Basic Principles Flashcards
Suitable for most analytical procedures
Contains impurities below levels established by the American Chemical Society
STANDARD, Used in the laboratory
Analytical Grade / Reagent Grade
Subjected to additional purification steps
Used in chromatography, AAS, Fluorometry, standardization that requires extremely pure chemical
Ultrapure Reagents
Chemicals used in manufacture of drugs
USP and NF Grade
Impurity limitations not stated. NOT RECOMMENDED FOR CLINICAL LAB USE
Chemical Pure
Mnemonics for Common Grades of Chemicals
“AUCUNT”
A - analytical Grade
U - Ultrapure
C - Chemical Grade
U - USP, NF
T - COMMERCIAL/TECHNICAL
Reagent water used for procedures that requires maximum water purity (preparation of standard solutions, tissue/cell culture methods)
Type I Reagent Water
Used for most laboratory determinations in Chem, Hema, Microbiology, Immunology, and others.
Type II Reagent Water
Used for most qualitative measurements and examinations
e.g. Parasitology and Histology
Also for WASHING OF GLASSWARES
Type III Reagent Water
Enumerate Classification according to calibration/Marks
To Deliver and To Contain
Pipet that delivers EXACT AMOUNT it holds into a container. Used for NON-VISCOUS SAMPLES. It also uses distilled water as a calibrating medium
To Deliver
Holds the particular volume but DOES NOT DISPENSE the exact volume. For VISCOUS samples. Uses mercury as a calibrating medium
To Contain
A type of TD that has continous ETCHED rings on top of pipet, exact volume obtained
Blowout
Type of TD with NO ETCHED RINGS, liquid is allowed to drain by gravity
Self-Draining
Calibration marks of Ostwald Folin
TD and TC
Calibration marks of Volumetric Pipet
TD
