How to purchase an ultraviolet spectrophotometer?
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I want to buy an ultraviolet spectrophotometer for testing the absorption of acetonitrile. The standard requirement is less than 280nm. Which model can meet my testing requirements while being inexpensive? What aspects should be considered when purchasing ultraviolet products? Thank you :)
1. Shanghai Yuansi Instrument Co., Ltd., UV-5200 model: 190–1100nm. 2. Wuxi Keda Intelligent Instrument Factory, Series 752: 190–1100nm; price: around 7000.00. Last edited by Canghai Yili Sha on 2009-4-14 at 15:02
Thank you for the quote from above. But you haven’t mentioned the key issue: why choose the model you mentioned? What aspects do you consider when making a purchase?
1. Your measurement wavelength is 280nm, and this instrument can meet your testing requirements； 2. It is domestic equipment, inexpensive, and many instrument manufacturers in Shanghai produce it under their own brand names, thus meeting your requirement for low prices ； The prices of products from Shanghai Precision Instruments Company range from around 13,000 to 15,000 yuan, while imported instruments generally cost between 28,000 and 50,000 yuan. Such as: Shimadzu, Agilent, Varian, and so on. 3. When purchasing an ultraviolet spectrophotometer, factors such as stability, light source, and accuracy should be considered, as well as the cost-performance ratio, including aspects like the degree of automation ；
There is also the issue of single-beam and dual-beam. Stability, light source, and deviation – you don’t know what they’re like until you buy it. It’s still hard to be sure when making a purchase.