Reagecon Knowledge Base
Articles, Catalogues and Technical Papers on Chemical and Physical Standards
This page includes an archive of articles, technical papers and catalogues. These papers are intended to assist customers, distributors and researchers in the fields of testing and industry standards. The papers, articles and catalogues can be viewed on the site or downloaded. If any information is used from these papers in other articles, attribution and a link back to the original article on this site is required.
Refractive Index and Brix Standards
This short video provides viewers with an overview and short summary on Refractive Index and Brix Standards.
Firstly, to either identify or confirm the identity of a sample by comparing its refractive index to known values. Such known values can be derived experimentally, taken from the technical or scientific literature, or obtained from the manufacturer of the liquid. Secondly, Refractive index may be used to assess the purity of a sample by comparing the refractive index of the sample to the known value for the pure substance. Thirdly, Refractive index can be expressed in BRIX values for the measurement of the sugar content of sugar rich samples such as jams, jellies, syrups and fruit juices. The BRIX value correlates to the sugar concentration in the sample measured and is expressed as the number of grams of sucrose in 100 grams of sucrose/water solution. The relationship between the refractive index and BRIX is determined by the International Commission for Uniform Methods of Sugar Analysis (ICUMSA).
Spectrophotometry Standards
This short video provides viewers with an overview and short summary of Reagecon’s Spectrophotometry Standards offering.
A spectrophotometer, as an analytical tool is used in almost every type of chemical, biological or life science laboratory. Like all instrumentation they require regular checking and validation to a greater or lesser extent.
The parameters tested for spectrophotometers are photometric accuracy also called (absorbance linearity), wavelength accuracy, bandwidth and stray light. These checks and validation protocols, ensure confidence in all operational and performance matters and are also mandated in many cases by accreditation and regulatory bodies.
Spectrophotometry Standards
Spectrophotometry Standards, we hold a unique position in terms range, breadth and depth of offering. The product range includes: Linearity Standards, Wavelength Standards, Stray Light Standards, Bandwidth Standards and Resolution Standards
Spectrophotometry Standards
A spectrophotometer, as an analytical tool is used in almost every type of chemical, biological or life science laboratory. The instrument may range in complexity from a simple single beam instrument, right through to dual beam or complex and sometimes highly...
Stable Low Level Conductivity Standards
Abstract Many scientists are concerned about the virtual non-existence of low-level conductivity standards. Where such standards have been reported, independent studies have shown them to be unstable, nonmatrix compatible or not reaching the low conductivity levels...
Standards – A Reagecon Guide
Introduction One of the key factors affecting laboratories’ capabilities to produce reliable test data is the availability of standard materials with property values that can be relied upon by their users. The quality of a result is dependent on the quality of...
Sucrose in Water Standards (Brix) ISO 17034
Reagecon manufacture a range of Sucrose in Water (Brix) Certified Reference Materials (CRMs), which are manufactured and certified in accordance with the requirements of ISO 17034. These products are used primarily either as a Calibrant or Analytical Control Solution in Refractive Index based methods of Brix value determinations
The Application of Good Laboratory Practice in the Selection and Use of Accurate, Traceable Conductivity Standards
All analytical measurements, including conductivity measurements, must be of suitable accuracy and must be proven correct if they are to be fit for purpose. This paper, The Application of Good Laboratory Practice in the Selection and Use of Accurate, Traceable...
The Effect of Temperature on Conductivity Measurement
Abstract The conductivity of all solutions changes as the solutions’ temperature changes. It is a fundamental, practical requirement in the field of conductivity measurement that test measurements taken at different temperatures can be compared. This comparison can be...
The Effects of Temperature on pH Measurement
Some of the effects of temperature on pH measurement have been described or alluded to in both instrument manufacturers instructions and independent scientific literature. Some of these have been presented in a very theoretical manner and thus have been of limited practical value, others have been described adequately from a practical perspective. However a comprehensive classification of the principal effects of temperature on pH with practical remedial actions to correct, reduce or eliminate these errors has never previously been reported. This paper presents for the first time a clear classification of the practical effects of temperature on pH. It provides a definite set of guidelines on how the different errors can be reduced or eliminated thus giving the user greater confidence in the result of their pH measurements.
© Copyright 2022 Reagecon Diagnostics Ltd. All rights reserved.