Oxygen Combustion Flask As Per Usp 500ml

An oxygen combustion flask, as per USP standards, is a specialized piece of laboratory glassware used for the combustion of organic materials, particularly for determining the presence and amount of halogens and sulfur. These flasks are typically made of borosilicate glass and feature a platinum basket (or sample carrier) for holding the sample during combustion. The platinum basket is crucial for its resistance to high temperatures and its ability to withstand the corrosive environment created during combustion. Here's a more detailed description:Key Components and Features:

• Borosilicate Glass Flask:The flask itself is typically made of borosilicate glass, known for its excellent thermal resistance and chemical durability.
• Standard Taper Joint:The flask has a standard taper joint (e.g., 40/45) to ensure a secure connection with other lab equipment, like a stopper.
• Platinum Basket (Sample Carrier):The platinum basket, usually with a purity of 99.9%, is designed to hold the sample. It is perforated to allow for proper oxygen flow during combustion and is attached to a stopper or a hook on the stopper.
• Sample Wrappers:Black paper sample wrappers, often die-cut from unsized paper, are used to wrap the sample. They efficiently absorb heat and facilitate infrared ignition.
• Stopper:The stopper, often with a ground glass joint, fits snugly into the flask and may have a platinum wire gauze attached to hold the sample carrier.
• Conical Shape:The flask is often conical in shape, with a deep bell-shaped flaring lip to enhance heat management and containment. 

Functionality:

1. 1. Sample Preparation:The sample is carefully weighed and wrapped in the black paper sample wrappers.
2. 2. Combustion:The wrapped sample is placed in the platinum basket, which is then suspended within the flask.
3. 3. Combustion Process:The flask is filled with oxygen, and the sample is ignited, typically using an infrared ignition source. The combustion process converts the organic material into soluble combustion products.
4. 4. Analysis:The resulting combustion products are then analyzed using appropriate analytical techniques (e.g., titration, gravimetric methods) to determine the concentration of halogens and sulfur.
5. 5. Contamination-Free:The use of a platinum basket and proper technique helps ensure that the analysis is free from metallic impurities. 

Applications:Oxygen combustion flasks are essential tools in analytical chemistry, particularly for: 

• Determining halogen and sulfur content in organic materials:This is critical in various industries, including pharmaceuticals, where purity and elemental composition are crucial.
• Quality control and research:They are used to assess the composition and purity of various organic compounds.
• Compliance with USP standards:The use of oxygen combustion flasks is often specified in pharmacopeial methods for analysis.