1. How SERPRO classifies spill kits

SERPRO classifies spill kits by their intended use, likely spill type, approximate absorbent capacity, format and the practical environment in which they may be used. A spill kit should be selected for the risk it is expected to manage, not simply by choosing the largest or cheapest available kit.

Where possible, SERPRO advice favours a practical response method: contain the spill, protect drains or sensitive areas, absorb or recover the liquid, dispose of contaminated materials correctly, and review the incident afterwards.

2. How oil-only, chemical and general-purpose absorbents differ

Absorbents are not all the same. A product that is suitable for a routine workshop spill may not be suitable for an aggressive chemical, and a product designed to float on water may not be the right choice for a water-based liquid.

3. Why capacities, sizes and sorbencies are approximate

SERPRO uses approximate capacities, sizes and sorbencies because spill control products are affected by real-world variables. Absorbent performance is not the same as filling a fixed measuring container. It depends on the product, the liquid and the way the product is used.

Factors that can affect sorbency

• The liquid type, including whether it is oil-based, water-based, solvent-based, viscous, aggressive or mixed with contamination.
• The liquid temperature and viscosity, which can affect how quickly it is absorbed or retained.
• The absorbent format, such as pads, rolls, socks, booms, cushions, granules or loose absorbent.
• Whether the product is used for containment, absorption, wiping, recovery support or final clean-up.
• How much of the product is actually exposed to the liquid during the incident.
• Whether the product is squeezed, walked on, over-saturated, lifted early or used on an uneven surface.
• Manufacturing tolerances, packaging compression and reasonable variation in product dimensions.

For this reason, approximate values are more transparent than false precision. When SERPRO gives a capacity figure, it should be treated as a practical selection guide rather than a guaranteed performance figure in every possible spill condition.

4. Why SDS and site risk assessment matter

Product advice cannot replace a site-specific risk assessment. A safety data sheet, often referred to as an SDS, provides important information about a chemical product, including hazards, handling, storage and emergency measures. The Health and Safety Executive explains that safety data sheets help users of chemicals make a risk assessment and understand the hazards and emergency measures associated with those chemicals.

For hazardous substances, the site should consider COSHH requirements, the SDS, product labels, storage arrangements, likely exposure routes, spill pathways, drainage, staff training, PPE and disposal responsibilities. HSE guidance explains that COSHH risk assessment involves identifying hazardous substances, assessing risks and putting suitable control measures in place.

Pollution prevention also matters. GOV.UK guidance advises businesses to create a pollution incident response plan to minimise pollution if there is a leak, spill or fire. NetRegs good practice guidance also recommends that sites keep spill kits or other pollution control equipment available and accessible where spills and leaks may occur.

What SERPRO expects customers to check

• The identity of the liquid or likely liquids that may be spilled.
• The safety data sheet and any handling, storage, PPE or emergency response requirements.
• The largest credible spill volume, not just the most common spill volume.
• Whether drains, soil, surface water, process areas or public areas could be affected.
• Whether staff are trained and authorised to respond to the type of spill involved.
• Whether contaminated absorbents can be safely stored and disposed of after use.

5. How SERPRO product recommendations are made

SERPRO recommendations are based on practical product suitability rather than a single keyword match. When giving product advice, we may consider the spill type, approximate volume, available space, container size, workplace setting, compatibility concerns, response sequence and whether additional products are needed.

1. Identify the liquid or likely liquid group.
   The first distinction is normally whether the spill involves oils and fuels, general non-aggressive liquids, chemicals, unknown liquids or mixed workplace fluids.
2. Estimate the credible spill volume.
   We consider the volume that may reasonably need to be contained or absorbed, while recognising that absorbent capacity values are approximate.
3. Consider the spill pathway.
   A spill near a drain, doorway, yard, vehicle route or watercourse may need containment or drain protection before absorption.
4. Select the response format.
   A small bag kit, vehicle kit, wheeled bin, static station, drip tray, bund or drain cover may be appropriate depending on where the product will be used.
5. Check practical access.
   A suitable product must be close enough, visible enough and simple enough for staff to deploy quickly.
6. Build in a sensible margin.
   We avoid treating approximate sorbency values as exact guarantees. Where risk is higher, a larger kit or supporting products may be more appropriate.

6. What SERPRO can advise on

SERPRO can usually give practical product guidance on the selection and use of spill control products, including:

• Choosing between oil-only, general-purpose and chemical absorbents.
• Comparing approximate spill kit capacities and formats.
• Selecting pads, socks, booms, cushions, rolls, granules and drain protection products.
• Choosing drip trays, bunds and containment products based on dimensions and intended use.
• Suggesting when additional items such as drain covers, disposal bags or PPE may need to be considered.
• Explaining why a larger capacity, different absorbent type or different product format may be more practical.
• Helping customers understand product descriptions, approximate sizes and intended applications.

7. What SERPRO cannot advise on

SERPRO product advice has limits. We cannot take over the duties of the site operator, employer, safety adviser, environmental consultant, waste contractor or emergency responder.

SERPRO cannot normally provide:

• A site-specific legal compliance sign-off.
• A replacement for a COSHH assessment, environmental risk assessment or pollution incident response plan.
• A guarantee that a product is suitable for every concentration, temperature or mixture of a chemical.
• A guarantee that a spill kit will absorb a precise volume in all real-world conditions.
• Formal hazardous waste classification or disposal instructions for contaminated absorbents.
• Emergency response command advice during a live incident.
• Medical, toxicological or occupational health advice.
• Advice that overrides the safety data sheet, site procedures, emergency services, regulators or qualified safety professionals.

8. How SERPRO pages and product information are reviewed

SERPRO product and information pages are reviewed to improve clarity, usefulness and practical accuracy. Review work may include checking product ranges, improving descriptions, updating internal links, clarifying approximate capacities, adding advice pages, correcting outdated wording and improving how product recommendations are explained.

We also review pages when:

• Product specifications or supplier information change.
• Customers ask repeated questions about the same product or issue.
• New product groups, materials or absorbent formats are added.
• Guidance wording can be made clearer or more useful.
• A page needs better links to related spill kits, absorbents, drip trays or guidance.
• Search behaviour shows that customers are looking for a more specific answer.

This does not mean every page changes every time guidance is reviewed. It means SERPRO treats product advice as a maintained information asset, not a static catalogue entry.

9. How customers can request clarification

Customers are encouraged to ask for clarification before purchasing if they are unsure which product is suitable. This is particularly important where the spill involves chemicals, unusual liquids, high volumes, outdoor storage, drainage risk, confined areas, public access or site-specific restrictions.

When asking for advice, it helps if you can provide:

• The liquid or liquids involved.
• The approximate maximum spill volume.
• Whether the liquid is oil-based, water-based, chemical, unknown or mixed.
• The container size and storage arrangement.
• Whether the spill risk is indoors, outdoors, in a vehicle, near a drain or near a watercourse.
• Any available safety data sheet or product label information.
• Whether staff have any existing site procedure or product preference.

SERPRO can then give a more useful product suggestion and explain the assumptions behind it.

10. External guidance references

The following external resources may help customers understand the wider context for spill control, chemical safety and pollution prevention:

• HSE: Chemical safety data sheets
• HSE: How to carry out a COSHH risk assessment
• GOV.UK: Pollution prevention for businesses
• NetRegs: Good practice to prevent pollution

SERPRO provides product guidance to help customers make informed purchasing decisions. The customer remains responsible for checking suitability against their own site risks, liquids, safety data sheets, procedures, training requirements and legal duties.