A purpose-built COSHH storage container includes features a standard shipping container simply does not have: bunded floor, ventilation, hazard signage, and controlled access.
A COSHH storage container is a purpose-built unit designed to store substances hazardous to health more safely than a standard store or general shipping container. These units are used to help businesses manage chemical risks through secure access, spill containment, ventilation, and proper labelling. That aligns with HSE guidance that hazardous substances should be stored in appropriate containers, clearly identified, and separated where substances are incompatible.
If you store chemicals, solvents, paints, or other hazardous materials on site and you are using a standard storage solution, it is worth understanding what a COSHH container actually provides that general storage does not.
To see how these features come together in practice, the range of Universal Containers COSHH chemical store containers gives a clear example of the size options, bunded floors, louvre vents, and secure access typically expected in this type of unit.
| What sets a COSHH container apart from general storage Bunded floor for secondary spill containmentVentilation panels to reduce fume build-upLockable doors with controlled or restricted accessHazard warning signage and clear chemical identificationWeather-resistant construction for outdoor site useInternal layout options to separate incompatible substances |
What does COSHH mean?
COSHH stands for Control of Substances Hazardous to Health. It is the UK regulatory framework that requires employers to identify hazardous substances used in the workplace, assess the risks they pose, and put adequate controls in place to protect workers and others.
The HSE COSHH framework covers a wide range of substances: chemicals, fumes, dusts, vapours, mists, gases, biological agents, and more. The regulations apply across virtually every industry, from construction and manufacturing to schools, farms, and offices.
COSHH is about risk control, not just storage
This is worth stating clearly because it is the part most easily missed when researching storage products. Buying the right container is one control measure. It is not the whole picture. COSHH compliance also involves identifying all hazardous substances in use, carrying out risk assessments, training staff on safe handling, and maintaining proper records.
Storage is where many sites fall short in practice, but treating COSHH as a buying checklist rather than an ongoing process misses the point. The container helps. It does not do the job alone.
What is a COSHH storage container used for?
These containers are used to store hazardous substances securely when they are not in use. Common contents include:
- Paints and thinners
- Solvents and cleaning agents
- Oils and lubricants
- Pesticides and treatment chemicals
- Industrial cleaning products
- Adhesives and resins
The range of substances is broad, which is why the specification of the container matters. Some products produce flammable vapours. Some react badly with others if stored together. Some require specific temperature ranges. The right COSHH store should be chosen based on what you are actually storing, not just because it carries the COSHH label.
Why can’t you use a standard shipping container?
A standard shipping container is built for secure transport. A COSHH container is built for safe chemical storage. The difference matters on site.
A standard shipping container is engineered for one job: moving goods securely across long distances. It does that very well. But it has no secondary spill containment, no built-in ventilation, no hazard identification, and no separation features for incompatible substances.
Put solvents or flammable liquids into an unventilated steel box and you have a fume build-up risk. Have a container leak without a bunded floor and the spill goes directly onto the ground. Neither is compliant storage for hazardous substances, and both are avoidable.
The modifications that turn a standard container into suitable chemical storage are not cosmetic. They change how the unit performs in practice, and they are why COSHH-specific containers exist as a distinct product category.
What features does a COSHH storage container usually have?
Bunded floor
The bunded floor is a raised inner base that creates a secondary containment area inside the unit. If a drum leaks, a container is knocked over, or a slow drip goes unnoticed, the bund catches the spill before it reaches the ground. This is one of the most consistently required features across supplier guidance and HSE best practice for liquid chemical storage.
The bund capacity matters too. It should be sufficient to hold the volume of the largest single container stored, at a minimum.
Ventilation
Louvre vents, high and low, allow passive airflow through the unit. This reduces the build-up of vapours from volatile substances and helps keep internal temperatures from spiking. For anything flammable or with a low vapour pressure, ventilation is not optional. Some higher-specification units use powered extraction where passive venting is not enough.
Lockable doors and restricted access
HSE guidance is clear that hazardous substances should be accessible only to those who need to work with them. A COSHH container should have robust locking and, where appropriate, restricted key access. This is both a safety and a security measure.
Hazard labelling and clear identification
Hazard warning signage on the exterior of the unit is a standard expectation. Internally, clear labelling of what is stored, where, and in what quantities is part of good practice. The container exterior should make its contents identifiable at a distance, including for emergency services.
Shelving and internal layout
Larger walk-in units typically include adjustable shelving to organise stock safely. Good internal layout keeps incompatible substances separated and ensures that heavier items are stored low. It also means staff do not have to move multiple containers to reach what they need, which reduces handling risk.
Weather resistance and site durability
Most COSHH containers are used outdoors on construction sites, depots, industrial yards, and agricultural settings. They need to handle UK weather without degrading the internal environment or compromising the structural integrity of the unit. Heavy-duty steel construction with appropriate surface treatment is standard.
Good internal organisation keeps incompatible substances separated and reduces handling risk for staff.
Who needs a COSHH storage container?
Any business or site that stores hazardous substances regularly and in meaningful quantities should have appropriate storage in place. The most common users include:
- Construction sites: Construction sites
- where paints, solvents, adhesives, and cleaning products are all in regular use
- Construction sites: paints, solvents, adhesives, and cleaning chemicals are standard on most jobs
- Maintenance teams: oils, lubricants, and treatment products need secure, contained storage
- Factories and workshops: chemical use tends to be higher-volume and more varied
- Facilities management: cleaning agents, treatment chemicals, and specialist products across large estates
- Schools and public-sector sites: smaller volumes, but compliance expectations still apply
- Agricultural and horticultural settings: pesticides, fertilisers, and fuel treatments
How do you choose the right COSHH storage container?
