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Spill kits: types, sizes, what the law requires and how to use one

What goes in a spill kit, which colour suits which liquid, how big to buy and where the law asks for one.

An open spill kit bin with absorbent pads and a boom beside an oil patch near a forklift
The kit belongs where a spill is most likely.

A spill kit is a container of absorbent, protective equipment and disposal bags kept where a liquid spill could happen. Kits come as oil-only (white), chemical (yellow) and general-purpose (grey), a colour code set by trade convention. Few laws name the kit itself. Most ask for spill response measures that suit what you store, and a kit is the usual way to meet them.

Quick answer: What should be in a spill kit?

Absorbent pads, socks, pillows or granules, a drain seal, leak sealing putty, gloves, goggles and a coverall matched to the liquid, and disposal bags. Choose the kit by the liquid: white for oil only, yellow for chemicals and grey for general maintenance, a trade colour convention. Section 6 of the safety data sheet gives the clean-up method.

What is a spill kit used for?

A spill kit soaks up and holds back a liquid spill before it reaches a drain, a watercourse or a person. GPP 22, the spill guide published by Natural Resources Wales, SEPA and the Northern Ireland Environment Agency, describes a kit as pollution control equipment held in one place and chosen for the materials on the site.

The kit is the third layer of defence. The container holds the liquid and the bund or spill pallet catches what leaks from it. The kit deals with what escapes both: a drum knocked over on the way to the store, a hose that slips during decanting, a forklift puncture in the yard. A kit does not replace secondary containment. Size the containment first (secondary containment requirements, spill containment for fuel and chemicals), then add the kit.

Where the spill kit sits in a spill responseSpill response works in layers: the container, a bund or spill pallet under it, a spill kit for what escapes, a drain seal to protect the drains, and a salvage drum and bin for failed containers and used absorbent. The kit is the third layer and does not replace the bund. Container
Sound can, drum or IBC with its closure fitted
Bund or spill pallet
Sump holds a leak, sized by the rule that applies
Spill kit
Absorbs what gets past the bund or spills in transit
Drain seal
Stops liquid reaching a surface-water drain
Salvage drum, bin
Overpacks a failed drum; holds used absorbent
The kit deals with what the first two layers do not catch, so size the bund first.

Oil, chemical and general spill kits: what colour for which liquid?

White is the usual colour for an oil spill kit, yellow for chemicals and grey for general maintenance. The code is a trade convention. UK makers cite BS 7959-3:2007, the British Standard on colour coding of sorbents, which BSI lists as withdrawn on 5 March 2024. Some makers use another scheme, such as yellow for general purpose and pink for hazardous liquids, so read the label.

KitColourTakes upDo not use on
Oil onlyWhiteOil, diesel, petrol and other hydrocarbons; repels waterWater-based liquids, acids, alkalis
General purpose or maintenanceGreyWater-based liquids, coolant, cutting fluid, oil, fuel, mild solventsAggressive acids and alkalis
Chemical (hazmat)YellowAcids, alkalis, aggressive chemicals, solventsAny liquid whose data sheet names another method

Choose by the liquid. Section 6 of the safety data sheet gives the clean-up method and names techniques to avoid (REACH Annex II, 6.3). Canada’s National Fire Code asks for an absorbent compatible and non-reactive with the liquid (Article 4.1.6.3). An acid or alkali needs the chemical kit and, where the data sheet says so, a neutraliser. An unknown liquid gets the chemical kit: OSHA treats an unlabelled drum as hazardous until it is identified (1910.120(j)(1)(iv)). Chemical compatibility covers the container side.

What should a spill kit contain?

A kit holds absorbent in the forms the spill needs, a way to seal a leak and cover a drain, protective equipment and bags for the waste. GPP 26, the guide to storing drums and IBCs, lists five items: leak sealing putty, over drums, drain seals, oil or chemical sorbents and PPE.

