Empowering Scientific Discovery

Beijing Xianming Lesi Technology Development Co., Ltd.

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BrandGRACE
OriginGermany
ModelRI 2000
Detection PrincipleDifferential Refractometry
Refractive Index Range1.00–1.75
Flow Rate Range0.2–3.0 mL/min
Linear Range80 × 10⁻⁵ RIU
Noise Level5 × 10⁻¹⁰ RIU
Auto-Zero Range40 × 10⁻⁵ RIU
Auto-Zero Resolution5 × 10⁻¹⁰ RIU
Integrator Output±1 V
Recorder Output±10 V
Analog Input Range−5 to +5 V DC
Temperature SetpointsAmbient, 35 °C, or 55 °C (microprocessor-controlled)
Flow Cell Volume9 µL
Maximum Flow Cell Pressure6 kg/cm²
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BrandLaballiance
OriginUSA
Model305
Optical DesignDual monochromator with concave holographic diffraction gratings
Excitation/Emission Wavelength Range200–600 nm (Ex & Em)
Wavelength Accuracy±2 nm @ 248 nm Ex / 398 nm Em
Wavelength Precision<0.5 nm
Spectral Bandwidth Options8, 20, or 30 nm
Light SourcePulsed xenon lamp (20 Hz or 100 Hz selectable)
Flow CellBiocompatible quartz/Teflon/Kalrez/PEEK, 8 µL detection volume, max pressure 200 psi (14 bar)
Sensitivity2 µg/L anthracene in methanol, S/N > 1500 @ 284 nm Ex / 398 nm Em
Scan SpeedUp to 100 steps/sec
step resolution2, 4, 8, 16, or 32 nm
Stored Spectra CapacityUp to 60 emission spectra
Dynamic Range0.01–500 FUFS (Fluorescence Units Full Scale) with 15 programmable gain levels
Analog Output20-bit D/A converter, full-scale range adjustable
Detection ModesFluorescence, phosphorescence, chemiluminescence
Method Storage4 user-defined method files, each supporting up to 10 time-programmed wavelength transitions, with inter-file linking capability
Operating Environment10–40 °C, 5–95% RH (non-condensing)
Dimensions & Weight7" H × 12" W × 16" D, 24 lbs (11 kg)
Power Supply220 VAC, 50/60 Hz, max 2 A
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BrandLaballiance
OriginUSA
Model6000
Wavelength Range190–800 nm
Optical Path Length5 cm
Flow Cell Volume12 µL (10 mm path)
Noise±3 × 10⁻⁶ AU/cm
Drift1 × 10⁻³ AU/hr
Linearity>2.0 AU
Scan Rate≤20 Hz
Spectral Resolution1.2 nm
Wavelength Accuracy±1 nm
Light SourceDeuterium + Tungsten-Halogen Lamps
A/D Converter20-bit
Data Acquisition RateConfigurable up to 20 Hz
Beam DeliveryStacked Optical Fiber Optics
ComplianceASTM E275, USP <857>, ISO/IEC 17025-aligned verification protocols
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BrandLaballiance
OriginUSA
Model201/525
Wavelength Range190–380 nm (Model 201), 190–365 nm (Model 525) + Tungsten Lamp 366–800 nm
Dual-Wavelength Capability190–450 nm or 366–800 nm
Spectral Bandwidth6 nm
Wavelength Accuracy±1.0 nm
Wavelength Repeatability±0.1 nm
Noise< ±1.0 × 10⁻⁵ AU @ 254 nm (single wavelength)
Absorbance Range0.0005–3.0 AUFS
Absorbance Linearity>99% to 2.0 AU @ 254 nm
Optical DesignConcave holographic grating monochromator, dual-beam with fiber-optic beam splitter
Analog OutputDual-channel, full-scale selectable
Power Supply220 V, 50/60 Hz
Dimensions30.5 cm W × 40.6 cm D × 17.8 cm H (12″ × 16″ × 7″)
Weight14 kg (31 lb)
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