Gallium Metal - 99.99% Pure 250g

The classroom quantity. 250 grams is enough to run several groups at once rather than passing a single vial around a room — which is the difference between a demonstration students watch and an experiment they do.

It is the size most Australian schools order.

What you get

• 250g of 99.99% (4N) pure gallium in a sealed screw-top vial
• A 10mL syringe for dispensing into smaller containers
• A Safety Data Sheet, supplied with every order as standard

At 5.91 g/cm³, 250 grams is roughly 42 mL of liquid — enough to split across four or five working stations and still keep a reserve.

Why 250g for teaching

Multiple stations. Divide it into smaller vials so groups work simultaneously. Gallium is fully reusable, so the same 250g serves year after year — melting and resolidifying doesn't consume or degrade it.

It covers the whole curriculum sequence. States of matter and phase change, physical versus chemical change, density, expansion on freezing, and grain-boundary embrittlement via the aluminium can. See gallium for education for curriculum notes.

It replaces mercury. Mercury has been progressively removed from Australian school laboratories. Gallium demonstrates several of the same properties with none of the toxicity, handling regime or disposal problem.

For school and university buyers

• Safety Data Sheet in Australian 16-section format, naming Gallium Sales as supplier — the document required before a chemical enters a prep room
• Certificates of analysis with lot number and assay, available on request
• Written quotes showing ABN, quote number, ex-GST line pricing, freight and validity date
• Purchase orders accepted from schools and universities

See for schools and universities.

Solid or liquid on arrival?

Either, depending on the weather — gallium melts at 29.8°C. Arriving liquid is completely normal and nothing is lost. Chill the sealed vial to resolidify it, or stand it in warm water to melt it.

Handling

Non-toxic and safe to handle with normal care. Wash hands afterwards. Keep it away from aluminium — gallium permanently embrittles aluminium and the damage is irreversible, which matters in a school with aluminium fittings and equipment. It also stains fabric and porous surfaces.

Price per gram

$2.02/g, against $2.20/g at 100g and $2.80/g at 20g.

Dispatched from Perth within 1–3 business days.