ItemWhat it does
Pads and rollsCover and mop up a flat spill
Socks (booms)Ring a spill to stop it spreading; guard a drain
PillowsSoak up a persistent leak or a contained pool
Loose granulesReach cracks and rough ground
Drain seal or matCovers a gully or manhole
Leak sealing puttyPlugs a hole in a drum until it can be moved
Gloves, goggles, coverallPPE matched to the liquid
Disposal bags and tiesHold used absorbent for collection

Add what your liquids call for. EPA Victoria’s Publication 1698 also lists recovery drums, neutralisers for acids and bases, booms and portable pumps. For flammable liquids, HSE guidance HSG51 (paragraph 114) advises considering non-combustible absorbent granules for small spills, and the REACH data sheet rules mention non-sparking tools (Annex II, 6.3.2).

How big should a spill kit be, and where should it go?

No regulator sets a spill kit size. Kits are sold by absorbent capacity in litres, from a few tens of litres in a grab bag to several hundred in a wheeled bin. The usual rule of thumb matches that capacity to the largest container that could spill outside a bund. It has no legal force.

Find the largest container in the area. If a spill pallet or bund holds all of it, the kit covers drips and decanting. If it can spill onto open floor or a yard, rate the kit at its full volume. Use a bag kit for a 20 L jerry can and a bin or drum kit of 205 L or more for a 205 L drum. A 1,000 L IBC belongs in a bund (IBC bund size), with the kit kept for what escapes. The spill pallet sizing calculator and spill pallet size by drum count set the bund.

Put a kit at each storage area, at the loading and decanting point and in the vehicle bay. Keep another away from the store in case a fire or large spill blocks the first (GPP 22 glossary; GPP 26, 8.2). Schedule 1 of the Safety Signs and Signals Regulations 1996 has eyewash and safety shower signs but no spill kit sign, so the sign is your choice.

Which kit suits which liquid (trade convention)An oil-only kit suits fuel and oil, including oil on water, but not water-based liquids or acids. A general kit adds coolant and mild solvents. Only a chemical kit suits acids and alkalis, and an unknown liquid is treated as a chemical spill. Oil only General Chemical Diesel and petrol Diesel and petrol: suitable for Oil only✓ Diesel and petrol: suitable for General✓ Diesel and petrol: suitable for Chemical✓ Oil on water Oil on water: suitable for Oil only✓ Oil on water: conditional for General~ Oil on water: conditional for Chemical~ Water-based coolant Water-based coolant: not suitable for Oil only✕ Water-based coolant: suitable for General✓ Water-based coolant: suitable for Chemical✓ Mild solvents Mild solvents: conditional for Oil only~ Mild solvents: suitable for General✓ Mild solvents: suitable for Chemical✓ Acids and alkalis Acids and alkalis: not suitable for Oil only✕ Acids and alkalis: not suitable for General✕ Acids and alkalis: suitable for Chemical✓ Unknown liquid Unknown liquid: not suitable for Oil only✕ Unknown liquid: not suitable for General✕ Unknown liquid: conditional for Chemical~
~ means it works with limits: the pad also takes up water, or the safety data sheet decides. Check the maker's data sheet.

Are spill kits a legal requirement in the UK?

Not by name. The Control of Pollution (Oil Storage) (England) Regulations 2001 require secondary containment for oil in containers over 200 litres kept outside a building (regulation 3(2)) and say nothing about spill kits. Environment Agency guidance on GOV.UK, “Pollution prevention for businesses”, tells businesses to have a spill kit suited to the products on site, near storage, loading areas and transfer routes. That is advice. The same page warns that polluting can bring an unlimited fine, up to five years in prison, or both.

The duties that are law sit around the kit. COSHH regulation 13 requires an employer to prepare procedures for accidents with hazardous substances, to take immediate steps to mitigate one and to give PPE to those permitted in the affected area. The exception, in regulation 13(4), is where the quantities present only a slight risk and the existing controls suffice. Regulation 12 requires suitable information, instruction and training. HSE guidance HSG51 (paragraph 114) asks you to consider absorbent granules for small flammable spills. See COSHH storage requirements and UK oil storage regulations.

