Why quartz cuvette for uv

Tel: : sales advaluetech. Product Categories:. We look forward to help you with your cuvettes need! Standard lid and round bottom. Stock : FQ-CV Description: standard cuvette with lid. Outside Dim: 45 x Add to Cart. Description: standard cuvette with stopper. Screw cap to provide best spill prevention. However, glass absorbs strongly in UV region and its application is not recommended for wavelengths below nm.

Like glass transparent plastic cuvettes find application in absorbance measurements in visible region. The additional benefit is that such cuvettes are unbreakable but on the other hand they cannot be used in UV absorbance studies as well as with certain organic solvent compounds.

Quartz is expensive in comparison with glass and transparent plastics but has the additional benefit of covering both UV and visible regions right from nm. However, it is even more fragile than glass and the cuvettes need to be handled with greater care. Here are some of the factors based on which you can understand the difference between plastic cuvette vs.

Apart from these characteristics, there is another benefit of quartz, i. It has to be kept in mind as well while picking up a suitable cuvette. By now, it must be clear to you that all of the available types of cuvettes are great in some aspects. In order to choose one, the specific use and equipment have to be defined. For example, plastic may not be efficient for UV-range experiments, but it is a cost-effective alternative for all the visible light studies.

It is important to bear in mind that oxygen present in the atmosphere absorbs significantly below nm and nitrogen absorbance assumes significance below nm.

Absorbance measurements made below nm should be conducted with oxygen free nitrogen purging of sample compartment. However, for measurements below nm it is best to maintain vacuum in the sample chamber. A blank reference measurement provides highly reliable results but for the purpose cell pair with optically matched windows should be used to prevent any absorbance mismatches.

The analytical results you communicate can have far-reaching consequences and can form the basis for taking decision on safety of use of commercial products, foods…. I have been a part of an accredited laboratory for 10 years now and have successfully faced more than 12 audits based on the ISO….

You need to be highly knowledgeable and willing to learn to be eligible for…. Selecting laboratory ware can become a task in itself, especially when you are not aware of different available alternatives. One of the major confusions people…. Part 1 — Microscopy Microbiology deals with the study of microorganisms that cannot be seen distinctly with the unaided eye.

Observation of microorganisms is an…. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. A pyrex cuvette is super easy to modify and make attachments to. Quartz cuvettes can be modified but is a much bigger process.

Physical characteristics of cuvette: High mechanical strength, strong adaptability to temperature changes, very strong bonding part, pressure resistance to several atmospheric pressures. Use high-quality quartz glass and optical glass to ensure no bubbles and no stripes. Common cuvettes are divided into quartz and glass.

Only nm in the ultraviolet region can be used with quartz cuvettes. A glass cuvette or a quartz cuvette can be used in the visible light region of nm. Double-beam UV can only be used in the sample cell. The cuvettes should be paired and used.