Lab safety coordinator with a tablet checking acid bottles inside a blue corrosive storage cabinet with a white polyethylene spill tray

Acid Storage Cabinets and Corrosive Safety Cabinets for Labs

Steel acid cabinets with polyethylene trays and metal-free polypropylene cabinets, 12 to 60 gallons, with separate storage for acids and bases. Sized to your inventory and placed where your lab works. Shop online or get a quote.

Talk with a lab safety storage specialist: (801) 855-8560 · Sales@Labs-USA.com

Lab safety coordinator with a tablet checking acid bottles inside a blue corrosive storage cabinet with a polyethylene tray

What an Acid and Corrosive Cabinet Does

Acid and corrosive cabinets store strong acids such as hydrochloric, sulfuric, nitric and hydrofluoric acid, and strong bases such as sodium and potassium hydroxide. Unlike flammable cabinets, which are built to resist fire, acid cabinets are built to resist chemical attack and to contain leaks.

High-sided white polyethylene spill tray on the bottom shelf of a blue corrosive cabinet holding amber acid bottles

They do this with corrosion-resistant materials (polyethylene-lined or epoxy-coated steel, or metal-free polypropylene), leak-proof trays, non-metallic shelves and, when needed, vent connections. They are one part of our full range of laboratory safety cabinets.

Blue is the usual color for acid and corrosive storage so staff can tell it apart from yellow flammable cabinets at a glance, and every cabinet should carry a corrosives warning label.

Steel vs. Polypropylene Acid Cabinets

White welded polypropylene acid storage base cabinet with plastic hinges and a spill tray under a fume hood

Coated steel with polyethylene trays is the most common and lowest-cost option. It suits sealed bottles of mineral acids and bases in general labs, as long as trays catch drips and caps stay tight.

Metal-free polypropylene cabinets have welded plastic bodies, plastic hinges and no exposed metal. Choose them for fuming acids (hydrochloric, nitric), hydrofluoric acid, wet or humid rooms, and under acid-digestion fume hoods where vapors would rust steel hardware.

FeatureCoated steel cabinetPolypropylene cabinetWood cabinet
Best forSealed acids and bases in general labsFuming acids, HF, humid rooms, under acid hoodsSome industrial and teaching uses
Corrosion resistanceGood with trays and coatingsExcellent; no metal to rustGood, but absorbs spills
Fire resistanceBetter; steel bodyLower; plastic bodyModerate
Typical sizes12 to 60 gal, under-counter, slimlineUnder-hood bases to tall cabinetsBenchtop to tall
Relative costLowestHigherVaries

Wondering about price? Our safety cabinet cost guide compares steel and polypropylene budgets.

Acid Cabinet Sizes and Configurations

ConfigurationTypical capacityWhere it fits
Compact or benchtop4 to 12 galOn a counter or under a wall cabinet for small daily-use quantities
Piggyback17 galStacked on top of a flammable cabinet to save floor space (keep hazards separate)
Under-counter22 to 30 galBeneath a 36-in. counter or in the casework run
Under-fume-hood baseVaries by hood widthBelow the hood work surface, often polypropylene
Slimline22 galNarrow aisles and corners
Standard upright30 to 45 galMost labs; two doors, adjustable trays
Large upright60 galCentral stockrooms and plant labs

Pick capacity from your inventory, not the room size. Add up the volume of acids and the volume of bases you keep at the point of use, then leave room for growth and for containers to sit inside trays without stacking.

Two-door steel acid and corrosive safety cabinet with a corrosives warning label

Check door swing, aisle width and the space under your counters before you order. Some common sizes are in stock at select manufacturers, subject to confirmation.

Store Acids and Bases Separately

Lab technician carrying a 2.5 liter amber acid bottle in a rubber safety carrier through the lab

Acids and bases react violently with each other, so they must never share an open shelf or tray. Use two cabinets, or one cabinet with separate, sealed compartments for acids and bases.

  • Oxidizing acids (nitric, perchloric, chromic) should be kept apart from organic acids such as acetic and formic acid, and from flammables.
  • Hydrofluoric acid attacks glass and metal; store it in compatible plastic containers inside a polypropylene cabinet.
  • Move bottles safely in a rubber bottle carrier between the cabinet and the bench.

