INSTRUMENTATION

Used for heating and sterilization purposes Most commonly used High degree of thermal resistance, low alkali content

High resistance to alkali Thermal resistance less than borosilicates’

6 times stronger than borosilicate Special alumina-silicate glass that has been strengthened chemically than thermally

Can be heated to 900C Utilized for high thermal, drastic heat shock and extreme chemical treatment

Made up of soda-lime glass and a mixture of calcium, silicona dn sodium oxide Poor resistance to high temperature

Delivers the EXACT volume it holds into a container

Holds the particular volume but does not dispense the exact volume

Continuous etched rings on TOP of the pipet Exact volume is obtained when the last drop is blown out

Absence of etched rings Liquid allowed to drain by gravity

Nonviscous fluid Self-draining Small amount left in the tip should NOT be blown out Transfer pipet

Viscous Fluids with Etched ring Transfer Pipet

Transfer fluids without consideration of a specific volume Transfer pipet

WITH graduations to the tip Blowout pipet Graduated/ Measuring Pipet

WITHOUT graduations to the tip Calibrated between 2 marks Self-draining Graduated/ Measuring Pipet

Other Graduated or Measuring Pipet

Micropipettes (<1 mL) (TC Pipets)

Relies on piston for suction creation to draw sample into a disposable tip Piston does NOT come in contact with liquid

Operates by moving the piston in the pipet tip or barrel, much like a hypodermic syringe Not require a different tip for each use

Obtains liquid from a common reservoir and dispensed it repeatedly

Calibrating medium for TD pipets

Calibrating medium for TC pipets

Celaning solution for glassware

Require Calibration at regular intervals - calibration intervals should coincide with the requirements of the laboratory’s licensing and accrediting organizations

Thermometers for Freezers & Refrigerators