clinostat clock type
Original price was: $400.00.$350.00Current price is: $350.00.
A combustion tube is a laboratory glassware used primarily in organic chemistry for conducting combustion reactions. It’s a straight, narrow tube made of heat-resistant glass, usually borosilicate glass, with one end sealed.
Here’s how it typically works:
- Preparation: The sample to be combusted is usually placed inside the combustion tube. This sample is often an organic compound or a mixture of compounds.
- Sealing: After loading the sample, the open end of the tube is sealed, often using a stopper or a glass rod. This ensures that the combustion reaction takes place within a closed system.
- Combustion: The sealed tube is then placed in a combustion furnace, which raises the temperature to a level where combustion of the sample occurs. This typically involves heating the sample in the presence of excess oxygen.
- Collection of Products: As the sample combusts, it reacts with oxygen to produce carbon dioxide and water vapor, along with other possible products depending on the composition of the sample. These products are collected and can be analyzed using various techniques such as gas chromatography.
- Analysis: The collected products can provide valuable information about the composition of the original sample. For example, the amount of carbon dioxide produced can be used to determine the carbon content of the sample, which is useful in determining its molecular formula or identifying functional groups present in organic molecules.
Uses of Combustion tube
Elemental Analysis:
Combustion tubes are commonly used to determine the elemental composition of organic compounds. By combusting a sample in the presence of excess oxygen, the carbon and hydrogen in the sample are converted to carbon dioxide and water vapor, respectively. The amounts of carbon dioxide and water produced can then be measured, allowing calculation of the carbon and hydrogen content of the sample. This information is crucial for determining the empirical formula of the compound.
Identification of Functional Groups:
The combustion of organic compounds in a combustion tube can provide information about the functional groups present in the molecule. For example, the presence of nitrogen-containing functional groups (such as amines or amides) can be detected by analyzing the nitrogen-containing combustion products (such as nitrogen oxides). Similarly, sulfur-containing functional groups can be detected by analyzing sulfur dioxide produced during combustion.
Calorimetry:
Combustion tubes are also used in calorimetry experiments to measure the heat released during combustion reactions. By knowing the heat released and the mass of the sample, it’s possible to calculate the heat of combustion per unit mass, which can provide valuable information about the energy content of the compound.
Isotope Ratio Mass Spectrometry (IRMS):
In some cases, combustion tubes are used as part of sample preparation for isotope ratio mass spectrometry. By combusting samples containing isotopically labeled atoms (such as carbon-13 or nitrogen-15), researchers can analyze the isotopic composition of organic compounds, which can be useful in fields such as environmental science, geochemistry, and food authenticity testing.
Quantitative Analysis:
Combustion tubes can be used for quantitative analysis of organic compounds. By carefully controlling the conditions of combustion and analyzing the products, it’s possible to determine the concentration or mass of specific components in a sample.
6 reviews for clinostat clock type
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Kila –
The combustion tube is of good quality and durable.
Dama –
Wow! This apparatus exceeded my expectations. It’s well-designed and makes my experiments a breeze.
Tiff –
The combustion tube I purchased has exceeded my expectations in every way. It’s durable, heats evenly, and is perfect for my lab experiments. Highly recommend!
Lesley –
I appreciate the quality and construction of combustion tubes.
Richard Vak –
Seamless ordering
Ruth. k –
Indeed worth every penny