跳至主要内容

Measurement of UV Transmittance

UV transmittance, UV transmission or UVT is a measurement of the amount of ultraviolet light (commonly at 254 nm due to its germicidal effect) that passes through a water sample compared to the amount of light that passes through a pure water sample. The measurement is expressed as a percentage, % UVT.Thus ,the Ultraviolet transmittance tester was designed according to the The UV transmittance measurement.

Measurement of UV Transmittance is important for ultraviolet (UV) disinfection of drinking water, wastewater and process water. Low-pressure UV disinfection systems disinfect water using monochromatic UV light at the 254 nm wavelength. The effectiveness of a UV disinfection system is determined by the dose that the system is able to deliver to the target microorganisms in the water. The effective UV dose is dependent primarily on the combined effects of the UV light intensity, the exposure time and the UVT.



Ultraviolet transmittance tester includes the closest spectral characteristics of the sun's light source, high stability of the UV-visible spectrophotometer, fully functional control and data analysis software. It replaces the human body (In-VIVO) to measure the SPF value and various other important indexes of sun protection products and cosmetics, making measurement cost more economical, faster and more convenient.
-------------------------------------------------------------------

For more information about our testing instrument, please contact

· +86-21-6780 0179

· info@qinsun-lab.com

· or leave your comments below
标签：

评论

发表评论

此博客中的热门博文

Determination of air permeability of a fabric-air permeability tester

Fabric air permeability is a measure to what extent it gives air passing through the fabric. Air permeability, a given area in the vertical direction of the air flow rate, a given time period, is measured by the fabric test area inside the pressure difference of the fabric. Basically, it depends on weight, thickness and porosity of fabric. The porosity of fabric is the demonstration of the air gap as a percentage within fabric. It has been important for especially the tent fabric, parachute fabric, raincoat fabric and garment, the fabric used in air bags, industrial filters and sail cloth. Moreover, when thermal properties of clothing and body interaction are taken into consideration, there has been the effect of air permeability. there is an instrument which is designed to test the air permeability of fabric on the market .it is air permeability tester . Air permeability is an important feature of fabrics (Sundaramoorthy et al., 2011) and is one of the main factors affecting the t...
发表评论
阅读全文

How To Process The Elmendorf Tear Strength Test

The Elmendorf tear tester has been developed specially for the paper industry and is outstanding for simplicity of operation and high measurement accuracy. The exchangeable pendulum is equipped with a pneumatic sample clamp. The initiation and return of the pendulum, as well as sample cutting is completely automatic. The device is operated via an integrated touch screen, where the test method can be selected, specific settings can be adjusted, and, after the measurement, results and statistics can be  displayed.Each pendulum is supplied with the appropriate control weight so that, with the help of the service program, it can easily be checked for functionality and balance. The Elmendorf tear test Procedure:     Cotton fabric was taken.     Warp and weft direction of the fabric was identified.     Two strips were cut from the fabric in both directions having dimensions of 100 x 63.5 mm.     The sample was then fixed in the jaws of the ...
8 条评论
阅读全文

3 main functional values of the Burning Manikin System

3 main functional values of the Burning Manikin System 1) Research on the heat transfer mechanism of individual soldier's flame retardant equipment By simulating the battlefield fire conditions of different intensities, the changes of human skin surface heat flow and skin temperature by burning dummies, a good human body-clothing-fire environment conditions are created, and the individual soldiers are flame retardant The study of equipment heat transfer mechanism provides an important research method. 2) Research and screening of flame retardant fabrics for individual soldier equipment Quantitatively test the flame retardant properties of different individual soldier equipment fabrics through the burning dummy system, guide the research on flame retardant fabrics, and screen out flame retardant fabrics with excellent performance. 3) Structure and style design of individual soldier's flame retardant protective equipment The structure and style of individual soldier's flame r...
发表评论
阅读全文