Wales, Scotland and Northern Ireland have GPP 22 on spills and GPP 26 on drums and IBCs, which set out what a kit should hold and where it should sit. Both are guidance, and GPP 22 states that the Environment Agency does not endorse it for England.

Spill kit requirements in the US: OSHA, EPA and DOT

No federal rule uses the words “spill kit”. The phrase returns no results in an eCFR search (checked 19 October 2026), so neither OSHA, EPA nor DOT requires a kit by name.

EPA. The SPCC rule, 40 CFR part 112, covers oil facilities that could reach navigable waters and hold over 1,320 US gallons aboveground, counting containers of 55 US gallons or more (112.1(d)(2)(ii)). Section 112.7(c) allows active or passive containment and lists sorbent materials among the onshore options. Sorbent does not replace a dike for bulk storage: 112.8(c)(2) and (c)(11) ask for secondary containment of the largest container (secondary containment requirements).

OSHA. HAZWOPER, 29 CFR 1910.120, requires DOT-specified salvage drums and suitable quantities of proper absorbent where spills, leaks or ruptures may occur in hazardous waste clean-up operations (paragraph (j)(1)(vii)). Paragraph (q) sets emergency responder training: awareness level for people who discover a release, at least eight hours at operations level, and annual refreshers. An incidental release that employees in the immediate area can absorb, neutralise or control is outside the standard. Hazard Communication training must still cover emergency procedures and PPE (1910.1200(h)(3)(iii)).

DOT. 49 CFR does not use the term either. Its salvage rule, 49 CFR 173.3(c), covers moving a damaged package in a UN-tested drum marked SALVAGE.

Container size against the 200 L oil bund lineIn England, oil in a container over 200 litres kept outside a building must stand in secondary containment. A 20 litre can is outside the regulations; a 205 litre drum and a 1,000 litre IBC are inside them, so their kit covers only what escapes the bund. CONTAINER SIZE AGAINST THE 200 L OIL BUND LINE 200 L 20 L jerry can Outside the oil storage rules 20 205 L drum Bund or drip tray required 205 1,000 L IBC Bund of 110% of the IBC 1000 Litres, log scale
England, 2001 regulations, regulation 2(2)(c): containers of 200 litres or less are excluded.

Spill kit requirements in Canada, Australia and New Zealand

Canada. The National Fire Code of Canada 2020, Division B, requires absorbent material to be available in a flammable or combustible liquid storage area (Article 4.2.7.11) and absorbent and neutralising material in a laboratory (Article 5.5.3.3). Provinces adopt their own editions (Alberta’s 2023 Alberta Edition took effect on 1 May 2024). Ontario’s O. Reg. 224/07 requires the spill plans of prescribed industrial plants to keep response equipment available, inspected and ready, and staff trained to use it. British Columbia’s B.C. Reg. 185/2017 requires pipeline operators and bulk rail and highway carriers to keep inspection records for their response equipment.

Australia. Section 357 of Queensland’s Work Health and Safety Regulation 2011 requires a business, so far as is reasonably practicable, to provide a spill containment system that holds a spilled hazardous chemical and allows for its clean-up and disposal. Western Australia’s regulation 357 is the same. Neither names a kit. EPA Victoria’s Publication 1698 lists spill kits with absorbent suited to the substance among response equipment and asks whether kits are inspected and well stocked.

New Zealand. The nearest thing to a spill kit duty is regulation 13.45 of the Health and Safety at Work (Hazardous Substances) Regulations 2017. A workplace holding toxic (6.1A to 6.1C) or corrosive (8.2A, 8.2B) substances must have to hand equipment and materials for leaks and spills, major or minor, with clean-up equipment, or neutralising chemicals and absorbent materials. Regulations 5.6 to 5.9 add an emergency response plan above the Schedule 5 quantities, with the equipment it names on hand.

