Turbidity is a measurement of suspended particles in water that scatter or absorb light. For example, the more suspended solids there are, the murkier the water will appear and the higher the turbidity is. Turbidity will also depend on the size of the particles, as this will affect the scattering or absorption of light.
Lovibond turbidity standards for TB 350 IR
Why measure turbidity?
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What is SDI?
Silt Density Index (SDI) is a measure to assess the fouling in water purification systems from Suspended solids and colloidal materials. When it comes to reverse osmosis membranes, suspended solids within the water can cause problems. Then these levels get high, it can cause fouling of the membrane. This will lead to:
Increased cost for maintenance
Reduced lifetime
In...
DPD tablets (diethyl-p-phenylenediamine) are used to determine chlorine in water and can also be used to test bromine, iodine and other disinfectants. These tablets come in four different types and are used alone or in combination, depending on your measurement parameter. The convenience of using a rapid version is that it dissolves quickly but is used as a visual test only.
Image of DPD ta...
Lovibond has two variations in its range of portable waterproof handheld meters. These electrochemical measuring instruments are designed for safety, mobility, and ease of data retention and storage.
The data loggers regularly save the collected measurement data which can be transferred to the computer via USB interface (serial or analogue).
With the SD 305/315/325 series, the instrument is ...
Lovibond have been providing kits for water analysis or colour measurement for more than 130 years. Their core focus is pool, environmental and industrial water analytics along with transmission and reflection colour measurement. Their emphasis is on easy to use equipment through rapid visual tests, photometers and spectrophotometers.
Colourimetric testing is a widely used method. In water tes...
The XD 7000 (VIS) and XD7500 (UV-VIS) are state of the art water testing spectrophotometers, manufactured by Lovibond. Featuring a wide array of features, combined with an excellent price/performance ratio.
[caption id="attachment_15695" align="aligncenter" width="300"] XD 7000/7500 is supplied with 4 x round cuvettes and zero cuvette (24mm), 1 x zero cuvette (16mm) and other accessories neede...
Silt Density Index (SDI) is a test used to determine the levels of colloidal and particulate suspended solids in the feedwater to reverse osmosis (RO) systems. This in turn will enable you to estimate the fouling potential. This measurement is of importance as it can be used to predict the lifetime of the RO membrane. This can help save time and money. It is measured following the test...
Measuring high levels of free chlorine can be problematic; Colorimeters used to test free chlorine are based on a colour change test; The DPD 1 (N,N-diethyl-p-phenylenediamine) method for residual chlorine was first introduced by Palin in 1957. Over the years it has become the most widely used method for determining free chlorine in water and wastewater. Hach introduced its first Chlorine te...
The SD 400 Oxi L is Oxygen meter which allows the measurement of dissolved oxygen (DO) at a high level. This is done thanks to the optical technology of luminescence. It uses an Optical DO probe which has distinct advantages: Low maintenance Easy calibration Fast response High accuracy The applications for this meter include: Waste Water Water Treatment Marine Water Surf...
The Lovibond PFX range will no longer have spare parts manufactured and provided.
The Lovibond PFX range ceased manufacture in 2010, when the new PFXi series was introduced.
[caption id="attachment_13599" align="aligncenter" width="300"] PFXi colourimeter[/caption]
As the PFX has been discontinued for so long, spare parts are no longer being manufactured for this model.
However, the...
Lovibond have enhanced the firmware for the EComparator Series- An instrument designed for the colour measurement of water. The latest version is V2.22 and is now available to download from the Lovibond® FTP server. This latest update incorporates: 1/ Enhanced capabilities in the ‘Projects...
Phosphate tests are often stated as reporting Orthophosphate or Total Phosphorous, but can also give other parameters like Acid Hydrolyzable Phosphates.
We've taken a look at the definitions behind these terms, so you can tell which Phosphorous or Phosphate test to use.
What are Phosphates and Phosphorous?
The element Phosphorous, P, exists in water courses in a wide range of forms...
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I came across your article about "DPD Tablets" on Camlab Info, and it's a valuable resource for anyone seeking information about water testing and analysis using DPD tablets. Your explanation of their usage and significance in water quality monitoring is quite informative.
This article on nanocolor tube tests is a gem for analytical enthusiasts. The idea of zero calibration is intriguing, and your detailed explanation makes it accessible. The step-by-step process helps demystify the technique for beginners like me. The use cases you've highlighted, particularly in...
Grant have introduced the new Controlled Rate Freeze Thaw (CRFT), which is a liquid nitrogen and cryogen free controlled rate freeze and thaw system for cryopreservation in a wide range of applications. Cryopreservation is a process where biological materials such as cells, tissues...
A dipslide is a means of testing the microbial content of liquids. This is a common method of monitoring and measuring microbial activity within many systems and commonly cooling systems. Usually the use of a dipslide is the first line of defence for the testing of microbial issues that could be...
Purchasing items using donated funds without the burden of VAT will now save many Millions of pounds each year which can be put to better use in advancing scientific knowledge to provide new treatments and cures that will shape the medicines of the future.
Working with pressure/vacuum conditions in the lab is common but not all products are designed to withstand this. Products with appropriate geometry and wall thickness are suitable for working safely with pressure. For example, filtering flasks, desiccators, or flat flange vessels, as well as...
