PRELIMS WEEK 2 Flashcards
• Has the highest grade for accuracy (for qualitative and
quantitative
analytical reagent
• Has undergone additional purification steps, more purified
and sensitive than (AR)
• Ideal for delicate and intricate tests (Molecular tests,
Immunoassays, chromatography, atomic absorption spectrophotometry
ultrapure reagent
• Also known as pure grade
• Most chemically pure chemical, fails to reveal their tolerance,
limits of impurities because their purity is indicated by the manufacturer
• Not intended for research and analytical chemistry
CHEMICALLY PURE REAGENT
most frequently used reagent in the laboratory
water
• Water has been purified to remove almost all organic
materials
• Boiled and vaporized
distillation
Process that uses pressure to force water through a
semipermeable membrane
reverse osmosis
type III RGW is used in?
urinalysis or fecalysis
_____________ Glass
Used for test procedures needing heating or sterilization
borosilicate
Make use when you need excellent light transmission; used for cuvettes, for spectrophotometer
quartz glass/silica
High resistance to alkaline solution; not resistant in high temperatures
Boron-free/soft glass
Can be heated up to 900°C
vycor
Amber bottles; used for light sensitive (photosensitive) chemicals
low-actinic
Unique group of resins that are not affected by acid, alkaline solution. It can be autoclaved
polyolefins
Flexible at 30 °C and brittle at 45 °C. Can be steamed and autoclaved or sterilized using chemical reagents
tygon
Can resist extreme temperatures. -270 to 255 °C
teflon-fluorocarbon resin
Has the same chemical resistance as linear
polyethylene
polypropylene
This resin possesses excellent chemical
resistance to almost all chemicals used in the clinical laboratory
teflon
Very susceptible to damage by most chemicals.
It is resistant to water, aqueous salts, food, and inorganic acids for a long period of time
polycarbonate
blood clots can be cleaned by
10% sodium hydroxide
• Calibrated to hold one exact volume of liquid (TC)
• Has a round, lower portion with a flat bottom and a long, thin
neck with an etched calibration line
volumetric flask
___________ flask has a wide bottom that gradually evolves
into a smaller, short neck
Erlenmeyer
• Has a continuous etched ring or two small, close,
continuous rings located near the top of the pipet
blowout pipet
SELF DRAINING OR BLOWOUT
MOHR PIPET
SELF draining
SELF DRAINING OR BLOWOUT
SEROLOGIC PIPET
blowout pipet
a transfer pipet used with biologic fluids having a viscosity greater than that of water
Ostwald folin
• Designed to dispense or transfer aqueous solutions and
is always self-draining
• Has the greatest degree of accuracy and precision and
should be used when diluting standards, calibrators, or quality-control material
what type of transfer pipet?
volumetric pipet
Do not have calibration marks and are used to transfer
solutions or biologic fluids without consideration of a specific volume
pasteur
Most routinely used pipet in today’s clinical chemistry laboratory
automatic
Operates by moving the piston in the pipet tip or barrel,
much like a hypodermic syringe
positive displacement
primarily used to prevent moisture absorption by chemicals, gases, and instrument components
desiccants
Mechanical analytic balance is also known as
substitution balance
Used to check the speed of a centrifuge
tachometer or strobe light
Freeze drying
lyophilization
