO 150-2:2013 – addresses voluntary expiration dates
These standards define which categories of food products require date marking and the storage conditions under which shelf life must be validated. Working within this framework is not optional for manufacturers who want their products on UAE shelves, which is why accredited laboratory testing plays such a central role in product development.
How Labs Test Under Standard Storage Conditions
Laboratories store samples of a product under defined conditions and test them at set intervals throughout the study. The six standard storage conditions used in shelf life studies are:
- Frozen – minus 18 degrees Celsius
- Refrigerated – 4 degrees Celsius
- Ambient – 25 degrees Celsius at 60 percent relative humidity
- Intermediate – 30 degrees Celsius at 65 percent relative humidity
- Accelerated – 40 degrees Celsius at 75 percent relative humidity
- Tropical – 30 degrees Celsius at 75 percent relative humidity
Each condition reflects a real distribution or storage scenario a product may encounter, from a supermarket chiller to a warehouse in a hot, humid climate. Samples are tested at the start of the study and at multiple points afterwards, allowing scientists to track how the product changes over time and pinpoint the moment it no longer meets safety or quality thresholds.
Accelerated Shelf Life Testing
Waiting out a product’s full real-time shelf life before launch is not always practical, particularly for new product development or a tight launch schedule. Accelerated shelf life testing addresses this by exposing products to elevated temperature and humidity, commonly 40 degrees Celsius and 75 percent relative humidity, to speed up the natural degradation process under controlled conditions.
By deliberately stressing the product, laboratories can predict how it will behave over its intended shelf life in a fraction of the real time required, while still producing scientifically defensible results. This method is particularly useful for:
- Reformulated products
- New packaging trials
- Categories where manufacturers need a faster route to a defensible expiry date
What Happens During the Testing Process
A shelf life study typically includes:
- Microbiological analysis – detecting indicator organisms and pathogens
- Chemical testing – checking for undesirable substances and changes in nutritional composition
- Physical evaluation – identifying structural or textural changes
- Sensory assessment – carried out by trained evaluators
- Packaging assessment – since the barrier properties of packaging materials directly influence how quickly a product deteriorates
Factors That Influence Shelf Life
No two products behave identically. Shelf life is shaped by several interacting factors:
- Ingredients and their inherent stability
- Manufacturing process
- Packaging type and its ability to protect against oxygen, moisture and light
- Storage and distribution conditions the product will actually experience on its journey to the consumer
Why This Matters for Food Brands
Accurate shelf life data does more than satisfy a regulatory checkbox. It reduces spoilage and food waste, protects consumers from products that have degraded beyond safe or acceptable limits, and builds the kind of consumer trust that keeps a brand on the shelf. It also gives manufacturers the evidence they need to defend their date marking decisions during audits or retailer reviews.
Get Your Product Tested with URS Labs
URS Labs is an ISO/IEC 17025 accredited laboratory based in Dubai, accredited through the Emirates International Accreditation Centre (EIAC) and registered with the Emirates National Accreditation System (ENAS) in Abu Dhabi. URS Labs offers shelf life testing across all six standard conditions, along with nutritional analysis, for manufacturers who need a defensible expiry date backed by accredited results.
If you are launching a new product, reformulating an existing one or need to validate your current date marking, get in touch with URS Labs to discuss what your product needs.