Spill kits on ships and road vehicles: SOPEP, MARPOL, USCG and ADR

MARPOL Annex I regulation 37 requires an approved Shipboard Oil Pollution Emergency Plan (SOPEP) on oil tankers of 150 gross tonnage and above and other ships of 400 gross tonnage and above (IMO). The US Coast Guard version, 33 CFR 151.26, sets six mandatory sections and treats response equipment as optional content for a seventh, so a ship’s kit follows its approved plan. The Coast Guard also requires ships of 100 gross tons or more to have containment at fuel tank vents, overflows and fill pipes. That means a fixed container of half a barrel or one barrel on larger ships, or a portable container of at least 5 US gallons on smaller or older ones (33 CFR 155.320).

ADR’s equipment list requires a vehicle carrying goods with danger labels 3, 4.1, 4.3, 8 or 9 to carry a shovel, a drain seal and a collecting container. DfT guidance says commercial spill kits often include such items. GPP 22 advises every goods vehicle to carry a kit and PPE. The full list applies over the 1,000-point threshold; the ADR 1,000 points rule covers smaller loads.

How to use a spill kit: stop, contain, absorb, dispose

Assess the spill before you act, because health and safety come first (GPP 22, 2.2 and 4.1). Read the safety data sheet, and treat an unknown liquid as hazardous. Call the emergency services if it is flammable or toxic or may escape to the environment (EPA Victoria, page 44). Put on the PPE from the kit, then work in order.

  1. Stop the source. Close the valve, turn a leaking drum so the hole faces up, plug it with putty, or stand it in an over drum (GPP 22, 4.1.1).
  2. Contain the spread. Ring the spill with socks and cover nearby drains with seals (GPP 22, 4.1.2 and 4.1.3).
  3. Absorb. Lay pads or granules over the liquid. On a large spill, recover it with a pump or scoop first, because absorbent makes waste (GPP 22, 4.1.2 and 7). Never wash a spill into a drain or use detergent or dispersant unless your pollution plan, agreed with the regulator, allows it (GPP 26, 8.2).
  4. Dispose and refill. Bag the used absorbent, label it, record the spill and replace what you used. In the UK, report a spill that has entered or could enter a watercourse or soak into the ground to the pollution hotline, 0800 80 70 60 (GOV.UK; GPP 22).
Spill response in four stepsStop the source first, contain the spread, absorb what is left, then bag the used absorbent as waste and refill the kit. On a large spill, recover the liquid with a pump or scoop before using absorbent. Stop
Upright the container, close the valve, plug the leak
Contain
Ring the spill with socks and cover drains with seals
Absorb
Lay pads or granules; pump or scoop large pools first
Dispose
Bag the used absorbent as waste and refill the kit
The order follows the pollution control hierarchy in GPP 22: stop at the source first.

What happens to used spill kit absorbent?

It becomes waste, and GPP 22 says absorbent soaked in oil or chemicals is classed as hazardous waste (special waste in Scotland). The list-of-waste code is 15 02 02* for absorbents contaminated by hazardous substances and 15 02 03 for absorbents that are not (GOV.UK). Keep hazardous waste apart from other waste, because mixing them makes the whole load hazardous, and pass it to a registered carrier with a consignment note (GPP 22, 7.1). In the US the generator must decide whether the waste is hazardous (40 CFR 262.11).

Store used pads in a lidded container until collection (COSHH storage requirements). Wet absorbent is heavy, so check a bin’s maximum load against the weight of saturated pads.

Where Fortitude21 fits

We do not make spill kits, pads, socks or granules. Buy those from an absorbent specialist and give them the liquids and the largest container. We make the equipment around the kit: polyethylene salvage drums from 75 to 360 litres that overpack a failed container, kit storage in cabinets, a mobile cart or a 65 litre box, and yellow HDPE wheeled bins of 120, 240 and 660 litres for used absorbent. We also make drum spill pallets with sumps from 42 to 488 litres, bench and drip trays with sumps from 4 to 150 litres, and portable eyewash units of 30 and 53 litres.

