Q: Lots of lab glassware states the type of glass it is made of - Pyrex, Borosilicate Glass or Soda Lime.
What is the difference between these types of glass?
[caption id="attachment_8821" align="aligncenter" width="430"] Lab glassware can be soda lime, borosilicate or Pyrex glass - what is the differences between these types?[/caption]
A: Different types of glass have different chemical...
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...
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...
WTW has developed an innovative reagent free system to measure COD, Nitrate and Nitrite without the need for vials.
The OptRF system is built in to some of their spectrophotometers, and provides calculation of the results based only on absorbances in the UV wavelength range.
However, this system is only applicable to some samples and should be evaluated before changing from traditional CO...
Q: I am looking to buy a pH electrode, many of them say "Na error over..." - what does this mean?
A: Sodium error is also known as alkaline error, and is a phenomenon that occurs at very high pH levels - usually pH 12 or over.
At very basic or alkaline pH levels, where Hydrogen ion concentration is relatively low compared to the Sodium ion concentration in the sample, you can see a Sodium...
Filtering water samples before ICP-MS or HPLC analysis for heavy metals testing is good practice - to help protect these delicate instruments from damage caused by larger particles.
However some filters can introduce interferences which may affect the results - so what type of filter is best for heavy metals analyses?
Why filter samples?
Samples taken in the field are often high in...
The W4000 Bibby Merit Water Still is a great option for labs needing small quantities of distilled water.
The still connects to a basic mains water supply and allows you to generate 4L per hour of distilled water compliant with European Pharmacopoeia and ASTM Type 4
[caption id="attachment_11833" align="alignleft" width="300"] A fully assembled W4000 Water Still[/caption]
The still arr...
Suspended solids tests are conducted as a water purity indicator, and to form part of discharge consent. The gravimetric method of suspended solids testing requires filter papers to be used, but these must be of the correct grade to ensure correct results.
We've taken a look at which filter paper grades are approved for suspended solids tests.
Which filter paper should I u...
The anti-static set for Burkle pumps is essential when decanting flammable liquids. Without a properly earthed system static charge can build up, which can result in fire or even explosion.
Connect the Burkle anti static set correctly following the instructions below
[caption id="attachment_10283" align="aligncenter" width="419"] The Burkle Anti-static Set for use with their liquid pumps[...
If you are looking for a pump to dispense liquid from a bottle or barrel, you may need to know the thread size of the container neck.
Sometimes this will be written on the inside of the cap, or given in the specifications of the product.
However if the thread size is unknown is it simple to work out by measuring it yourself, as explained below.
[caption id="attachment_11593" align="aligncent...
Q: Our turbidity meter comes supplied with a bottle of silicone oil. What is this for? Why is it important in the test?
[caption id="attachment_11631" align="aligncenter" width="163"] Silicone oil is often supplied with turbidity meters, but what is it used for, and why is it important to the test?[/caption]
A: The silicone oil is used to ensure the glass vial used in the turbidity me...
The Duran Group has extended their range of wide mouth laboratory bottles by introducing two new double walled or jacketed bottles for temperature control of samples and experiments.
[caption id="attachment_11619" align="aligncenter" width="253"] The new double walled GLS 80 bottles by The Duran Group[/caption]
These GLS 80 bottles incorporate a jacket which can be used to circulated ...
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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...
