20 Results for tag Chemistry

Measuring Melting Point

Measuring Melting Point The determination of a melting point of a sample is a standard laboratory procedure and is relatively straightforward. It is used to identify a sample, establish its purity, and determine the thermal stability of the sample. When measuring a melting point, you will generally find that it is recorded as a melting […] ... Read More

Purchasing Ethanol in Australia

Purchasing Ethanol in Australia Some grades of Ethanol are restricted in Australia under the concessional spirits scheme. In order to purchase these chemicals, you are required to meet certain criteria which may require you to obtain a permit. Why is ethanol restricted? The reason why ethanol is a restricted product is due to its alcohol […] ... Read More

A Guide to Choosing a Pipette Tip

There are an array of pipette tips available in the market and it can become difficult to select an appropriate tip for your application. Not only do you need to find a tip that fits your pipette, you also need to decide on the type of tip and the quality of the tip. We’ve compiled […] ... Read More

What You Need to Know Before Purchasing a Ducted Fume Hood

Ducted Fume Hoods are the traditional type of fume hoods and are fixed in position with a ducted system in place so that fumes are expelled up through the ducts and out of the building. As this type of fume hood also requires services such as ductwork, exhaust fans, and mechanical systems, you can see […] ... Read More

The Difference Between a Lab Oven and a Drying Oven

If you are ever in the market for an oven for your laboratory, you will likely come across standard lab ovens and drying ovens. It can be a common misconception that both these types of ovens are the same but they are actually two different pieces of equipment. Drying Oven A Drying oven is designed […] ... Read More

3 Things to Consider when Choosing a Centrifuge Tube

Centrifuge tubes range a lot in terms of quality and performance. There are multiple factors that contribute to the overall quality of the tube that we will discuss in this article. It’s important to take into account your own requirements of a tube and then choose a tube that is going to best suit these […] ... Read More

Dangerous Goods Storage in the Laboratory

Dangerous Goods Cabinets are a method of storing chemicals or substances that are classified as unsafe if improperly used. Dangerous goods can cause some serious health problems if used improperly. It is important that they are stored and used correctly to ensure a safe working environment is provided for everyone. AS 1940-2004 refers to The […] ... Read More

What is the difference between Conductivity (EC) and TDS?

We often see confusion arise when looking at the difference between conductivity (EC) and TDS. What is the difference? Can they be converted? Let’s explore the two in more detail. What is Electrical Conductivity (EC)? Under the SI (International Systems of Units), conductivity is referred to as ‘electric conductivity’ as an international standard term but […] ... Read More

What is the difference between Turbidity and TSS?

A common question that arises when studying the clarity or quality of water is what the difference between turbidity and total suspended solids (TSS). They both offer measurements on clarity but what does each test for? And is there any correlation between the two? What is Turbidity? When we refer to Turbidity, we are looking […] ... Read More

10 Tips to Improve Your Pipetting Technique

It is important to establish a proper pipetting technique as poor techniques can dramatically reduce the accuracy and performance of the pipettor. It is worth taking the time to fine tune your technique to ensure you are working as efficiently and effectively as possible. We have compiled a list of th e top 10 pipetting […] ... Read More

How Does Temperature Affect pH?

Temperature plays a significant role on pH measurements. As the temperature rises, molecular vibrations increase which results in the ability of water to ionise and form more  hydrogen ions. As a result, the pH will drop. The dissociation of water into hydrogen and hydroxide ion can be represented as: H2O (l) ⇌ H+ (aq) + […] ... Read More

Why use a non-bleeding pH test strip?

What exactly does it mean when we see non-bleeding test strips? Unlike common indicator papers, non-bleed is a patented technology whereby the test strips are chemically bound to the test pads. This safely prevents the dyes from bleeding into the sample which prevents contamination and allows you to continue with further analysis of the solution. […] ... Read More

Difference in Quantitative and Qualitative Filter Papers

Filtration is the mechanical-physical operation which is used for the separation of solids from fluids by interposing a porous media through which only the fluid can pass. Oversized solids in the fluid are retained on the surface as well as within the matrix of the filter media. Since filter paper is regarded as a depth […] ... Read More

How to Read a Meniscus in Chemistry

Liquids are difficult to measure with the naked eye due to surface tensions causing a meniscus to form on the circumference of the measuring object. In this article, you will learn what a meniscus is, why it forms and how you can accurately and precisely measure the volume of a liquid in laboratory graduated measuring […] ... Read More

A Puck-like Data-logging Device for STEM Learning has Maker Potential!

Billed as an all-in-one STEM lab, the handheld Labdisc Gensci by Globisens is a useful tool to measure and record data for a wide range of experiments. The device resembles a large hockey puck with an outer ring that rotates to expose a series of build-in sensors. External probes measure sound, air pressure, humidity, global […] ... Read More

Plastic Vs Steel Corrosive Cabinets

When you’re faced with the challenge of purchasing a corrosive cabinet, the first question likely to spring to mind is: Do I purchase a plastic or a metal cabinet? This decision can come down to some very simple factors so rest easy! We’ll assist you with your decision and provide you with some important considerations […] ... Read More

Choosing a Laboratory Rotary Evaporator

Understanding the basics of Rotary Evaporators before buying them Rotary evaporation is the process of reducing the volume of a solvent by distributing it as a thin film across the interior of a vessel at elevated temperature and reduced pressure which promotes the quick removal of excess solvent from less volatile samples. Rotary Evaporators are […] ... Read More

What is the Difference between Soda-lime Glass and Borosilicate Glass?

Borosilicate Glass Borosilicate glass is an “engineered “glass developed specifically for use in laboratories and applications where thermal, mechanical and chemical conditions are too harsh for standard, household-type soda lime glass. It is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are resistant to thermal shock more […] ... Read More

Silicone Vs Rubber

Silicone and rubber are both elastomers. Silicone is a polymer containing silicon together with carbon, hydrogen, and oxygen. Silicone and rubber can both be found in a wide variety of products, including automotive applications; cooking, baking, and food storage products; apparel such as undergarments, sportswear, and footwear; electronics; medical devices and implants; and in home repair […] ... Read More

8 Steps to Handling a laboratory Chemical Spill

Careful handling, storing and good laboratory practices in the use of laboratory chemicals will significantly reduce the occurrence of spills.  However, despite laboratory best practice, chemical spills are not uncommon.  Luckily, most chemical spills can be safely cleaned up by trained laboratory personnel.  When a chemical spill does occur, it is essential that you are […] ... Read More

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