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?
...
Turbidity is a measure of the cloudiness of water and is used as a key water quality indicator. This can then be used to quantify the amount of particles disrupting light passing through a liquid. For example, muddy water has a lot of small soil particles. This disrupts light going through it and makes it very cloudy and turbid. However spring water tends not to have many particles in and so is...
What is Suspended Solids?
[caption id="attachment_2055" align="alignleft" width="313"] Suspended solids[/caption]
Suspended solids refers to small solid particles which remain in suspension in water. It is used as one indicator of water quality, typically for wastewater applications and is used as part of the Charging system for trade effluent in the UK using the Mogden formula.
It is ...
The DR1900 by Hach is a portable spectrophotometer with over 220 pre-programmed test methods, accepting the Hach and the Lange chemistry. It is rugged and has a large, clear screen, with easy to use navigation, making it great for use in the field. [caption id="attachment_15657" align="aligncenter" width="300"] The DR1900 portable spectrophotometer[/caption] The DR1900 will accept the followi...
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...
The DR900 by Hach is a robust, portable colorimeter, capable of performing many dozens of different tests, supporting the Hach chemistry type. It can accept a number of different sizes cuvettes/samples cells – 1 inch round sample cells 1cm sample cells 16mm COD/TNT vials [caption id="attachment_15641" align="aligncenter" width="300"] Hach DR900 colorimeter[/caption] Every Hach method c...
The DR300 by Hach is a robust, portable single parameter colorimeter. It is the follow on from the Pocket colorimeter II which has been discontinued for most parameters - offering improved waterproofing, a large display and ergonomic design combined with optional Bluetooth and system integration. This unit is available in two formats – a single wavelength (either 500, 528, 600, 655nm) or pre-pr...
Palintest have announced that the ChloroSense, ChlordioXense, ChlordioX Plus, ChloroSense HR and PAASense units have been discontinued and have been replaced by the Kemio. The Kemio is a multi-parameter next generation instrument capable of measuring chlorine (free and total), chlorine dioxide, chlorite and peracetic acid (PAA) in water. You can read our post on the feature of the Kemio here.Â
...
[caption id="attachment_2586" align="aligncenter" width="285"] Jenway 370 pH meter[/caption]
Â
Many pH meters also have a separate reading range which gives results in mV. This can be used for a range of applications.
1.) Checking your pH electrode calibration. Most meters automate the calibration of pH which makes it simple to perform and ensures consistency in results. However, when issues ar...
Turbidity meters are used to quickly measure the turbidity (or cloudiness) of water, caused by suspended solid particles.
Understanding how turbidity meters work can help in achieving more accurate results and ensuring the samples and meter are handled correctly.
[caption id="attachment_8711" align="aligncenter" width="443"] Turbidity standards, used in calibrating turbidity meters[/capti...
A.Trying to pick out the correct test can prove to be a challenge. There are a number of different tests available from Hach to test for Iron and you will need to select the most appropriate test for the specific form of iron you are testing for. Iron can be present in natural and treated water. The presence of excess iron can have negative impacts for instance insoluble deposits (rust) can ...
Macherey-Nagel have a selection of VISOCOLOR Powder Pillows available for free Chlorine, total Chlorine and pH photometric determination. [caption id="attachment_13713" align="aligncenter" width="224"] Free Chlorine VISOCOLOR Powder Pillows[/caption] The benefits of VISOCOLOR Powder Pillow includes: Long shelf life- 5 years from production Easy dosing- all reagents in just one powde...
Thanks for sharing such a great information.. It really helpful to me.. I always search to read the quality content and finally i found this in you post. keep it up!
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...
