Do I need a separate cabinet for acids and for flammables?

Yes, and this is one of the most common storage mistakes we see. Flammable liquids belong in a steel cabinet built to resist fire, with a door that self-closes and, in many designs, a fusible link that seals the cabinet if a fire raises the temperature. Acids and other corrosives attack that same steel, so they need a cabinet with a polyethylene or polypropylene lining, or a solid plastic cabinet, that will not corrode. Storing nitric acid above or beside solvents risks both corrosion of the cabinet and, in the worst case, an oxidiser meeting a fuel. Keep oxidisers such as nitrates, peroxides and chlorates away from organic material for the same reason, and store gas cylinders separately restrained by chains. If space is tight, at minimum separate by cabinet and by risk group, and never rely on a single generic steel cupboard for everything.

How much capacity do I need and how do I size a cabinet?

Count the containers you actually hold rather than estimating from the shelf space you have now, and allow room to work: a cabinet packed to the door is hard to inspect, easy to knock over and impossible to vent properly. Add up the volumes of the flammable liquids you keep and compare that with the cabinet's rated capacity, which is normally stated in litres and is based on the sum of the individual container volumes, not on the internal cubic space. Remember that many standards cap how much may be stored in a single cabinet and how much may be kept in a room, so a large library of solvents may need two cabinets rather than one oversized one. Leave the bottom tray clear, keep containers on shelves rather than the floor, and check that the shelf loading rating suits the largest containers you use.

Does a safety cabinet need ventilation?

It depends on the cabinet and the chemicals. A well-sealed flammable storage cabinet is designed to contain a fire and to limit the escape of vapour, and some standards prefer it unvented so the fusible link and door seals can do their job. Cabinets used for odorous, volatile or toxic material, and those with a perforated back or a vent port, are usually connected to an exhaust so the vapour is removed rather than released into the room. If you duct a cabinet, the exhaust must not compromise its fire performance, and the airflow must be matched so it does not draw air through the cabinet at a rate that upsets the seals. In Singapore's warm, humid conditions ventilation also helps limit corrosion of the cabinet shell and the containers inside. Follow the manufacturer's instruction for your specific model, and where the cabinet holds acutely toxic material confirm the arrangement with your safety officer.

What storage cabinets does JWRESEARCH supply in Singapore?

JWRESEARCH supplies laboratory storage cabinets in Singapore, including flammable liquid safety cabinets in the common 30, 45, 90 and 180 litre sizes, acid and corrosive cabinets with polyethylene or polypropylene linings, ventilated cabinets for odorous material, solid plastic under-bench units, spill trays, shelf inserts, door seals and restraint fittings, together with cabinet labelling, absorbent spill kits and inspection accessories. We can advise on capacity and cabinet type from your chemical inventory and quote a complete storage package for a new laboratory or an audit finding that needs closing out. Orders are dispatched locally in Singapore with volume pricing for schools, industrial laboratories and research facilities.

Sample Storage and Flammable Cabinets Singapore

Published: {{NEW_ARTICLE_DATE}} | By JWRESEARCH | Category: Laboratory Safety

Chemical storage is the part of a laboratory that gets designed once and then slowly drifts. A shelf here, a tray there, and within a year the solvents are next to the acids and nobody is quite sure what is in the back of the cupboard. The cabinet is cheap insurance against that drift.

At JW RESEARCH SUPPLY, we supply flammable storage cabinets, acid and corrosive cabinets, ventilated units and sample storage furniture to laboratories across Singapore. This guide covers cabinet types, sizing and inspection.

Cabinet Types Compared

Cabinet Type	Construction	Holds	Typical Size
Flammable safety cabinet	Double-wall steel, self-closing door, fusible link	Solvents, alcohols, flammable liquids	30 – 180 L
Acid / corrosive cabinet	Steel with PE or PP lining, or solid plastic	Acids, bases, oxidising acids	30 – 120 L
Ventilated cabinet	Steel or plastic with exhaust port	Odorous or volatile material	60 – 200 L
Under-bench plastic unit	HDPE or PP	Small reagent bottles, corrosives	20 – 60 L
Sample storage cabinet	Powder-coated steel, adjustable shelves	Retained samples, non-hazardous stock	60 – 240 L

Specification Reference

Parameter	Typical Value	Notes
Rated capacity	30 – 180 L	Sum of container volumes, not internal space
Steel gauge	1.0 – 1.2 mm	Double wall with air gap
Door type	Self-closing, single or double	Check clear opening for large containers
Shelf loading	30 – 60 kg per shelf	Match to the heaviest container
Spill tray	Integrated, 100 mm sump	Must hold the largest container volume
Earthing point	Provided	Bond and earth if dispensing on site

Segregation Rules That Matter

Flammables separate from acids and oxidisers
Oxidisers such as nitrates and peroxides away from organics
Water-reactive material away from any water or sprinkler path
Gas cylinders upright and chained, never in a chemical cabinet
Reference standards and controlled drugs in a lockable unit
Nothing stored above eye level where a dropped bottle could splash

Sizing the Cabinet

Build the number from your inventory. List every flammable container, its volume and its frequency of use, total the volumes and compare against the cabinet's rated capacity. Add headroom: a cabinet filled to the door is hard to inspect, easy to knock, and may not allow the door to close against its seal. Local regulations and site rules often cap the quantity allowed in one cabinet and in one room, so several small cabinets are frequently the compliant answer where one huge cabinet is not.

Also plan the location. Keep cabinets out of means of escape, away from ignition sources and heat, on a level floor that can carry the loaded weight, and within reach of a spill kit. Leave a gap to walls if the manufacturer requires one, and never block the ventilation port if the cabinet is ducted.

Inspection and Maintenance

Inspect monthly: check the door seals for hardening or damage, confirm the self-closing mechanism shuts and latches without help, look for rust on the shell or shelf edges, check the spill tray for standing liquid and confirm labelling is legible and correct. Test the fusible link as the manufacturer directs and record it. Where a cabinet is ducted, verify the airflow is still pulling and that the duct has not been disconnected or crushed during other works.

Keep a simple inventory sheet on the door: contents, risk group, date of last inspection and the person responsible. That single sheet does more for an audit than any amount of retrospective tidying, and it makes it obvious when a container has been sitting unused past its expiry.

Ordering Checklist

Chemical inventory by risk group and total volume in litres
Cabinet type required for each group, with door opening size
Bench or floor mounting and the available footprint
Ventilation route if the cabinet will be ducted
Spill tray, shelf inserts, labels and restraint fittings
Locking requirement for controlled or reference material

Send us your chemical list and the space available and we will propose the cabinet mix, sizes and accessories, with a segregation layout you can implement the day the cabinets arrive.

Contact JWRESEARCH

JW RESEARCH SUPPLY — laboratory equipment and consumables, Singapore.
Telephone / WhatsApp: +65 8039 3660
Email: SINGAPORE@JWSHY.COM
Website: www.jwresearch.cn