Winward, offer an extensive range of the highest quality Platinum Crucibles at very competitive prices

Winward Engineering offer a comprehensive range of Zirconium crucibles, Platinum Crucibles, Stainless Steel crucibles, Pure Iron crucibles and Nickel crucibles. These crucibles are manufactured on site* at our UK ISO 9001:2000 accredited facility to the highest standard. Our customers across the globe include a diverse range of companies, including large multinational mining/smelting companies, small laboratories and laboratory supply wholesalers. We also regularly manufacture crucibles to customers own special sizes and metals where required. If the material or size is not shown here please contact us for a quick quotation.

Zr702, Pt 95.5%, Ni200, Ni201, St/St 304L, 314L

Please note we quote for Platinum Crucibles per gram, per day as fluctuations in exchange rate and Platinum prices vary daily. Please email on sales@winward.co.uk or phone for a quick quotation by return.

We also offer the following products:

Zirconium Crucibles Information - Facts and Advantages

The remarkable corrosion resistant qualities of Zirconium are used extensively in the Chemical Processing Industry. Zirconium will withstand a wider range of caustics and acids to a greater degree than any other commonly used fabricating material.

Zirconium Crucibles

It is no secret that zirconium crucibles cost more than porcelain, steel or nickel. Quite a bit more. But, based on an average number of fusions which can be made in a zirconium crucible, as opposed to those of nickel, the ratio of longevity stands at 20 to 1. Therefore, the higher cost of zirconium crucibles is recovered three times over. In addition to cost effectiveness, zirconium crucibles hold several advantages over other materials.

If compared to platinum crucibles, several distinct advantages are readily apparent.

1. Improper procedure in heating over a Bunsen burner can cause the reducible contents to be converted into harmful, low-fusing metals which may react with the platinum crucibles.

2. No platinum tipped tongs or special triangles are required for handling hot zirconium crucibles,as they are with platinum..

3. Sudden contact with cold, metallic surfaces will have no deleterious effects on a zirconium crucible.

4. Hydrofluoric acid is the only cleaning agent which should not be used to clean zirconium crucibles.

5. Smoothing and shaping after use is not a special consideration. Zirconium crucibles require a minimum of specialized care.

6. The inherent strength of zirconium precludes the necessity of reinforced rims and thicker bottoms as is the case of platinum crucibles in certain instances.

Zirconium crucibles are especially adaptable to the needs of the analytical chemistry laboratory, such as in strong alkaline fusions employed to reduce refractory samples to a soluble form, and for high temperature ignition ashing purposes.
Zirconium metal is a most effective all-round crucible for fusions using sodium carbonate or sodium peroxide and is an excellent low-cost replacement for platinum crucibles. Based on an average of 100 fusions per crucible, zirconium is more cost-effective than less expensive crucibles of porcelain or steel.
Should however your reqirements demand a Platinum Crucible, Winward offer an extensive range, please contact us for more details.

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Platinum Crucibles Information - Facts and Advantages

Platinum crucibles and dishes are made to obtain maximum service life when used under normal conditions. The capacities and shapes have been selected so that most laboratory requirements can be met. A non-standard Platinum crucible can be produced so long as assistance with design is provided where necessary.

Platinum crucibles offer high temperature strength and high melting point. A Platinum crucible offers oxidation resistance in air and oxygen; and corrosion resistance in acids and melted salts. Protect your investment with platinum tongs that reduce possible damage and scratches to platinum crucible when hot. Manufactured in standard form, platinum crucible Lids sold separately.

Platinum is a beautiful silvery-white metal, when pure, and is malleable and ductile. Platinum has a coefficient of expansion almost equal to that of soda-lime-silica glass, and is therefore used to make sealed electrodes in glass systems.

Platinum does not oxidise in air, It is insoluble in hydrochloric and nitric acid, but dissolves when they are mixed as aqua regia, forming chloroplatinic acid (H2PtCl6), an important compound. It is corroded by halogens, cyanides, sulphur and alkalis. Hydrogen and oxygen gas mixtures explode in the presence of platinum wire.

Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals (PGM). All can be used to make a Platinum Crucible depending on you specific requirement, please contact Winward for more information.

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