Spectrometer

CHEMUSB4-UV-VIS Spectrometer, Low cost spectrometer

• The CHEMUSB4-UV-VIS is the perfect marriage of our USB-interface spectrometer technology and modular accessories. The system consists of a USB4000 Spectrometer with a combination deuterium tungsten halogen light source and 1-cm cuvette holder and high-speed electronics and operating software.
• The CHEMUSB4-UV-VIS covers the 200-850 nm range, has optical resolution of 1.0 nm (FWHM) and captures 3648 wavelengths in <1 second.
• Fully integrated, preconfigured system covers the 200-850 nm range at 1.0 nm (FWHM)
• Small-footprint system ideal for the laboratory and the classroom
• Direct-attach deuterium tungsten light source and sample holder
• 10 µs integration time
• USB 2.0 interface for fast, hassle-free spectrometer-to-PC connection.
• Serial port operation tips: When using the serial port, the USB4000 requires a single 5-volt power supply (not included). Also, SpectraSuite Spectroscopy Software does not support spectrometer operation via the serial port. However, using the included Serial Port Command Set, you can write your own software that makes serial port operation possible.

General specifications

• Spectrometer dimensions: 89.1 mm x 63.3 mm x 34.4 mm
• Spectrometer weight: 190 g
• Light source dimensions: 198 x 105.1 x 40.6 mm
• Light source weight: 200 g
• Power consumption: 250 mA @ 5 VDC
• Data transfer speed: Full scans to memory every 4 ms with USB 2.0 port, 18 ms with USB 1.1 port
• Connector: 22-pin connector
• Computer interfaces: USB 2.0 @ 480 Mbps (USB1.1 compatible); RS-232 (2-wire) @ 115.2 K baud
• Operating systems: Windows 98/Me/2000/XP, Mac OS X and Linux with USB port; Any 32-bit Windows OS with serial port.

Detector Specifications

• Detector: Toshiba TCD1304AP Linear CCD array
• Detector range: 200-1100 nm (the CHEMUSB4-UV-VIS is preconfigured to cover the 200-850 nm range)
• Pixels: 3648 pixels
• Pixel size: 8 micrometer x 200 micrometer
• Pixel well depth: 100,000 electrons
• Signal-to-noise ratio: 300:1 (at full signal)
• A/D resolution: 16 bit
• Dark noise: 12 RMS counts
• Corrected linearity: >99.8%
• Sensitivity: 130 photons/count at 400 nm; 60 photons/count at 600 nm
• Fiber optic connector: SMA 905 to 0.22 numerical aperture single-strand optical fiber
• Optical resolution: 1.0 nm FWHM
• Integration time: 3 µs to 65 seconds
• Dynamic range: 2 x 108 (system), 1300:1 for a single acquisition
• Power consumption: 1.8 A @ 5 VDC; external power supply (included)
• Pathlength: 1 cm
• Cuvette shape: Square

Source Specifications

• Light source: Deuterium tungsten
• "Z" dimension: 15 mm
• Bulb life (hours): 800 deuterium; 2,000 tungsten
• Time to stabilized output: ~30 minutes

TheSpectroDirect is a modern single-beam spectrophotometer with an excellent price/performance ratio that is specifically designed for water testing. The instrument is equipped with a wide range of pre-programmed methods based on the proven range of Lovibond® tube tests, tablet reagents, liquid reagents and powder reagents (Vario Powder Packs).

• Wavelength range from 330 to 900 nm
• Interface RS232
• Large illuminated graphic display
• Touch-sensitive film keypad with logical layout
• Use of round vials and rectangular cells of different sizes without adapter
• Fast, easy lamp change
• Software updates free of charge

TheSpectroDirect is a single-beam spectral photometer (see illustration). The light source is a tungsten halogen lamp with flash function. The lamp is switched on only momentarily during of the measurement process1), so there is no need for a warm-up period.

On the back of the SpectroDirect photometer, there is an RS232 interface with a 9-pin D-Sub connector for connection of a PC or a printer with serial interface (see accessories).

