71mm zirconia block features 6 layers of natural color transition, matching color gradient of natural tooth from cervical to incisal. Translucency changes from 57% in incisal to 43% in cervical. It shows gradient decrease, achieving life-like transparency of natural tooth enamel while low transparency in cervical has effective opaque. Strength gradient is from 600 Mpa to 900 Mpa. It achieves low strength in occlusion and causes no harm to opposing dentin. High strength in base part realizes long bridge restoration.
http://www.zirconiablocks.com/....zirconia-block/71mm-

A PTFE magnetic stir bar is a device widely used in laboratories and consists of a rotating magnet or a stationary electromagnet that creates a rotating magnetic field. This device is used to make a stir bar, immerse in a liquid, quickly spin, or stirring or mixing a solution, for example.

Chemically resistant PTFE beaker is isostatically molded from virgin PTFE and machine finished to give a smooth surface for ease of cleaning and to eliminate contamination.
http://www.xieyinglabware.com/....ptfe-labware/ptfe-ma

Non-ferrous metals are alloys or metals that do not contain any appreciable amounts of iron. All pure metals are non-ferrous elements, except for iron (Fe), which is also called ferrite from the Latin "ferrum," meaning "iron." Non-ferrous metals tend to be more expensive than ferrous metals but are used for their desirable properties, including light weight (aluminium), high conductivity (copper), non magnetic properties or resistance to corrosion (zinc).
http://www.sscmaterials.com/non-ferrous-metals/

Poly vinyl chloride resin or PVC resin as it is popularly called, is a thermoplastic Resin which can be softened on reheating. A common term for this commodity polymer is Vinyl. Often available in the form of a powder, PVC granules are highly resistant to oxidisation and degradation caused by atmospheric reaction. In its raw form, it appears as a white powdery solid. Economical, versatile polyvinyl chloride (PVC, or vinyl) is used in a variety of applications in the building and construction, health care
http://www.sanxiplastic.com/pvc-resin/

Empty capsule is the most common option to store herbs, powders and medicines. For the instruction of using the empty capsule, put the top half of the capsule over the bottom and press down. Once you've got the bottom of the capsule filled, gently replace the top of the capsule. You should hold the bottom of the capsule gently in one hand, then use the other to press the top of the capsule down. The capsules should be stored in a cool, dark place.
http://www.mycapsuletoy.com/empty-capsule-1