Always follow the storage section (Section 7) of each safety data sheet. Our chemical storage rules and compatibility chart shows which groups can and cannot share a cabinet.

Do Acid Cabinets Need Ventilation?

Venting is not required by OSHA for acid cabinets, but it is often recommended. Corrosive vapors from fuming acids escape even sealed caps, rust hinges and shelves, and can reach nearby instruments. A vented cabinet connected to a corrosion-resistant exhaust duct keeps those vapors out of the room.

Venting tips

  • Use corrosion-resistant duct (for example PVC or polypropylene) sized to the cabinet’s vent collar.
  • Connect to a dedicated exhaust or an approved connection designed for it, not by simply cutting into a fume hood duct.
  • If the cabinet is not vented, keep the vent openings capped.
  • Polypropylene cabinets under acid fume hoods are often vented through the hood base by design.

Labs USA coordinates vent collars and duct routing with your mechanical contractor during design.

Where to Put Acid Cabinets

Put corrosive cabinets close to where acids are used, such as the wet bench or digestion hood, so bottles travel the shortest possible distance. Keep a clear path to an eyewash station and emergency shower, and never block exits.

Blue corrosive storage cabinet at floor level in a manufacturing lab beside the wet chemistry bench

Keep acid cabinets apart from flammable cabinets where possible, and anchor tall cabinets to the wall in seismic areas.

Acid storage base cabinets with corrosion-resistant lined interiors under a laboratory countertop

Under-counter and under-hood storage keeps acids at floor level, the safest height for heavy bottles, and frees floor space. Lined base cabinets can be built into the casework run so the storage matches the rest of the lab.

See laboratory casework for matching base cabinets.

Acid Cabinet Requirements Checklist

RequirementWhy it matters
Corrosion-resistant interior or traysPrevents leaks from eating through steel shelves and floors
Separate acids from basesPrevents violent reactions in a spill
Oxidizing acids kept from organics and flammablesReduces fire risk
Labeled “Corrosive” with a contents listSupports emergency response and inspections
Trays inspected and cleanedLeaks are caught before they spread
Eyewash and shower within reachRequired where corrosives can splash

For the full set of OSHA, NFPA and fire-code rules, see our safety cabinet compliance guide and the corrosive storage planning guide for plant labs.

Get a quote on acid and corrosive cabinets

Tell us which acids and bases you store and how much. We will recommend steel or polypropylene, the right sizes and the best locations, and quote delivery and installation.

Acid and Corrosive Cabinet FAQs

Why can’t I store acids in a flammable cabinet?
Flammable cabinets are painted bare steel, and acid vapors corrode them quickly. Acid cabinets use polyethylene trays, corrosion-resistant coatings or metal-free polypropylene. Also, flammable cabinets are usually not vented, while acid cabinets often are.
Do acid cabinets need ventilation?
OSHA does not require it, but venting is often recommended to remove corrosive vapors that damage hinges, shelves and nearby equipment. If you vent, use corrosion-resistant duct to an approved exhaust; if not, keep the vent openings capped.
Can acids and bases be stored in the same cabinet?
Only in separate, sealed compartments. Acids and bases must never share an open shelf or tray because they react violently if mixed.
Should I choose steel or polypropylene?
Coated steel with polyethylene trays works for sealed mineral acids and bases in most labs and costs less. Choose polypropylene for fuming acids, hydrofluoric acid, humid rooms or under acid-digestion fume hoods.
What sizes do acid cabinets come in?
Common sizes run from 4 to 12 gallon benchtop units, 17 gallon piggyback units, 22 to 30 gallon under-counter cabinets, up to 45 and 60 gallon uprights. Under-fume-hood bases match the hood width.
Why are acid cabinets blue?
Blue is the industry convention for corrosives so staff can tell them apart from yellow flammable cabinets. Color is not a legal requirement, but a corrosives label is expected.
Where should hydrofluoric acid be stored?
Store HF in compatible plastic containers inside a polypropylene cabinet or compartment, away from glass, metal and other acids, and keep calcium gluconate first aid nearby as your safety plan requires.
Are acid cabinets in stock?
Some common sizes are in stock at select manufacturers, subject to confirmation. Call (801) 855-8560 to confirm availability and lead time.

Need Acid Storage Cabinets? Get a Free Quote

Steel and polypropylene acid and corrosive cabinets, sized to your chemicals and installed by Labs USA.