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

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 …

How to Clean Laboratory Glass Cells / Cuvettes so that they Last Longer

Written by Janice M on . Posted in Colour Measurement, Technical Tips

If you would like to achieve accurate and repeatable measurement results from colorimeters, photometers or spectrophotometers, it is vital to make sure that the glass cells (also known as cuvettes) are well cleaned, because fingerprints and dirt can lead to large errors. Precision glass cells are also expensive because they are especially made with a …

How to Choose and Care for the Right Electrical Conductivity (EC) Meter

Written by Janice M on . Posted in Technical Tips

Just as there are different types of cars for different situations, there are different meters / testers available to suit different water testing situations and budgets. EC meters are generally available in five types: 1. Small, economical pen-type meters that are well suited to applications such as aquaculture, education and environmental testing A Lovibond® pen-type …

How to Safely Reuse Frying Oil (and keep your customers happy)

Written by Janice M on . Posted in Food & Beverage, Technical Tips

Fried foods are definitely one of the most popular items on the South African food service menu. Unfortunately, the frying oil is often so old / overheated that it has become degraded and dangerous to health, according to research conducted by the Dept of Health. Dangers of using old, degraded Frying Oil: Poor quality product …

How NOT to Corrode a Boiler

Written by Janice M on . Posted in Technical Tips

A boiler is a closed container in which water under pressure is transformed into through the application of heat. This steam is then used to provide energy for heating and processes in a factory. The combination of water, heat and a mix of various substances in the water can create a corrosive and potentially explosive …

The Use of Starch in Paper and Adhesive Manufacturing

Written by Janice M on . Posted in Technical Tips

Application Notes: 1. The Use of Starch Starch is widely used in paper manufacturing for applications such as bonding, surface coatings and cardboard adhesives. During production and quality control, the concentration of starch is commonly measured, usually with a refractometer, such as the Pal Refractometer.   Hand-held Pal Refractometer Another factor which paper manufacturers are starting to …

Not all DPD 1 Tablets are the same

Written by Janice M on . Posted in Technical Tips

Lovibond® DPD reagents from the Tintometer® Group were developed in accordance with the EN ISO 7393-2 standard and are in perfect accord with its requirements. From the early stages of selecting raw materials through extensive quality control steps and during the production process, we ensure that Lovibond reagents meet the highest requirements possible. When used …

7 Safety Procedures to Follow to Prevent your Centrifuge from flying off the Handle

Written by Janice M on . Posted in Laboratory Equipment, Technical Tips

You do not want broken glass flying at high speed around in your centrifuge or around your laboratory (yes, it does happen. See Centrifuge Explosions), so it is very important to implement safety procedures for centrifuges. Train Each person should understand how to select, load, balance and clean the rotor, sample tubes and centrifuge. These …


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