why is it advisable to use plasticwares instead of the conventional glasswares in spectrophotometry?
To understand why it is advisable to use plasticwares instead of conventional glasswares in spectrophotometry, we need to consider a few factors related to the properties of both materials.
1. Transparency: Plasticwares are often made from materials like polystyrene or polycarbonate, which have excellent transparency in the visible light range. They allow light to pass through without significant absorption or scattering, making them suitable for spectrophotometry. On the other hand, conventional glasswares may have impurities or coloration that can interfere with accurate measurement.
2. Absorption and Scattering: Glasswares, especially those made from colored or special types of glass, can absorb or scatter light to varying degrees. This can lead to inaccurate readings, especially at specific wavelengths. In contrast, plasticwares are generally designed to minimize light absorption and scattering, providing more reliable results.
3. Disposable and Low-cost: Plasticwares are often disposable, which reduces the risk of contamination between samples and saves time on cleaning and sterilization. They are also relatively low-cost compared to glasswares, making them more economical for routine spectrophotometry experiments.
However, it is important to note that certain applications or experiments may still require the use of glasswares, especially when dealing with harsh chemicals or extreme conditions that could damage plastic materials. It is advisable to consult the specific requirements of your experiment or consult with experts in the field to determine the most appropriate choice of materials for your spectrophotometry measurements.