Posts tagged 'science'

Horiba's LAQUA Range
Loading...
30 view(s)

Ground Water and Surface Water testing, a solution from Horiba's LAQUA Range

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 ...
QUICKFIT® Jointed Laboratory Glassware
Loading...
94 view(s)

QUICKFIT® Jointed Laboratory Glassware: Understanding the Different Types and when to use them

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...
How to choose a Memmert Climate Chamber?
Loading...
45 view(s)

How to choose a Memmert Climate Chamber?

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 are the Advantages of Sieving?
Loading...
72 view(s)

What are the Advantages of Sieving?

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...
How to Calibrate the Hach LDO Probes
Loading...
332 view(s)

How to Calibrate the Hach LDO Probes

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...
Laboratory Glassware
Loading...
1110 view(s)

A quick guide to Classifications of Laboratory Glassware

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...
How can I measure Turbidity?
Loading...
1712 view(s)

How can I measure Turbidity?

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 ...
Readability and accuracy of a balance
Loading...
798 view(s)

What is the difference between the readability and accuracy of a balance?

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...
Jenway 370 pH meter
Loading...
827 view(s)

What is the mV mode on my pH meter used for?

[caption id="attachment_2586" align="aligncenter" width="285"] Jenway 370 pH meter[/caption]   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...
Vacuum Filtration
Loading...
195 view(s)

What is the difference between gravity and vacuum filtration?

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...
Vacuum Filtration
Loading...
202 view(s)

What equipment do I need to perform a vacuum filtration?

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...
Digital Refractometer
Loading...
405 view(s)

Q. How do we identify which type of glycol we have in our HVAC system?

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...
Loading...