Chemical Spill Kits

Chemical spill kits use yellow absorbents specifically designed to safely absorb corrosive acids, strong alkalis, solvents, and aggressive chemicals that would destroy standard grey or white absorbents — and that require chemically-inert materials to prevent dangerous secondary reactions. BS 7959 colour-coded. COSHH and DSEAR compliant. From compact 20L laboratory kits to 240L wheeled bins. UK next day delivery available.

What Are Chemical Spill Kits?

A chemical spill kit is a specialist spill response system for hazardous chemical liquids that require more than standard absorbent materials. The defining feature is the yellow absorbent — designated under BS 7959-1:2004 as the hazchem or chemical grade, manufactured from chemically inert materials that will not react with acids, alkalis, or aggressive solvents.

The critical difference from other kit types: white oil spill kit absorbents are hydrophobic (they repel water) and grey general purpose absorbents are designed for mixed fluids — but neither is chemically inert. When used on concentrated acids or strong alkalis, standard absorbents can degrade rapidly, generate heat, or fail to absorb effectively, creating additional safety risks. Yellow chemical absorbents are engineered to safely handle this class of hazard.

What yellow chemical absorbents handle: Sulphuric acid, hydrochloric acid, nitric acid, phosphoric acid, battery acid, sodium hydroxide (caustic soda), ammonia solution, bleach, solvent-based degreasers, acetone, ethanol, IPA (isopropyl alcohol), and most hazchem classified liquids.

Who uses chemical spill kits? Laboratories (university, industrial, NHS), chemical manufacturing plants, battery charging areas (forklift battery sulphuric acid), pharmaceutical facilities, cleaning chemical distributors, agricultural chemical stores, water treatment facilities, and any business storing or handling hazchem-classified substances.

Types of Chemical Spill Kits

Laboratory Chemical Spill Kits (20–30L)

Compact holdall or grab bag kits for laboratory environments. Contains smaller-format pads and socks appropriate for bench or floor spills in laboratory settings. Often includes a response guide specific to common laboratory chemical hazards.

Portable Vehicle & Field Kits (20–30L)

Holdall or grab bag for engineers, maintenance vans, and chemical delivery vehicles. Drivers transporting hazchem goods under ADR regulations should carry an appropriate chemical spill kit as part of their vehicle emergency equipment.

Workshop & Manufacturing Kits (50–120L)

Barrel or bin-format kits for fixed deployment in chemical storage areas, mixing rooms, and manufacturing bays. Larger pad and sock quantities handle substantial accidental releases.

Wheeled Bin Chemical Kits (240L)

Maximum-capacity mobile response — a lockable 240L wheeled bin loaded with yellow hazchem absorbents, drain cover, chemical-resistant PPE, and disposal bags. Standard for large manufacturing sites, chemical warehouses, and facilities with multiple chemical risk zones.

Key Features & Specifications

Kit Size	Container	Chemicals Absorbed	Typical Application
20–30L	Holdall / grab bag	Acids, alkalis, solvents, hazchem	Laboratory, vehicle, delivery driver
50L	Barrel	Acids, alkalis, solvents	Small chemical storage, dispensing area
90–100L	Bin / barrel	Full hazchem range	Manufacturing chemical zone
120–150L	Bin / station	Full hazchem range	Chemical distribution, industrial mixing
240L	Wheeled bin	Full hazchem range	Large manufacturing, chemical warehouse

Standard contents across chemical spill kits:

• Yellow chemically inert absorbent pads
• Yellow absorbent socks / booms
• Chemical-resistant drain cover sheet
• Nitrile or chemical-resistant gloves
• Safety goggles
• Hazardous waste disposal bags (UN-approved where applicable)
• Response guide / COSHH emergency instructions

Acid Spill Kits with Neutraliser

For sites handling concentrated acids (sulphuric, hydrochloric, nitric, phosphoric, battery acid), we strongly recommend adding an acid neutraliser to your chemical spill kit.

Why neutralise before absorbing? Concentrated acid absorbed directly into pads without neutralisation creates hazardous, highly acidic waste that continues to pose a burn risk during disposal. A strong acid can also generate heat on contact with some absorbent materials, creating secondary hazards. Neutralising with sodium bicarbonate or calcium carbonate powder first renders the acid safe before absorption and waste disposal.

pH indicator strips are included in premium acid kit bundles to confirm that neutralisation is complete (pH 6–8) before absorbents are applied — a best practice increasingly expected during COSHH assessments for acid-handling facilities.

Compliance & Legal Requirements

• The Control of Substances Hazardous to Health Regulations 2002 (COSHH) — any business storing or handling substances classified as hazardous to health (which includes most acids, alkalis, and solvents) must conduct a COSHH risk assessment and provide adequate emergency spill response equipment appropriate to the hazard. Using a general purpose grey kit for a chemical hazard is a COSHH violation.
• The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) — solvents and flammable chemicals require additional spill response provisions including anti-static absorbents and elimination of ignition sources during cleanup. Standard chemical kits should be upgraded to anti-static versions for flammable chemical environments.
• BS 7959-1:2004 — the British Standard for sorbent performance and colour coding. Yellow absorbents are the designated hazchem grade. Using BS 7959 compliant yellow absorbents provides demonstrable evidence of appropriate spill response during HSE or EA inspections.
• The Hazardous Waste Regulations 2005 — used chemical absorbents are classified as hazardous waste and must be disposed of through a licensed hazardous waste carrier. The disposal bags in compliant chemical spill kits are suitable for this purpose.
• The Water Resources Act 1991 — allowing chemicals to enter drains or controlled water is a criminal offence. The drain cover in chemical spill kits is a critical element in preventing this.

