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Showing posts with label Hellma Cuvettes. Show all posts
Showing posts with label Hellma Cuvettes. Show all posts

Thursday, 10 May 2018

Get Quality Analytical Spectrophotometers for your lab needs


Spectrophotometers are the laboratory instruments used for detecting substances and measuring their amount in a given sample. They have wide range of applications in many fields of science. Spectrophotometers are available in different types and the systems are being upgraded making it easy to use in various fields with best outcomes. These are available from small basic spectrophotometers for teaching purpose in education institutes to advanced instruments used in analytical laboratories of research institutes. All the fields of research where spectrophotometers employed are related to materials, compounds such as medicines, minerals and bio molecules etc. All these are useful for mankind where accuracy in results should be maximum and this demands extensive research using advanced techniques and good lab practices. This is achieved by employing superior quality analytical instruments and lab equipment.

One can get good quality instruments by having prior knowledge about the brands related to product. We have Spectrophotometers for quantitative analysis of the substances where light passed through the sample substance is measured. Accuracy is must when choosing the best equipment as spectrophotometers has many components which are sensitive and made of glass or quartz. Hellma Cuvettes have been made of premium quality glass / quartz material with high calibration standards. Get the quality spectrophotometers from a retail manufacturer directly or from an authorized distributor.


Why from Distributor?
Most of the times buyers get good services and long lasting support from the distributors as they prefer to continue business with the company.  You will be offered with discounts on the whole which is one satisfying offer to the buyers. Distributors usually have large stocks of products so one can order in bulk or in limited volume. Even though they add value to the products but that will be not much as they are aware that dealers compare the value with manufacturer’s. Getting products from distributors is good to prefer and is wise when you have big orders and don’t have enough time.

Why from Manufacturer?
Branded products are always preferred for quality and it is good to use quality equipment. We have websites of all the companies these days to place orders directly from the manufacturers. But this must be done if you search well, compare all and make analysis or by having prior experience and not from the others feedback. There is no scope here to bargain nor get quick services regarding technical errors or defects.

Tuesday, 20 February 2018

Use Hellma Absorption Cuvettes for Obtaining Error Free Reading


Cuvettes are tube shaped containers and are having either circular or square cross section. They are designed to hold various types of samples required for experiments involving the measure of absorption of the given sample. The absorbance obtained using spectrophotometer instrument is also called optical density.


These cuvettes are used for general purpose of measuring absorbance of sample in colorimeters and UV-Visible Spectrophotometers. Absorbance is the amount of light absorbed by the sample. The absorbance depends on concentration of the particles in the sample and also the path length and molar absorptivity coefficients.


Since absorbance is dependent on the above mentioned factors, experiments should be conducted carefully so that there is no error caused by changing the path length i.e., by maintaining the same cuvette for each trial. Also lid is used to cover the cuvette so that atmospheric particles don’t mix with the sample and give error prone absorbance.

Cuvettes are manufactured in a variety of clear materials to support different wavelength range and path length requirements. The cuvette to be used will depend on the available range of wavelength and the sample volume. We use Hellma Cuvettes which are made up of both glass and quartz material. There are various types of glass cuvettes and the most important criterion for the choice of a particular type of glass is the spectral range for which that cuvette is intended. Glass cuvettes are used for measuring absorbance in visible region and quartz cuvettes is used both in the UV and visible region. The thermal expansion of quartz is extremely low and is chemically very resistant.

FirstSource Laboratory Solutions also provide Hellma Absorption cells for flow through measurements. Flow through cells allows the continual monitoring of optical parameters in processes such as reaction monitoring, tablet dissolution tests.

Advantages
  • Easier handling of hazardous substances
  • Individual adaptation to your substances
  • Pressure resistant
  • Graduated measurement results due to capture of bubble
  • Connection options for flow through cells


There are different types of absorption cuvettes viz., Ultra micro cells – with PE stopper; Cells for Magnetic stirrers – macro, semi-micro, with PTFE lid or stopper; Sealable cells – macro, semi micro for anaerobic applications; Cells with Tubes – macro; Cylindrical Cells – macro; Temperature controlled cells – macro; Demountable cells – cells with detachable windows.