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Vicat softening temperature or Vicat hardness is the determination of the softening point for materials that have no definite melting point, such as plastics. It is taken as the temperature at which the specimen is penetrated to a depth of 1 mm by a flat-ended needle with a 1 mm 2 circular or square cross-section.
Louis Vicat (31 March 1786, Nevers – 10 April 1861, Grenoble) was a French engineer. He graduated from the École Polytechnique in 1804 and the École des Ponts et Chaussées in 1806. Vicat studied the setting of mortars and developed his own.
The softening point is the temperature at which a material softens beyond some arbitrary softness. [1] It can be determined, for example, by the Vicat method (ASTM-D1525 or ISO 306), Heat Deflection Test (ASTM-D648) or a ring and ball method (ISO 4625 or ASTM E28-67/E28-99 or ASTM D36 or ASTM D6493 - 11 or JIS K 6863).
Pritchard's politzerization apparatus: video link: Aural/Ear syringe: used to flush out anything like ear wax or foreign bodies from the external ear Toynbee's auscultation tube: Otoscope/Auriscope: to examine the external auditory canal and ear drum; used during aural toileting, removal of wax, myringotomy, stapedectomy and to dilate the ...
Hypodermic needle: for injections, infusions, etc. Tuohy needle: for epidural catheter insertion Spinal needle: used for puncturing the spinal canal for injection of medications in spinal anaesthesia: Epidural catheter: used to administer medications into the epidural space Syringe: to inject medications Mucus sucker
World locations of Vicat. The company was established in 1853 by Joseph Vicat (1821–1902), son of Louis Vicat, who invented artificial cement in 1817. His cement plant was at Genevrey-de-Vif south of Grenoble . It used an argillaceous limestone that Joseph Vicat had established as suitable by chemical analysis. The company expanded in 1922 ...
The needles, if ingested, can irritate your pet's mouth and gastrointestinal tract due to their oils, PetMD reports. If consumed in large quantities, the needles could cause " severe toxicity ."
An inoculation loop (also called a smear loop, inoculation wand or microstreaker) is a simple tool used mainly by microbiologists to pick up and transfer a small sample of microorganisms called inoculum from a microbial culture, e.g. for streaking on a culture plate.