COSHH Inventory Management Guide for Safer Sites

This COSHH inventory management guide shows facilities teams how to control hazardous substances, maintain evidence and stay ready for inspection.

A missing spray bottle, an out-of-date safety data sheet, or a chemical cabinet nobody owns can quickly become an audit finding. More seriously, it can leave people exposed to substances that have not been properly assessed or controlled. A dependable COSHH inventory management guide starts with a simple principle: if a hazardous substance is on site, you should know what it is, where it is, who uses it and what controls apply.

For multi-site teams, that visibility cannot live only in one manager's spreadsheet or in a folder that frontline staff cannot access. Inventory management is the operational record that connects your COSHH assessments to the substances, locations, people and evidence that matter day to day.

What a COSHH Inventory Must Achieve

Under the Control of Substances Hazardous to Health Regulations 2002, employers must prevent or adequately control exposure to hazardous substances. The inventory is not itself the risk assessment, and it does not replace safe systems of work, training, maintenance or health surveillance where required. It gives those controls a reliable foundation.

A useful inventory answers practical questions quickly. What cleaning chemicals are held in this building? Which products contain sensitising agents? Is the approved substitute actually being used? Where is the current safety data sheet? Which assessment covers the contractor's product?

It should cover more than products with obvious hazard symbols. Consider cleaning chemicals, paints, adhesives, fuels, oils, laboratory substances, pool chemicals, dusts, fumes, biological agents and substances generated by work activities, such as welding fume or wood dust. The scope depends on your operation, but the test is consistent: could the substance harm health through inhalation, skin contact, ingestion or another route of exposure?

Build the COSHH Inventory around the Work

The fastest way to create a weak register is to list chemicals from purchase orders without checking how they are used. A better approach is to work through each site and activity with the people who carry out or supervise the task.

Start with receiving areas, cleaning cupboards, workshops, plant rooms, kitchens, laboratories and maintenance stores. Then look beyond fixed storage. Substances may sit on cleaners' trolleys, in engineers' vans, in contractor compounds or in departmental cupboards. Temporary projects are especially easy to miss, because products arrive for a short job and remain after it finishes.

For every substance or hazardous product, record enough information to manage it consistently. This normally includes the product name, manufacturer, substance type, hazardous properties, intended use, quantity or stock range, storage location, user group, current safety data sheet, associated COSHH assessment and review date. Record the product code where products have similar names. A photograph of the container label can also help staff verify the item on site.

Do not treat the inventory as a catalogue of individual bottles. A product used in several locations may be one inventory item linked to multiple site records, quantities and assessments. Equally, the same chemical used for routine cleaning and specialist maintenance may need different controls because the task, frequency, ventilation and exposure route differ.

Learn MorePremises & Asset ManagementHow one substance sits against the rooms, stores and sites that hold it, so you can see what is on each location.

Confirm Safety Data Sheets and Assessments

Safety data sheets provide vital technical information, but they are not workplace risk assessments. They describe hazards and recommended precautions in general terms. Your COSHH assessment must consider how your organisation uses the substance in its own setting.

Check that each inventory item has a current, legible safety data sheet from the supplier. If the formulation or classification changes, review the linked COSHH assessment. The same applies when use changes: moving a product from occasional use in a ventilated workshop to daily use in a confined plant room materially changes the risk picture.

The assessment should identify who may be exposed, how exposure could occur, the controls required, emergency arrangements, PPE requirements, storage and disposal requirements, and any training or health surveillance implications. Linking this record directly to the inventory prevents a common failure: a valid assessment exists, but nobody can show which product or activity it applies to.

Learn MoreRisk Assessments & HazardsHow the hazardous-substance record stays linked to the assessment for that task, so you can show which product and activity the controls apply to.

Set Clear Ownership and Change Rules

An inventory becomes unreliable when everybody assumes somebody else is maintaining it. Give each site or operational area a named owner, with a clearly defined central reviewer. The local owner can confirm stock, labels, storage and day-to-day changes. The central compliance or health and safety lead can monitor overdue reviews, approve new product processes and identify patterns across the estate.

A simple change process is often more valuable than an annual stocktake. Before a team buys, accepts or uses a new hazardous product, require the safety data sheet, a review of whether a safer alternative is available, confirmation of storage arrangements and an approved COSHH assessment where needed. This is particularly important for contractors. Their materials may be excluded from your purchasing process, but they can still create exposure risks in your workplace.

Set rules for disposal too. Obsolete chemicals should not remain in the inventory indefinitely because someone is unsure whether they are still on site. Confirm removal, retain the disposal evidence where appropriate, and mark the item as archived rather than deleting the history. Audit trails matter when you need to demonstrate what was held at a location at a particular time.

Make Physical Checks Part of Routine Control

A digital register is only as good as the physical reality it reflects. Routine checks should verify that containers are labelled, stored correctly, within any relevant expiry or supplier guidance, and matched to the approved inventory. They should also identify damaged packaging, leaks, incompatible storage and unapproved decanted containers.

The frequency should reflect the risk. A high-turnover chemical store or a site handling corrosives may need frequent checks. A locked cupboard holding low volumes of a stable product may need less frequent review. What matters is that the schedule is deliberate, recorded and followed up when issues are found.

Where possible, place QR codes on cupboards, stores or assets so that authorised staff can retrieve the relevant inventory, safety data sheet and assessment at the point of use. This reduces the gap between policy and practice. An operative should not have to return to the office or search a shared drive to confirm basic controls.

Use the Inventory to Prove Control, Not Just Count Stock

The strongest COSHH inventory management guide is built for action during an inspection, incident or audit. It should help you identify affected sites, users and controls within minutes.

For example, if a supplier updates a cleaning product's classification, you should be able to find every site where it is held, the assessments linked to it, the teams trained to use it and any open corrective actions. If a spill occurs, you should be able to confirm the product, locate the emergency instructions, record the incident and evidence the follow-up. If an auditor asks whether all current products have valid documentation, the answer should come from live status reporting rather than a manual chase across departments.

Learn MorePeople & TrainingHow training history sits with the people who use a substance, so you can show who was instructed on the task and when.

This is where a connected compliance platform earns its place. CalmCompliance can bring site records, COSHH assessments, documents, inspections, actions and training evidence into one operational view. Rather than duplicating chemical lists across spreadsheets and folders, teams can assign ownership, trigger reviews and retain a defensible record of every change.

Common Gaps That Create Avoidable Exposure

Most COSHH inventory failures are not caused by a lack of policy. They are caused by broken handovers and disconnected records. Watch for these recurring gaps:

• Products added by local teams without a safety data sheet or assessment.
• Generic assessments that do not reflect the actual task, quantity or location.
• Contractor chemicals absent from site controls.
• Old products left in stores after projects end.
• Assessments reviewed on paper but not communicated to users.
• Training records separated from the substances and tasks they support.

Each gap weakens your ability to prove that controls are working. Treat them as operational issues, not paperwork issues. Assign an action, a due date and an owner, then verify completion at the site.

Keep the Record Live

A COSHH inventory should change when your sites change. Review it following a new product, process change, incident, supplier update, refurbishment, contractor mobilisation or concern raised by staff. Scheduled reviews still matter, but event-based updates prevent the register becoming a historical document.

The goal is not to create more administration. It is to make safe choices easier for the people doing the work and make evidence available when it is needed. When every hazardous substance has an owner, a location, a current assessment and visible controls, compliance becomes calmer because the proof is already in the process.