Download
slide1 n.
Skip this Video
Loading SlideShow in 5 Seconds..
Electronic Balance PowerPoint Presentation
Download Presentation
Electronic Balance

Electronic Balance

968 Vues Download Presentation
Télécharger la présentation

Electronic Balance

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Electronic Balance Important: Easily broken by placing too much mass on the pan Use: to mass less than 200 grams of a substance

  2. Material: metal with porcelain top Hot Plate Use: to heat substances when a burner is not necessary or safe. Sometimes may have a magnetic stirrer as well.

  3. Safety Goggles Material: plastic, splash resistant Use: to be worn at all times during labs in which chemicals, heat or glassware is used.

  4. Filter Paper Material: paper circles, various sizes Use: folded in quarters, used in funnels to filter solutions

  5. Mortar and Pestle Material: porcelain Use: to grind crystals and lumpy chemicals to a powder

  6. Weighing Trays or Weigh Boats Material: Flexible plastic in various sizes Use: to keep chemicals off the balance pan.

  7. Scoopula Material: Metal or metal with wood handle Use: to transfer solid chemicals

  8. Thermometer Important: Never use as a stirring rod Material: alcohol (red) or mercury in glass (not likely), common range -10°C to 110°C Use: to measure temperature

  9. Pipet Important: Never pipet by mouth Material: glass or plastic, graduated, various sizes Use: to measure solution volumes, less accurate than a volumetric pipet

  10. Pipet Safety Bulb Important: Never pipet by mouth Material: rubber Use: to fill a pipet with solution

  11. Stirring Rod Material: solid glass or plastic Use: to stir solutions

  12. Don’t be confused!

  13. Crucible and cover Important: Use tongs with hot crucibles Material: porcelain Use: to heat small amounts of solid substance at high temperatures

  14. Crucible tongs Important: beware of hot porcelain or glassware Material: iron, nickel or brass Use: to pick up and hold small usually very hot items

  15. Clay triangle Material: wire frame with porcelain supports Use: used to support a crucible

  16. Transfer Pipet Material: plastic Use: to dispense and transfer small volumes of solution

  17. Beral pipet - thin stem Material: plastic Use: to dispense and store small quantities of solution

  18. 24-well spot plate Material: plastic, may have cover Use: reaction vessels for small quantities of solution

  19. 96-well spot plate Material: plastic Use: in place of test tubes in microchemistry

  20. Bunsen burner and burner tubing Material: metal, connected to gas supply with burner tubing Use: to heat chemicals (dry or in solution) in beakers, test tubes, flasks and crucibles

  21. Striker Material: metal with flint Use: to create a spark to light gas burners

  22. Wire gauze or wire mesh Material: metal mesh, may have ceramic center Use: to spread the heat of a burner flame

  23. Watch glass Material: glass Use: to cover an evaporating dish or beaker

  24. Test tube clamp or test tube holder Material: metal spring mechanism Use: to hold test tubes or glass tubing

  25. Test tube Important: Beware of hot glass. Use a test tube holder when heating. Never point a test tube at yourself or other when heating. Material: glass, various sizes Use: reaction vessel, may be heated

  26. Test tube rack Material: wood, plastic or metal Use: holds test tubes in a vertical position

  27. Test tube brush Material: bristle with wire handle, various sizes Use: to scrub small diameter glassware

  28. Utility clamp Material: metal, with or without coated ends Use: to support equipment on a ring stand, this one would need a clamp holder as well

  29. Ring clamp and clamp holder Material: metal Use: as a support on a ring stand

  30. Ring clamp - one piece

  31. Funnel Material: glass or plastic Use: Hold filter paper for filtering solutions

  32. Wash bottle Material: flexible plastic Use: hold vertically and squeeze sides to dispense water, typically deionized water only

  33. Graduated cylinder or graduate Important: Never heat Material: glass or plastic, various sizes Use: to measure approximate volumes

  34. Erlenmeyer flask Material: glass, various sizes Use: may be heated, useful for swirling solutions, used in traditional titrations

  35. Volumetric flask Material: glass or plastic, various sizes Use: for making and storing solution. The score on the neck indicates an accurate volume.

  36. Beaker Important: Beware of hot glass, use tongs Material: glass or plastic, various sizes Use: for holding solutions or dry chemicals, not for measuring, only gives approximate volume

  37. Beaker tongs Material: metal with or without rubber coated tips Use: to move hot beakers and glassware

  38. Evaporating dish Material: porcelain Use: to contain small volumes of liquid being heated or evaporated. May be heated.

  39. Ring Stand Glass or plastic with stopper and stopcock Used to separate solutions of different phases Separatory Funnel Metal rod fixed upright in a heavy metal base Used to support a variety of clamps

  40. Material: glass with stopcock,graduated,VERY EXPENSIVE Use: to measure volumes of solution in titrations Buret Doubleburet clamp Material: metal or plastic Use: to support burets on a ring stand Stopcock

  41. Fleaker

  42. Erlenmeyer flask

  43. Beaker(s)

  44. 24-well spot plate 96-well spot plate