Special liquid chromatograph for melamine analysis

　　Technical Parameters:

　　1. LC600 high performance liquid chromatograph-P600 high pressure constant flow pump:

　　Basic technical indicators:

　　Flow rate range: 0.001～9.999ml/min Adjust the flow rate in 0.001ml/min steps.

　　Flow accuracy: RSD≤0.15%(1ml/min)

　　Flow accuracy: Ss≤2% (1ml/min water, 5～10MPa room temperature)

　　Maximum working pressure: 42MPa (0.001～9.999ml/min)

　　Pressure linearity and accuracy: display pressure error ≤0.5 MPa (0～42MPa)

　　Pressure pulsation: ≤0.2MPa (flow rate 1ml/min, pressure 5～10MPa)

　　The tightness of the pump: the pressure is 42MPa, the time is 10min, and the pressure drop is ≤0.5MPa.

　　Dimensions: 450mm×300mm×160mm (length×width×height)

　　2. LC600 high performance liquid chromatograph-UV600 ultraviolet detector:

　　Basic technical indicators:

　　Wavelength range: 190～600nm

　　Spectral bandwidth: 8nm

　　Wavelength indication error: ≤2nm

　　Wavelength repeatability: ≤0.5nm

　　Baseline noise (peak-peak): ≤5×10-5AU (mobile phase methanol, 254nm)

　　Baseline drift (peak-peak): ≤5×10-4AU (mobile phase methanol, after stability, 254nm)

　　Minimum detection volume: 2×10-8g/ml (methanol solution of naphthalene)

　　Dimensions: 450mm×300mm×160mm (length×width×height)

　　3. LC600 High Performance Liquid Chromatograph-Chromatography Workstation

　　The basic functions are:

　　1. Six quantitative calculation methods: normalization method, modified normalization method, modified normalization method with scale factor, internal standard method, external standard method and index calculation method.

　　2. Calibration operation: It is possible to use a variety of different concentrations of standard samples for calibration, and establish a sample concentration-area calibration curve.

　　3. Flexible peak identification and processing capabilities: the processing of chromatographic peaks can be identified by setting peak processing parameters and time programs, or it can be processed manually.

　　4. Chromatographic graphs, set quantitative calculation methods, peak processing parameters and peak identification tables, etc. can be saved in a file named by the user.