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Chromatography and classification of chromatographic methods?


Chromatography: Chromatography is a analytical technique that is widely used for separation, Isolation and identification compounds. Such as organic matter such as amino acids, starch, pigments for vitamins and plants, etc. This technique was introduce by M. Tswett. M. Twett was russian botanist. In 1906 he introduced this technique. He employed chromatrographic…

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Solvent extraction Principle and factors affecting on it?|chemistry funda


Solvent Extraction: Solvent Extraction is a separation method in which a solution (usually aqueous) comes into contact with a second solvent (usually organic) that is immiscible with the first to pass the solvent into the second solvent. This…

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Conductometry and application of conductometry|chemistry funda


Conductometry: Conductometry is define as the calculation of electrical conductivity of a solution. Conductance The current flow through the conductor is called conductance.In others words it is defined as the reciprocal of the resistance. The unit for the…

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General rules for Weighing in analytical chemistry|chemistry funda

general rules for weighing and apparatus

GENERAL RULES FOR WEIGHING Your instructor will explain the specific operation of your specific  balance.The main objectives are to protect all pans from dust and corrosion, avoid contamination or change in load (of sample or container), and avoid draft (air convection) errors.  Some general rules for the…

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Pipette,types and function of pipette in laboratory

pipets that use in laboratory

Pipette: The pipette are used to transfer a particular volume of solution. As such, it is often used to deliver a certain fraction (aliquot) of a solution. To ascertain the fraction ,the original volume of solution from which…

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Paper chromatography, types of paper chromatography|chemistry funda

simple and paper chromatography diagram by chemistryfunda

Paper Chromatography: Introduction: Chromatography (paper chromatography,Greek Chroma, color; Graphe, writing) is technique for the separation of mixture of solutes brought about by the dynamic partition or, distribution of dissolved or dispersed materials between Two immiscible phases, one of which goes beyond the other. As the name suggests,…

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Monitoring,Measurement,Analysis & improvement as required by ISO 9001


Monitoring,Measurement, required by ISO 9001 ISO 9001 Quality Management System requires the organization to use factual information as a basis for decision making. This requirement is met by clause 9.1 monitoring, measuring, analyzing and evaluating in ISO 9001. Monitoring means observing the status of a system, process or activity.  Measurement is the…

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Least square methods,Assumption and interpretation of least squares results


LEAST SQUARE METHOD :              Least square method is defined as “a method of estimating value from a set of observations by minimizing the sum of the squares of the differences between the…

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Titration or Titrimetry and types of titration| chemistry funda

Titration -or-Titrimetry-apparatus-diagram

Titration  or Titrimetry:    Titration is also known as titrimetry. It is a popular laboratory method for quantitative chemical analysis to determine the unknown concentration of an identified analyte.   Since volume play a key role in It . A known concentration and volume of titrant react with a solution of analyte .The volume of titrate reacted…

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