MLS PRACTICAL 2 Flashcards
Is a liquid used to dilute a solution.
Diluent
Define “Solute”
Is the solution component that is not the one presented at the largest amount.
Define “Solvent”
is the solution component that is presented at the largest amount
It is an amount that is taken from large quantities, especially a sample taken for analysis.
Aliquot
Define “Solution”
A homogenous mixture of two or more substances that do not chemically react with each other
What is a Dilution factor?
It is the value by which the concentration of a diluent is multiplied to give the concentration of the original solution
What are the formulas of the dilution factor?
DF = 1/DR
DF = final volume / sample volume
What is a Dilution ratio?
It is the ratio of the initial volume to the final volume, the ratio of the final concentration to the initial concentration
The formula of the dilution ratio is:
DR = 1/DF
DR = sample volume / final volume
Define “Simple Dilution”.
A dilution in which a volume of the liquid sample and the volume of the liquid diluent are mixed together.
What are the two types of lab results?
- Quantitative results
- Qualitative results
Define each type of lab result.
- Qualitative results: gives the presence or absence of certain compounds
- Quantitative results: gives the exact amount of the compound presented
Give the SI Unit of each:
a) Length
b) Weight/Mass
c) Volume
d) Temperature
a) Meters (m)
b) Kilograms (kg)
c) Liters (L)
d) Celsius (degree C)
List the SI Prefixes (Largest to smallest)
Tera- (10^12)
Giga- (10^9)
Mega- (10^6)
Kilo- (10^3)
Deci- (10^-1)
Centi- (10^-2)
Milli- (10^-3)
Micro- (10^-6)
Nano- (10^-9)
When is dilution done?
- when the solution is concentrated
- when the results are out of the range
- when titer needs to be determined in the patient’s sample
Serial dilution is:
when the dilution and done again and again
What does the simple dilution represent?
the ratio of the concentrated or stock material to the final volume of a solution
