Testing of ground and surface water is a key part of routine testing for water companies. Depending on the need, a number of different parameters are often assessed. The Horiba LAQUA range has a meter specifically designed for this type of analysis.
The U-50 series of multi-parameter meters enables the simultaneous measurement and monitoring of up to 11 parameters with one ...
Glassware has become ubiquitous in laboratory experiments thanks to its many favourable qualities.
It is inert, transparent, is chemically and heat-resistant, and available in a wide variety of shapes and sizes. From round-bottom flasks and fractionating columns to condensers, bubblers and extractors, laboratory glassware serves many functions.
Thi...
A climate chamber (also known as a test chamber, humidity chamber and environmental chamber) is used to simulate a range of environmental conditions. They are widely used in lifespan and stability tests across multiple industry types including pharmaceutical, cosmetics and aeronautical engineering. Memmert offer a comprehensive range of climate chambers, with different test parameters such as ...
What is a Test Sieve
A test sieve is an instrument that is used for the measurement of particle size. In its most common form, it consists of a woven wire screen, with square apertures, rigidly mounted in a shallow cylindrical metal frame. For coarse sieving, a perforated plate screen with square or round holes may be used in place of wire mesh. Square hole perforated plate sieves range d...
Let us first look at the probe. The Hach dissolved oxygen probes are equipped with a measuring LED that emits a pulse of blue light and a photodiode as a light detector. The probes are also equipped with a sensitive luminescent coated spot that is exposed to the sample.
The measuring LED emits a pulse of blue light which irradiates the back of the oxygen-sensitive spot. The coating mate...
Volumetric Glassware
Laboratory glassware can be manufactured from Borosilicate and Soda-lime glass. Soda lime glass  is generally used for Class B products or where long term exposure to chemicals is unlikely.
Class A Borosilicate volumetric glassware has superior thermal and chemical resistance and is better suited to glassware for storage of solutions, e.g. flasks.
The use of  Class A boros...
Turbidity measures the cloudiness/haziness of a fluid. It is a key test for water quality, turbidity is caused by particles of varying size scattering/absorbing the light and creating a cloudy appearance. The turbidity of a sample will increase with the amount of undissolved solids present.
Turbidity Tubes and Secchi Disks
The simplest and lowest cost way to measure the turbidity of a sample ...
There are many options out there when it comes to laboratory balances. Other than the maximum capacity, one of the main differences you may have seen between balances is their readability. The term readability is often used interchangeably with terms like repeatability (precision) and accuracy. However, they each have different definitions that are important when trying to understand the differ...
[caption id="attachment_2586" align="aligncenter" width="285"] Jenway 370 pH meter[/caption]
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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...
There are two types of filtration which are commonly used in the laboratory and it is important to select the correct type for the work you are doing.
But what is the difference between gravity and vacuum filtration?
How do you choose what type of filtration you need to do?
And what equipment do you need for each type?
Vacuum Filtration - also known as Buchner filtration - for when you nee...
Filtration under vacuum, also known as Büchner filtration, is commonly used to isolate the solid precipitate from a solution.
This technique is used in syntheses, for example when a reaction has yielded a solid, or in analyses including gravimetric analysis of suspended solids.
Although performing the filtration is simple, several pieces of equipment are needed which must all fit together, so...
A. Yes it is possible to differentiate between ethylene glycol and propylene glycol using both refractive index and specific gravity.
You will need:
Digital refractometer for glycol, hydrometer 1.000-1.500 with subdivisons 0.005, hydrometer jar 300x50mm
[caption id="attachment_12965" align="alignleft" width="321"] Digital refractometer for glycol[/caption]
The key to differentiate the tw...
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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...
