What is the difference between standard and Mercury Free COD vials? Can I switch to Mercury Free vials?
COD tests are vital in many industries for the monitoring of effluent and discharge consent. The most common test method…
Tag: drinking water analysis
How do I measure suspended solids? How is the gravimetric method different to other methods?
The measurement of Suspended Solids is often required for discharge consent, and values may be reported to the Environment Agency…
Buy Smarter – what questions should you ask when buying a Spectrophotometer?
Spectrophotometers are relied on by a wide range of laboratories, for tests ranging from specific parameters, like chlorine or metals concentrations,…
How can I measure temporary and permanent water hardness?
Hard water is water with high levels of dissolved minerals, and usually occurs in areas where limestone and chalk are common….
What is TDS?
Answer: Total Dissolved Solids (TDS) is a measure of the combined content of all the inorganic and organic substances such as…
Application of chemical oxygen demand to drinking water
Application study: The use of photoelectrochemical chemical oxygen demand to study drinking water Abstract: “This study investigated the use of a…
Why is Chemical Oxygen Demand (COD) a useful parameter for drinking water analysis?
Ask the Expert: COD Analysis for Drinking Water Question: Why is Chemical Oxygen Demand (COD) a useful parameter for drinking water…
Automated water analysis: Conductivity, pH and Alkalinity from a 15mL Tube
Automated water analysis: Conductivity, pH and Alkalinity from a 15mL Tube Sample size is often critical in automation, you may…
Why is alkalinity an important parameter in environmental water analysis?
Why is alkalinity an important parameter in environmental water analysis? Its not just pH Answer:
Hach Dr2800 water testing spectrophotometer now obsolete.
With the launch of the new Hach DR1900 portable spectrophotometer Hach have discontinued their popular Dr2800 spectrophotometer. We have created…
What are the key steps in measuring pH? Why do I need to calibrate?
pH is a useful parameter which is used across all industries for quality control, environmental monitoring, lab work and much…
What’s the difference between free and total chlorine?
Most methods of measuring chlorine in water refer to free and total chlorine, but what exactly do these mean and…