W1 Common LAB APPARATUS

• Identify:

  BEAKER

  
• Identify:

  GRADUATED CYLINDER

  
• Identify:

  TEST TUBES

  
• Identify:

  TEST TUBE HOLDER

  
• Identify:

  TEST TUBE BRUSH

  
• Identify:

  TEST TUBE RACK

  
• Identify:

  IRON STAND

  
• Identify:

  IRON RINGS

  
• Identify:

  IRON CLAMP

  
• LABEL EQUIPMENTS

  
• Identify:

  ALCOHOL LAMP

  
• Identify:

  BUNSEN BURNER

  
• Identify:

  WIRE GAUZE

  
• Identify:

  VOLUMETRIC FLASK

  
• Identify:

  ERLENMEYER FLASK

  
• Identify:

  DISTILLATION FLASK

  
• DISTILLATION APPARATUS

  
• Identify:

  BURETTE CLAMP

  
• Identify:

  BURETTE

  
• LABEL EQUIPMENT:

  
• Identify:

  EVAPORATING DISH

  
• Identify:

  WATCH GLASS

  
• Identify:

  MORTAR and PESTLE

  
• Identify:

  CLAY TRIANGLE

  
• Identify:

  TRANSFER PIPETTE

  • graduated or ungraduated plastic pipettes
  • graduated versions indicate TOTAL VOLUME or may promise to deliver drops of specific sizes (but volumes are usually approximate).

  
• Identify:

  SEROLOGICAL PIPETTE

  • designed for use as a blow-out pipette
  • has graduation marks, which start nearer the end of the tip
  • designation of whether the pipette is "to deliver" (TD) or "to contain" (TC) is marked on most of these

  
• Liquid was drawn up to exactly the zero mark and was then dispensed. Reading the value at the bottom of the meniscus shows that 3.19 mL of liquid was delivered.

  
• This is a serological pipette calibrated so that the tip includes the last milliliter.

  The bands at the top indicate that this pipette is to be " blown out ".

  Note that this pipette has a scale that extends above zero to expand the calibrated capacity of the pipette. Thus, this is really an 11.0 mL pipette.

  The center diagram show how one would measure 3.2mL using the 'blow out' technique.

  The diagram on the right shows how one could measure 3.2mL using a point to point technique.

  Both techniques equally accurate.

  
• Identify:

  MOHR PIPETTE

  • used to measure the volume of the liquid dispensed
  • last graduation mark is some distance from the tip, to avoid errors in measuring the narrower volume of the nozzle
  • designed for use as a drain-out pipette

  
• These types of pipettes are only used to measure using a point-to-point delivery system.

  Mohr Pipettes aren't commonly used in microbiology applications.

  
• "A" valve to release air

  "E" valve to empty pipette

  "S" valve to siphone liquid

  Port - pipette is inserted here

  
• Identify:

  MICROPIPETTE

  • Precision instruments designed to accurately and precisely transfer volumes in the MICROLITER range
  • most widely used TRANSFER DEVICE in the clinical laboratory

  
• Identify:

  PIPETTE TIPS

  
• MICROPIPETTE

  • Used to measure and deliver ACCURATE volume of liquid
  • Works by DISPLACING the air from the Pipette Shaft and allow the liquid to be drawn into the Resulting Vaccum

  
• Identify:

  MULTI-CHANNEL PIPETTE

  
• Identify:

  SEROLOGICAL PIPETTE

  
• Separating Mixtures - Decanting