Start with what you are storing
The substances determine the specification. Flammable liquids need higher-grade ventilation. Corrosives need compatible shelving and containment. Incompatible substances need to be physically separated, either in different sections or different units entirely.
Run through the safety data sheets for everything you plan to store. The storage requirements are listed there.
Match the size to the volume
Compact COSHH stores suit sites with smaller chemical inventories or limited yard space. A 9ft or 10ft unit handles most small-to-medium storage requirements comfortably. A 20ft unit is more appropriate for larger volumes, a wider range of substances, or sites where multiple teams need regular access.
A common mistake is buying the smallest unit that fits the current stock level, then running out of usable space within a few months. Leave room for safe working inside the container, not just storage.
Think about access, security, and location
Where the container sits matters. It should be accessible for regular stock management without being in a position where a spill or fire could affect nearby buildings or drainage. Security requirements vary by site, but a COSHH store is a target for theft and should be sited and locked accordingly.
Get specialist advice for higher-risk storage
Where you are storing larger quantities, highly flammable substances, or a complex mix of materials, a standard COSHH container may not be enough. Some substances require explosion-proof fittings, powered extraction, or separate fire-rated storage. Do not assume all COSHH stores are interchangeable for all chemicals.
COSHH storage container vs COSHH cabinet: what’s the difference?
The terminology gets mixed up regularly, including across supplier pages and product listings. In practice, the distinction is mainly one of size and application:
- COSHH cabinet or cupboard: smaller, usually floor-standing or wall-mounted, designed for indoor use or close-at-hand workplace storage. Typically holds a limited number of bottles or smaller containers.
- COSHH storage container or store: larger, freestanding, usually placed outdoors or in a designated storage area. Suited to bulk storage, a wider range of substances, or sites where volume or outdoor use rules out a cabinet.
Both types share the same core features (bunding, ventilation, lockable access, hazard identification), but scale and placement are different. A workshop might use a cabinet for day-to-day access and a larger store for bulk stock. The right combination depends on the site and what is being stored.
Does a COSHH storage container make you automatically compliant?
No. This is worth being direct about.
A COSHH storage container is a practical control measure. It helps manage the risks associated with hazardous storage. But compliance under COSHH requires more than the right equipment: it also involves identifying all hazardous substances, conducting risk assessments, ensuring staff are trained, maintaining safe systems of work, and reviewing controls regularly.
Buying a suitable container without the supporting processes in place is better than inadequate storage, but it is not a complete answer. The HSE COSHH framework centres on prevention and ongoing control, not one-off purchases.
| COSHH compliance goes beyond the container Carry out a COSHH risk assessment for every hazardous substance in useEnsure substances are correctly labelled both individually and in storageSeparate incompatible substances within or between storage unitsTrain staff on safe handling and emergency proceduresReview storage arrangements when substances or volumes change |
In summary
A COSHH storage container is a purpose-built unit that provides the features hazardous substance storage requires: spill containment, ventilation, secure access, and clear identification. It is not the same as a standard shipping container, and it is not interchangeable with a small cabinet.
The right unit depends on what you store, how much of it, and where. For most sites, a purpose-built COSHH container is the practical choice for outdoor or bulk chemical storage. For close-at-hand indoor use, a cabinet usually makes more sense.
If you store hazardous substances regularly, using a purpose-built COSHH storage container is a more defensible and practical approach than adapting general storage. Just make sure the surrounding processes, labelling, training, and assessments, are in place alongside it.
FAQs
What does COSHH stand for?
Control of Substances Hazardous to Health. It is the UK regulatory framework requiring employers to manage and reduce worker exposure to hazardous substances.
What is the difference between a COSHH cabinet and a COSHH storage container?
A cabinet is smaller, usually for indoor or close-at-hand use. A container or store is larger, often freestanding outdoors, and better suited to bulk or site-based storage. Both share core safety features but differ in scale and application.
Can you store chemicals in a normal shipping container?
Not adequately. A standard shipping container has no bunding, no ventilation, and no hazard identification. Using one for hazardous substance storage is not appropriate and is unlikely to satisfy COSHH requirements. A purpose-built COSHH store is needed.
What features should a COSHH storage container have?
At minimum: a bunded floor, ventilation, lockable doors, and hazard signage. Larger or higher-risk units may also need shelving for segregation, powered extraction, and fire-rated construction depending on what is stored.
Do all chemicals need to be kept in a COSHH container?
Not necessarily in a large container, but all hazardous substances need appropriate storage. For small volumes, a COSHH cabinet may be sufficient. For bulk storage or outdoor settings, a container is usually the more practical option. The substance, volume, and site all affect the right answer.
Are COSHH storage containers suitable for outdoor use?
Yes. Most COSHH containers are designed specifically for outdoor site use and are built to handle UK weather conditions without compromising internal storage conditions. Check that the unit you choose is specified for outdoor placement if that is where it will be used.
Does buying a COSHH container guarantee compliance?
No. A COSHH container is one control measure within a wider compliance framework. You also need risk assessments, correct labelling, staff training, segregation of incompatible substances, and regular review. The container supports safe storage; the surrounding processes deliver compliance.
