Outlet Check Valve Assembly, Shimadzu LC-20AB, LC-20AD, LC-20ADXR, LC-20ADsp, LC-20ADnano, LC-30ADSF, Prominence-i (LC-2030/LC-2030C), Nexera-i (LC-2040/LC-2040C), LC-ADvp, LC-ATvp, LC-10AD, LC-AT, 600, 9A 250-1505-X View Product 2 Piece Style Inlet Housing, Sh...
UV spectra were recorded using a Shimadzu UV-2401A spectrophotometer. 1D and 2D NMR spectra were performed on a Bruker AM-400, DRX-500 or AV Ⅲ-600 spectrometers with TMS as an internal standard. Mass spectra were obtained on a VG Auto Spec-3000 or API-Qstar-Pulsar instrument. For ...
Objective:To establish an RP-HPLC method for the determination of ursolic acid and oleanolic acid in different parts of Prunella vulgaris L.. Methods:The determination was carried out with SHIMADZU VP-ODS column(4.6 mm×250 mm,5 μm),using acetonitrile -methanol-water-ammonium acetate(69∶ 16...
Deuterium lamps for HPLC systems are among the most costly parts to replace, which makes the qual- ity of the lamp particularly important. Figure 3 graphs test results of lamps selected by Agilent and OEM lamps over nearly 2,000 hours. Lamp data averaged in this graph show that OEM and ...
MPLC system was composed of two C-605 pumps (Büchi), a C-635 UV detector (Büchi), a C-660 fraction collector (Büchi), and an ODS column (450 mm×60 mm, 50 μm, 400 g; YMC). Semi-preparative HPLC was conducted using a Shimadzu LC-6AD instrument with an SPD-20A detector ...
aReactions were followed by chiral RP-HPLC on Shimadzu LC-10 systems: For amide analysis, samples were diluted to 0.2–0.5 mM with methanol and filtered (0.2 lm PTFE),prior to HPLC analysis as follows: Daicel Chiralpak ASRH (5 lm, 0.46 · 15 cm) column; 反应由chiral RP-HPLC在岛津LC-...
Analytical high-performance liquid chromatograms along with UV-spectra were obtained using a Prominence LC-20 with a SPD-M20A diode-array detector (Shimadzu corp.) with a Supelcosil LC18 column (250 × 4.6, 5 μm). Preparative HPLC was carried out using a Knauer Smartline system with...
UV spectroscopy is a type of absorption spectroscopy in which light of the ultra-violet region (200-400 nm) is absorbed by the molecule which results in the excitation of the electrons from the ground state to a higher energy state.
UV spectra were recorded using a Shimadzu UV2401PC instrument. IR spectra were run on a Bruker Tensor-27 spectrometer with KBr pellets. CD spectra were measured on a Chirascan instrument. Optical rotations were taken on a Horiba SEPA-300 polarimeter. 1D NMR and 2D NMR were performed on a ...
of VOC (hereinafter referred to as the test method) for the interior parts (hereinafter referred to as parts) and materials, including cut-out parts. Method #1 is defined as the method in which VOC is measured using a part assembly unit and Method #2 is defined as the method in which ...