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Three beakers, an Erlenmeyer flask, a graduated cylinder and a volumetric flask. Laboratory glassware is a variety of equipment used in scientific work, traditionally made of glass.
(A) A low-form or Griffin form beaker (B) A tall-form or Berzelius beaker (C) A flat beaker or crystallizer Philips beaker which can be swirled like a conical flask. Standard or "low-form" (A) beakers typically have a height about 1.4 times the diameter. [3]
A Büchner funnel with a sintered glass disc. A Büchner funnel is a piece of laboratory equipment used in filtration. [1] It is traditionally made of porcelain, but glass and plastic funnels are also available.
A funnel (E) contains a sample of soil or leaf litter (D), and a heat source (F), in this case an electric lamp (G), heats the sample. Animals escaping from the desiccation of the sample descend through a filter (C) into a preservative liquid (A) in a receptacle (B).
Cetyl alcohol / ˈ s iː t əl /, also known as hexadecan-1-ol and palmityl alcohol, is a C-16 fatty alcohol with the formula CH 3 (CH 2) 15 OH. At room temperature, cetyl alcohol takes the form of a waxy white solid or flakes.
Frontispiece and incipit from the Vatican manuscript. The so-called Gelasian Sacramentary (Latin: Sacramentarium Gelasianum) is a book of Christian liturgy, containing the priest's part in celebrating the Eucharist.
An Egyptian wall-painting in the tomb of Hesy-Ra, dating to 2600 BC, shows a wooden tub used to measure wheat and constructed of staves bound together with wooden hoops. [8]
The tremie concrete placement method uses a vertical or nearly vertical pipe, through which concrete is placed by gravity feed below water level. [4]The lower end of the pipe is kept immersed in fresh concrete so that concrete rising from the bottom displaces the water above it, thus limiting washing out of the cement content of the fresh concrete at the exposed upper surface.