Ask us what approval a salvage drum carries before you move dangerous goods in it, and send the liquid and concentration so we can confirm the chemical resistance of a pallet or tray.

Your use caseRecommended canWhy this one
A failed drum or pail Salvage Drums & Spill Response StorageSalvage Drums & Spill Response Storage Salvage drums of 75 to 360 litres overpack a leaking container, and cabinets, a cart and a box keep the kit at the store.
Used absorbent Wheeled BinsWheeled Bins Lidded yellow bins of 120 to 660 litres hold saturated pads until collection.
Drums in storage Drum Spill PalletsDrum Spill Pallets Sumps from 42 to 488 litres catch a burst drum, so the kit has less to do.
Pails and bottles at the bench Bench Trays & Drip TraysBench Trays & Drip Trays Sumps from 4 to 150 litres catch drips at the point of use.
A splash to the eyes Emergency Eyewash & Safety ShowersEmergency Eyewash & Safety Showers Portable 30 and 53 litre units flush the eyes where no plumbed water reaches.

Common questions

How many spill kits do I need?

Enough that someone can reach one before a spill reaches a drain. No rule sets a number. GPP 22 and GPP 26 ask for a kit next to storage containers and delivery areas, and a second one away from them in case the first cannot be reached. Add a kit for each vehicle that carries liquids and one at every decanting point, then walk the route from the furthest container and time it.

Do spill kits expire?

None of the rules reviewed for this page gives a spill kit an expiry date. Check the maker’s data sheet: gloves, goggles and bags can carry their own shelf lives, and a damp or damaged pack loses capacity. Replace anything past its date and restock after every use, as GPP 26 asks.

How often should a spill kit be inspected?

Often enough that it is always complete, with the interval written in your emergency plan. None of the UK or US rules reviewed fixes one. EPA Victoria asks sites to inspect kits so they stay available and well stocked, and Ontario’s O. Reg. 224/07 asks prescribed plants to keep response equipment inspected and ready. GPP 26 asks for weekly checks of containers and containment, and for kits to be replenished after use.

What does spill kit training cover?

It covers when to act, how to stay safe, how to use each item and when to stop and call for help. GPP 26 asks for training in when and how to use a kit and the PPE for the stored materials, with records and refresher courses. In the US, Hazard Communication training must cover emergency procedures and PPE, and HAZWOPER sets awareness and operations levels for emergency responders, with at least eight hours at operations level and annual refreshers.

Is a spill kit PPE?

No. A spill kit is response equipment, and a complete kit contains PPE such as gloves, goggles and coveralls. Regulation 4 of the PPE at Work Regulations 1992 requires an employer in Great Britain to provide suitable PPE where a risk is not controlled by other means, and 29 CFR 1910.132 does the same in the US. Check that the gloves in the kit resist your liquid.

Do spill kits need to be sealed or labelled?

None of the rules reviewed for this page requires either. A label that names the kit type and contents helps the responder, and a tamper-evident seal shows whether the kit has been opened. GPP 22 asks for equipment that is easy to reach but protected from damage and unauthorised use. Schedule 1 of the Safety Signs and Signals Regulations 1996 has no spill kit sign, so pick a clear one and keep it visible.

What is the difference between a spill kit and a spill pallet?

A spill pallet holds a leak under stored containers, and a spill kit soaks up a spill after it escapes. The pallet is passive containment sized by rule, such as 110% of the largest container or 25% of the total for oil in England. The kit is active response. Most sites need both, and the kit should cover what the pallet does not catch. See choosing a spill pallet.

Which spill kit do I need for diesel or petrol?

An oil-only (white) or general-purpose (grey) kit suits both, and the liquid’s safety data sheet confirms it. Petrol (UN 1203) is a volatile Class 3 flammable liquid, so use non-combustible absorbent and non-sparking tools, keep ignition sources away and ventilate. Diesel (UN 1202) is less volatile. DSEAR can apply to both: see DSEAR and ATEX.

When should you use a spill kit, and when should you call for help?

