Glassware Bioscience, Equipment Unit 8/29/2015Property of CTE Joint Venture

Bellwork You need to make a cake for your friend’s birthday. What pans or bowls will you use to make the cake? Why did you select those particular pans or bowls? 8/29/2015Property of CTE Joint Venture

Purpose In order to accurately complete any of the labs in this class you will need to be able to select appropriate glassware based on the volume of liquid you will be using or mixing. 8/29/2015Property of CTE Joint Venture

Objectives Identify laboratory glassware Select appropriate glassware Use laboratory glassware Maintain control inventory for glassware 8/29/2015Property of CTE Joint Venture

Terminology Graduated Cylinders Volumetric Flasks Measuring pipettes Beakers Erlenmeyer Flasks Pasteur pipettes 8/29/2015Property of CTE Joint Venture

Predict PROPERTY OF PIMA COUNTY JTED, Why would you not want to use a bucket to measure a cup of water? Be prepared to share 8/29/2015Property of CTE Joint Venture

Graduate cylinder Description: a narrow cylinder shaped piece of equipment with incremental measurements. Types: 10ml, 25ml 50ml, 250ml, 500ml, 1000ml Used to: measure used to measure in the range of ml 8/29/2015Property of CTE Joint Venture 7yoy.8o4.zirveiletisim.net - image source-

Volumetric Flask Description: Have a round base and narrow neck. Calibrated with more accuracy than a graduated cylinder Types: 100ml, 250ml, 500ml, 1000ml Used to: measure a set Volume very accurately 8/29/2015Property of CTE Joint Venture image source

Measuring Pipettes Description: long narrow glass pipette. Incremental measurements Common Types:1ml, 10ml, 25 ml Used to: measure volumes between 1-25 ml 8/29/2015Property of CTE Joint Venture Page:

Beakers Description: Types: Used to: 8/29/2015Property of CTE Joint Venture image source

Erlenmeyer Flask Description: Glassware with a cone base shape and a narrow opening Common Types: 25ml, 50ml, 100ml, 250ml, 1000ml Used to: Not as accurate at the graduated cylinders and volumetric flasks. These should not be used when accurate measurements are needed 8/29/2015Property of CTE Joint Venture image sourcehttp://qwickstep.com/search/buy-erlenmeyer-flask.html-

Pasteur Pipette Description: Similar to an eye dropper Common Types: glass, disposable. 1ml, 0.5 ml, 2ml, 3ml Used to: Transfer small volumes of liquid. They are used to dispense liquid, but not to measure exact volumes. 8/29/2015Property of CTE Joint Venture ml ml

Equipment Log In each lab table there is a log of all equipment. If glassware breaks note the date of the incident in the appropriate column. 8/29/2015Property of CTE Joint Venture EquipmentDate of use Date of breakage 50ml beaker

Closure How would you summarize to a friend who was absent today what you learned about glassware today? 8/29/2015Property of CTE Joint Venture