Chapter 1 Flashcards
(27 cards)
Facilitated procedures to yield both accurate and precise results
Clinical chemistry
Suitable for laboratory and general use
Analytic grade
Most frequently used reagent in lab
Water
Water purified by ion exchange
Deionized water
Test methods requiring minimum interference
Reagent grade water type 1
Most testing, QC, and standard preps
Reagent water type 2
Glassware washing only
Reagent water type 3
Substance dissolved in a liquid; also called analytes
Solute
Contains an excess of undissolved solute particles even greater than a saturated solution
Supersaturated solution
Weak acids or bases and their related salts
Buffers
Represents the negative log of hydrogen ion concentration
pH
Most commonly used temperature measurement in laboratories
Celsius
Means the device will give the amount stated
TD (to deliver)
Has a continuous etched ring or two small, close, continuous rings located near the top of the pipet
Blowout Pipet
Contents drain by gravity and pipet has no etched ring on top
Self draining pipet
Has calibration marks to the top and is usually a blowout pipet
Serologic pipet
No calibration marks; usually used for transfer of liquids with no consideration of volume
Pasteur pipet
Has only one volume; cannot be adjusted
Fixed volume pipet
Has ability to deliver more than one volume but only one volume is used at a time
Variable volume pipet
Wide, long graduated pipet with a stopcock at one end (not used very much in labs)
Buret
Drying agent; used to keep reagents, test materials, and controls from absorbing moisture
Dessicant
Process of using centrifugal force to separate solids and liquids; three variables associated with it are mass, speed, radius
Centrifugation
Red color of plasma or serum due to RBCs being hemolyzed
Hemolysis
Increased bilirubin pigment
Icterus
