Different types of Centrifuge

(Choose the possible correct answers)

A process of pouring a liquid gently so as to not disturb a solid in the bottom of the container.

• A physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass.

• Can be used instead of centrifugation for the separation of solids from liquids

The liquid that passes through the filter paper is called

Species other than the analyte that affect the final measurement are called

A substances other than the analyte generate an instrumental readout similar to the analyte, such that the interference adds to the readout of the analyte

A purification technique for a solid, usually organic. The separation is based on the solid’s solubility in a liquid solvent

The key to the procedure is to use a maximum amount of solvent, such that the solid will just dissolve at the elevated temperature (usually the boiling point, if the solid is stable at that temperature).

A method of purification of liquids contaminated with either dissolved solids or miscible liquids

This method consist of boiling and evaporating the mixture recondensation of the vapors in a condenser

The separation is based on the fact that the contaminants have different boiling points than the liquid to be purified

The substances with lower boiling points are therefore separated from substances that have high boiling points

involves repeated evaporation–condensation steps before the distillate is actually collected

Equipments that are used in simple distillation

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A method in which the analyte is removed from the original solvent and subsequently dissolved in a different solvent (extracted) while most of the remainder of the sample remains unextracted, i.e., remains behind in the original solution.

Criteria for successful separation of analyte:

Two liquids be immiscible and the analyte be more soluble in the extracting solvent than the original solvent

A laboratory apparatus that is manufactured especially for solvent extraction

Venting step is then repeated several times such that the two liquids have plenty of opportunity for the intimate contact required for the analyte to pass into the extracting solvent to the maximum possible extent

This method is used when the analyte needs to be extracted from a solid material sample rather than a liquid

During decantation, matter that settles to the bottom of a liquid

Denoting the liquid lying above a solid residue after crystallization, precipitation, centrifugation, or other process.