Industries & Applications

• Laboratories: Universities, NHS trusts, industrial research labs, and quality control laboratories regularly handle acids, alkalis, and solvents. Lab-specific kits in 20–30L formats are standard for bench and fume cupboard spill response.
• Chemical Manufacturing & Processing: Bulk chemical handling facilities require 90–240L kits at process stations. Material compatibility with specific process chemicals should be confirmed before ordering.
• Battery Maintenance (Forklift): Forklift battery watering and charging produces sulphuric acid risk. Every battery charging station should have a yellow chemical spill kit with acid neutraliser and face shield as standard equipment.
• Pharmaceutical Manufacturing: Active pharmaceutical ingredients often involve strong acids and alkalis. GMP (Good Manufacturing Practice) environments require documented spill response procedures and appropriate kits.
• Water Treatment: Dosing chemicals including sodium hypochlorite, sulphuric acid, and sodium hydroxide are used at all water treatment sites. Chemical spill kits must be sited at each dosing point.
• Agricultural Chemical Storage: Pesticides, herbicides, and fertiliser concentrates in COSHH stores. Yellow kits are appropriate for agricultural hazchem areas.

Buying Guide — How to Choose a Chemical Spill Kit

Confirm Yellow is Required

Yellow chemical spill kits are necessary when: your site handles acids (pH below 4), strong alkalis (pH above 10), reactive solvents (acetone, ethanol, IPA), hazchem-classified cleaning agents, or any substance classified as corrosive, toxic, or harmful under CLP regulations. For mild, dilute chemicals in a general maintenance environment, a grey general purpose kit may suffice.

Consider Adding Acid Neutraliser

If your site handles concentrated acids — particularly battery acid (sulphuric acid), hydrochloric acid, or nitric acid — always include an acid neutraliser. The cost of adding neutraliser to a kit is minimal compared to the additional safety and risk reduction it provides.

Match Capacity to Spill Risk

Assess the largest volume of chemical that could be spilled from a single event (dropped container, failed drum, overturned tray). Your kit capacity should comfortably exceed this volume. For laboratory environments with 2.5L reagent bottles, a 20–30L kit is appropriate. For bulk chemical drum areas, 90–240L is typically required.

PPE Specification

Ensure the PPE included in the kit is appropriate for your chemical type. Nitrile gloves protect against most common chemicals. For hydrofluoric acid, oxidising acids, or highly toxic substances, specialist PPE beyond the standard kit contents is required — consult your Safety Data Sheets.

Frequently Asked Questions

Why are chemical spill kit absorbents yellow?

Under BS 7959-1:2004, yellow is the designated colour code for chemical-grade (hazchem) absorbents — chemically inert materials that safely absorb acids, alkalis, and aggressive solvents without reacting with the spilled substance. The colour coding allows instant identification of the correct kit type during a spill emergency and provides evidence of compliant response during HSE or Environment Agency inspections.

Do I need a neutraliser with my chemical spill kit?

Yes, if you handle concentrated acids. Acid neutraliser (typically sodium bicarbonate or calcium carbonate powder) should be applied before absorbent pads to reduce the acid to a near-neutral pH, eliminating the burn risk during cleanup and reducing the hazard classification of waste for disposal. For dilute acids (below pH 4) or mild alkalis, absorbent-only kits are generally acceptable.

Can I use a chemical spill kit for an oil spill?

Technically yellow absorbents will absorb oil, but they are not hydrophobic (oil-selective) and are less efficient for oil-only spills. They are also more expensive than white oil spill kit absorbents. If your site has both chemical and oil hazards, use the correct kit for each: yellow for chemicals, white for oil-only areas. Using yellow kits for everything is an inefficient and unnecessary cost.

What's the difference between a chemical spill kit and a hazchem kit?

The terms are interchangeable in UK industrial practice. Both refer to yellow BS 7959 absorbent kits for hazchem-classified liquids. Some suppliers use "hazchem" to emphasise the kit's suitability for substances regulated under ADR transport and COSHH, while "chemical spill kit" is the more widely used commercial term. The product is the same.

How do I dispose of used chemical spill kit absorbents?

Used chemical absorbents are classified as hazardous waste under The Hazardous Waste Regulations 2005 and must be disposed of through a licensed hazardous waste carrier. Seal all used absorbents in the disposal bags provided, label clearly with the chemical hazard, and arrange collection through your hazardous waste contractor. Do not place chemical absorbents in general trade waste bins.

Why Buy From Spill Control Products UK?

• Genuine BS 7959 Yellow Absorbents: Our yellow pads are chemically inert and meet the British Standard for hazchem sorbency — not general purpose pads with yellow packaging.
• Acid Neutraliser Bundles: Available to add to any kit — pre-weighed neutraliser packs with pH indicator strips for professional acid spill response.
• Full Size Range: 20L laboratory holdalls to 240L wheeled bins — the complete range for every chemical hazard environment.
• Specialist Kits Available: Laboratory-specific kits, vehicle grab bags, forklift battery acid kits, and anti-static versions for flammable chemical environments.
• Refill Packs: Replace only the components used — cost-effective ongoing kit maintenance for all sizes.
• Next Day UK Delivery: In-stock kits available for next day delivery throughout the UK mainland.

For related products, see our white oil spill kits for hydrocarbon-specific applications, grey general purpose spill kits for mixed-fluid environments, and chemical storage units for COSHH-compliant hazardous substance storage.