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. 2016 Feb 18;6:21389. doi: 10.1038/srep21389

Table 2. Specifications and suppliers of instruments.

Instrument Model Key Parameter Supplier
Inductively coupled plasma optical spectrometer Optima 2000DV Detection limits: 1-10 ug/L, RSD ≤ 0.5% PerkinElmer, United States
Raman spectroscopy DXR Laser wavelength: 532 nm Thermo Fisher Scientific Co., Ltd., United States
ISCO pump 260D Flow Range: 0.001-107 ml/min Isco, Inc., United States
Data acquisition instrument 34972A - Agilent Co., United States
Low-temperature circulator FP51 Precision: 0.01 °C Julabo Co., Germany
Vacuum pump SHB-111 Final vacuum: 0.098 MPa Zhengzhou Greatwall Scientific Industrial and Trade Co, Ltd., P.R.C.
Centrifuge TDZ5-WS Max RPM: 5000 r/min Xiangyi centrifuge instrument Co., Ltd., Hunan Province, P.R.C.