Use a kit on a spill you can identify and control from a safe position, such as a leak from one container on a floor. Call the emergency services if the spill involves a hazardous substance, such as a flammable or toxic liquid, or may escape to the environment. HAZWOPER draws the same line: an incidental release that employees in the immediate area can absorb, neutralise or control is outside emergency response.

What is a spill kit in a laboratory or hospital?

It is a kit matched to what that room handles. A chemical laboratory kit holds absorbent and neutralising material for its acids, bases and solvents, and Canada’s National Fire Code requires both in a laboratory (Article 5.5.3.3). Biological, cytotoxic and radioactive spills need kits and procedures set by the site’s safety officer, and a chemical kit does not stand in for them.

Can I use cat litter instead of a spill kit?

Cat litter soaks up oil, but it has no stated capacity and is not made for fuel or chemical spills. A purpose-made absorbent carries a rated capacity and a data sheet. Whatever you use, scrape up every granule, as GPP 26 asks, and dispose of the used material as the waste that the liquid makes it.

What does a spill kit look like?

A spill kit is a bag, bin or wheeled bin, usually white for oil, yellow for chemicals or grey for general use, packed with absorbent pads, socks, pillows or granules, a drain seal, gloves and goggles, and bags for used absorbent. A grab bag suits a 20 litre jerry can, and a bin or drum kit of 205 litres or more suits a 205 litre drum. The colour code is a trade convention, so read the label.

Why is dispersant not included in a spill kit?

Dispersants belong to residue clean-up, which comes after the containing and absorbing that a kit does. GPP 22, section 7.4.1, says products such as dispersants are often pollutants on their own and can cause a worse problem if used wrongly, and some go directly into the water environment. It tells you to ask the environmental regulator which product suits your spill and to keep the effluent out of drains.

Is a spill kit an engineering control?

Not in the NIOSH sense. NIOSH defines engineering controls as measures that reduce or prevent hazards from coming into contact with workers, and lists protective barriers as an example. A bund or spill pallet is a barrier of that kind: it holds a leak without anyone acting. A spill kit works after the liquid has escaped and needs a person to use it, and the gloves and goggles inside it are PPE.

Is a spill kit a best management practice?

Yes, in US stormwater practice, where EPA lists spill kits within its spill prevention and control best management practice. Its fact sheet says a kit should hold absorbent pads, sorbent booms or socks, granular absorbent, protective clothing, heavy plastic bags and drain covers, and sit labelled and easy to reach. 40 CFR 122.2 defines a BMP to include practices that control spillage or leaks. No federal rule requires a kit by name.

Is there a standard spill kit size?

No. No regulator sets a spill kit size, and kits are sold by absorbent capacity in litres, from a few tens of litres in a grab bag to several hundred in a wheeled bin. The usual rule of thumb, which has no legal force, matches that capacity to the largest container that could spill outside a bund. A bag kit suits a 20 litre jerry can, and a 205 litre drum calls for a bin or drum kit of 205 litres or more.

What should an oil spill kit contain?

Oil-only absorbent, usually white, which takes up oil, diesel and petrol and repels water. Pack it as pads and rolls for flat spills, socks to ring a spill and guard a drain, pillows for a pool and loose granules for cracks and rough ground. Add a drain seal, leak sealing putty, gloves, goggles, a coverall and disposal bags. For petrol and other flammable liquids, HSE guidance asks you to consider non-combustible absorbent granules for small spills.

How do you clean up an oil spill on a concrete floor?

Stop, contain, absorb, dispose. Stop the leak at its source, then ring the spill with absorbent socks and cover any nearby drain. Spread granules or lay pads over the oil; granules reach into cracks and rough concrete. Sweep up every granule, then bag and label the used absorbent, which counts as hazardous waste once oil has soaked it. Never wash oil into a drain or use detergent unless your pollution plan, agreed with the regulator, allows it.

References

The standards and regulations this page relies on, at their issuing body. Where a market rule is named here, check the current revision before you specify against it.

Last reviewed by Clarence Cheang, Co-Founder.

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