Month: June 2022

Chemical DamageThere are relatively few compounds that damage stationary phases. Introducing nonvolatile compounds (e.g., salts) in a column often degrades performance, but damage to the stationary phase does not occur. These residues can often be removed and performance returned by solvent rinsing the column. Inorganic or mineral bases and acids are the primary compounds to …

WHAT ARE THE MAJOR CAUSES OF GC CAPILLARY COLUMN PERFORMANCE DEGRADATION? Part II Read More »

Capillary GC columns are capable of producing highly reproducible chromatograms provided right operational conditions are maintained and steps are taken from time to time to prevent damage and performance degradation. The factors which can result in deterioration are Column breakage Fused silica columns break wherever there is a weak point in the polymide coating. The …

WHAT ARE THE MAJOR CAUSES OF GC CAPILLARY COLUMN PERFORMANCE DEGRADATION? PART I Read More »

Introduction Laboratory accreditation is the employment of procedures and criteria specifically developed to determine technical competence of laboratories to carry out accurate and reliable services. It is the formal recognition, authorization and registration of a laboratory that has demonstrated its capability, competence and credibility to provide reliable testing, measurement, calibration services and all other technical …

LABORATORY ACCREDITATION AND CERTIFICATION Read More »

Calibration is a comparison between two devices, where one device is the instrument that requires calibration and the other is the reference sandard that defines the accuracy. How often should you calibrate? Every instrument has different calibration frequency requirements and must be done at an accredited laboratory You should start by following the calibration interval …

Is Regular Calibrations Necessary? Read More »