Analytical Standards Guide

  This article teaches the basic definition and explanation of each performance characteristic. Typical analytical method parameters are specificity/ selectivity, the limit of the detection, limit of quantification, linearity & range, accuracy, precision, robustness/ ruggedness for analytical procedures. Specificity/ selectivity As per the ICH Q2 guideline, specificity is the ability to assist unequivocally the analyte in the presence of components that may be expected to be present. Typically, these might include impurities degradants matrix, etc.  As per the international union of pure and applied chemistry defined selectivity is the extent to which the method can be used to discover particular analytes in mixture or matrices without intervention from other components of similar behavior. Definition of the various document more or less agree with this interpretation. The international union of pure and applied chemistry recommended the term selectivity. While the ...

  Laboratory reagents have a multitude of functions when it comes to chemical reactions or processes. The purpose generally is to initiate a chemical reaction between the reactants while not being part of the formation of the product itself. Sometimes reagents are also used to determine if a certain product is produced, they can be of many forms and structures. Some types of reagents are pure substances and some are compounds or mixtures. They usually come in the form of inorganic chemicals and are sometimes made of organic molecular structures. Some reagents can be used for multiple kinds of reactions while others tend to be specific and serve their purpose for a certain reaction only. Following are types of lab reagents that are commonly used in laboratories. Hydrochloric Acid This acid is very corrosive and has many industrial purposes. It is commonly used to make PVC pipes and polyurethane . While in lower concentration this reagent is used in leather processing in hou...

  The drug reference standard is a standardized substance that's utilized in the pharmaceutical industry as a base of measurement for similar substances where the precise active substances of a new drug are unknown. A reference standard provides a calibrated level of biological effects to compare new preparations of the drug. Analytical drug reference solutions and patient education materials put the best available information into the hands of clinicians and patients. They simply analyze the information regarding dosage, efficacy, interactivity , and allergies, even suggesting alternate therapies as appropriate. Drug reference standards are highly characterized physical specimens used in analytical testing by pharmaceutical and related industries to help ensure the identity strength, quality, potency , and purity of medicines, drugs, biologics, and excipients dietary supplements and food ingredients. All chromatographic reference standards are supplied with a certificate of an...