Specialist supplier of scientific water analysis, beverage and laboratory test equipment

New Lovibond® Reflectance / Gloss Meters for Colour Testing

Written by Janice M on . Posted in Colour Measurement

Selectech is happy to announce that the Tintometer / Lovibond® colour product range has extended the colour range with the introduction of reflectance / gloss meters and Lighting / Colour matching cabinets. These reflectance meters / gloss meters allow for the quality control of opaque and translucent products i.e.: powders, liquids, gels, pastes, granules and …

Battling to really clean stuff in your business?
Find out more about Ultrasonic Cleaners

Written by Janice M on . Posted in Laboratory Equipment

Why use an Ultrasonic Cleaner? Some things are really difficult and time consuming to clean, such as machine parts with little nooks and crannies, delicate jewellery and murky laboratory glass cells. Ultrasonic cleaners use ultrasonic waves to agitate a fluid. The agitation creates bubbles and pressure that make the cleaning more effective. It finds it’s …

Does Colour Measurement Make You See Red . . . or Yellow?

Written by Janice M on . Posted in Colour Measurement

Explaining the science of colour in the elevator Normally, when colleagues at the Tintometer® Group initially explain what the company does, the typical response is a fairly blank look. This makes the standard ‘elevator pitch’ somewhat challenging, unless you want to ride up and down a few times. Yet when you begin to explain the importance …

Biofilms: ‘The Elephant In The QA Room’

Written by Janice M on . Posted in Hygiene & Quality Control

Dedicated biofilm detection and control should be enlisted and instilled as a fundamental and non-negotiable requirement for really effective QA programs, argues SA food safety consultant, Dr Robin Kirkpatrick.  As if the large basket of challenges to optimal quality assurance were not already daunting, there is another key one to consider: the proverbial ‘elephant in …

12 Seconds to Measure Avocado Ripeness

Written by Janice M on . Posted in Agriculture & Soil

The Felix Avocado Quality Meter has been upgraded to provide increased accuracy and reliability, so that avocado growers can more effectively estimate the ripeness of avocadoes through the electronic measurement of dry matter. Upgraded Technology: The technology behind the Avocado Quality Meter has been one of the biggest technology leaps in the scientific measurement of …

Measuring the Salinity of Water

Written by Janice M on . Posted in Technical Tips

Measuring the salinity or the dissolved salt content of water is important as aquatic organisms, livestock, and crops thrive at different salinity levels. Freshwater has a salinity value of less than 0.5 ppt while seawater has an average salinity of 35 ppt. Introduction Salinity is the measure of the amount of dissolved salts in water. …

Determination of pH in Non-aqueous Solutions

Written by Janice M on . Posted in Technical Tips

A simple extraction procedure using water is recommended for measuring the pH of non-aqueous solutions containing water-immiscible solvents. Water is added and mixed thoroughly with the sample. After reaching equilibrium, the solvent phase is separated and the pH of the water phase is then measured. Introduction 1. Solvents Liquids can serve as solvents to dissolve …

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