Clinical Laboratory Supplies
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The predominant practice of celcius on centigrade uses
celcius, farenheit, kelvin
reactions that are temperature dependent use some type of:
heating/cooling cell, heating /cooling block, water/icebath
kinds of thermometers
liquid-in-glass thermometers, electronic thermometer, digital thermometer
another SRM, has a known melting point and can also be used for thermometer verification
Gallium
has increased and is now routinely incorporated in many devices
electronic thermometer
the advantage of thermistor over the more traditional liquid-in-glass thermometers are?
size and millisecond response time
Glasswares used in clinical laboratory usually fall into one of the following categories
Kimax/Pyrex (borosilicate) Corex (aluminosilicate) high silica vycor (acid and alkali resistant) low actinic (amber colored) flint (soda lime)
the major types of resins frequently used in the clinical chemistry laboratory
polystyrene, polyethylene, polypropylene, tygon, teflon, polycarbonate, and polyvinyl chloride
is calibrated to hold one exact volume of liquid
volumetric flask
are designed to hold different volumes rather than one exact amount
erlenmeyer flask and griffins beakers
are glass or plastic utensils used to transfer liquids, they may be reusable or disposable
Pipets
Design
to contain to deliver
drainage characteristics
blowout and self-draining
measuring or graduated
serologic mohr bacteriologic ball, kolmer or kahn micropipet
transfer
volumetric ostwald-folin pasteur pipets automatic macropipets or micopipets
has a continuous etched ring or two small, close, continuous rings located near top of the pipet
blowout pipet
user allows the contents of the pipet to drain by gravity
self-draining
does not have graduations on the tip
mohr pipet
has graduation marks to the tip and is generally a blowout pipet
serologic pipet
these pipets are designed to dispense volume without further subdivisions
transfer pipets
bulblike enlargement in the pipet stem easily distinguishes
ostwald-folin and volumetric subgroups
is design to dispense or transfer aqueous solutions and is always self draining
volumetric pipets
do not have calibration marks and are used to transfer solutions or biologic fluids without consideration of a specific volume
pasteur pipets
the most routinely used pipet in todays clinical chemistry laboratory
automatic pipet