DU800型紫外可见分光光度计 简要操作规程 一、操作程序: 1、开机预热:刷卡接通电源,然后打开仪器右后侧的总电源开关,此时POWER灯亮,再打开计算机。双击桌面上的DU800Spectrophotometer图标,计算机和仪器联机,仪器进入自检状态,待数分钟后,仪器将出现自检结果。待显示各项指标均Pass表示仪器自检完毕并自检通过,点击Continue...
Dept of Chemistry, Physics and Geology Operation of the Beckman DU 800 Spectrophotometer Page 1-3 Prepared By Date Jason C. Hurlbert May 26, 2010 1.0 OBJECTIVE The goal of this SOP is to train personnel in the operation of the Beckman DU-800 spectrophotometer in Sims 303B. This instrument...
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紫外可见分光光度计氘灯电源维修开关稳压电源的替代仪器保养DU800 UV/VIS spectrophotometer for Beckman Coulter instrument company is produced in USA,and the DU series of instrument can be divided into three different types 600,700 and 800.The instrument has a large amount of society and many users....
The double beam UV-visible spectrophotometer (JASCO, Japan) was used for determination of optical absorption of CuO NPs in the wavelength region of 800 to 200 nm. The nature of the bioactive compounds involved in the bio-reduction of Cu was identified by performing functional group identification...
Bacterially purified GST, His-AK2, His-AK3 and calf intestinal phosphatase (CIP) proteins were incubated with pNPP for 15 min and the OD405nm of the reaction supernatants was measured with spectrophotometer. Purified proteins used in these assays were stained with Coomassie-blue (insert). (g)...
UV-vis absorption spectra were recorded using a Shimadzu UV-1800 spectrophotometer in the wavelength range of 250–800 nm. 2.4. Photodegradation Measurement First, 240 mL of RB solution with a concentration of 6 mg/L was prepared. Total 6 samples (GaO(OH) and Ga2O3) were weighed for...
The absorbance (A0) of fresh 2.5×2.5 cm samples of coated film was measured at the sensitizer's visible absorption maximum (λmax) using a standard double beam spectrophotometer (Perkin Elmer model Lambda-9) scanning from 400 to about 600 nm. The sample was then removed from the spectrophoto...
Cool the samples to room temperature and measure the absorbance of each sample at the maximum absorbance of about 633 nm on a spectrophotometer using a water reference. Calculate the % dye exhaust and plot % dye exhaust vs dyebath temperature. Draw intersecting lines along each of the two ...
(or UDP-galactose 4-epimerase). The reaction was initiated with the addition of 2 μL 100 mM UDP-galactose and the production of NADPH was followed by monitoring the absorbance at 340 nm using a Shimadzu UV160U spectrophotometer. A nine-fold increase in epimerase activity was observed in ...