A wavelength scan is performed over the user-defined interval between 330 and 900 nm. The display shows the graph of the spectrum; if the user presses a key, the display also shows a data list with the corresponding maximum and minimum absorption levels.

basic mode: absorbance, transmittance or concentration

at most 9 standard can be used to establish a standard curve

if you know the coefficient of the formula C=k x A + b, you can enter them directly

Technical specifications

• wavelength range: 325-1000 nm (with tungsten lamp), 200-1000 nm (with tungsten and deuterium lamp)
• spectral Bandwith: 4 nm
• optical system: single beam, grating 1200 lines/mm
• wavelenth accuracy: +/- 2 nm
• wavelength repeatability: 0.8 nm
• photometric accuracy: +/- 0.5 % T
• photometric repeatability: 0.3 % T
• phometric range: -0.3-3.0 A, 0-200 % T
• stray light: 0.3 % T
• stability: +/- 0.002 A/h at 500 nm
• detector: silicon photodiode
• sample compartment: standard 10 mm pathlength cuvette
• output: USB port and parallel port
• power requirement: AC 220 V/50 Hz or AC 110 V/60 Hz
• weight: 12 kg

suitable for quantative test and kinetiks

tungsten and deuterium lamp can be turned on individually to extend lifetime

the optional software MWave Professional provides complete control of the spectrophotometer with a computer for quantitative measurement, kinetics, wavelength scan, multiwavelength and DNA/Protein test.

large sample compartment for 5-100 mm path length cuvettes with optional holders

Technical specifications

• wavelength range: 320-1000 nm (with tungsten lamp, version V1600 and V1800), 200-1000 nm (with tungsten and deuterium lamp, version UV1600 and UV1800)
• spectral Bandwith: 4 nm (version V1600 and UV 1600), 2 nm (version V1800 and UV 1800)
• optical system: single beam, grating 1200 lines/mm
• wavelenth accuracy: +/- 0.5 nm
• wavelength repeatability: 0.3 nm
• photometric accuracy: +/- 0.3 % T
• photometric repeatability: 0.2 % T
• phometric range: -0.3-3.0 A, 0-200 % T
• stray light: 0.05 % T at 360 nm (version V1600 and UV1800), 0.05 % T at 220 nm (version V1800 and UV1800),
• stability: +/- 0.002 A/h at 500 nm
• sample compartment: standard 10 mm pathlength cuvette
• output: USB port and parallel port
• display: graphic LCD 128 x 64 dots
• power requirement: AC 220 V/50 Hz or AC 110 V/60 Hz
• weight: 12 kg

2 types: stand alone and with PC. The PC models come standard with the UV-Vis Analyst application software

they all can be used for

simple absorbance, transmittance and concentration measurements

quantitative measurement with stored calibration equation

spectrum scan which choice of scanning speed and wavelength interval

kinetics, absorbance changing vs. time with reaction rate calculation

multi wavelength to analyze mixtures

calculation of cencentration and DNA/Protein purity

specific technical specifications

• UV-3000 and UV-3000 PC: Spectral Bandwith =4 nm, wavelength accuracy= +/- 0.5 nm, wavelength repeatability = 0.3 nm, photometric repeatability: 0.2 % T
• UV-3100 and UV-3100 PC: Spectral Bandwith =2 nm, wavelength accuracy= +/- 0.5 nm, wavelength repeatability = 0.3 nm, photometric repeatability: 0.2 % T
• UV-3200 and UV-3200 PC: Spectral Bandwith =1.8 nm, wavelength accuracy= +/- 0.3 nm, wavelength repeatability = 0.2 nm, photometric repeatability: 0.15 % T
• UV-3200S and UV-3200 PCS: Spectral Bandwith =0.5/1/2/4 nm, Spectral Bandwith =1.8 nm, wavelength accuracy= +/- 0.3 nm, wavelength repeatability = 0.2 nm, photometric repeatability: 0.15 % T
• UV-3300 and UV-3300 PC: Spectral Bandwith =1 nm, Spectral Bandwith =1.8 nm, wavelength accuracy= +/- 0.3 nm, wavelength repeatability = 0.2 nm, photometric repeatability: 0.15 % T

common technical specifications

• wavelength range: 190-1100 nm
• optical system: single beam, grating 1200 lines/mm
• scanning speed: Hi, Med, Low, Max, 3000 nm/min
• photometric accuracy: +/- 0.3 % T
• photometric ange: -0.3-3 A, 0-200 % T, 0-9999 conc.
• stray light: 0.05 % T
• stability: +/- 0.002 A/h at 500 nms
• baseline flatness: +/- 0.002 A (200- 1000 nm)
• light source: halogen and deuterium
• communication: USB and parallel port

monochromator with holographic flashing grating. It has the advantage of high wavelength precision, good monochromaticity and low stray light.

sample compartment for 0.5 cm-10 cm cells

direct concentration read-out and concentration factor setting function.

Technical Specifications

• Wavelength Range: 340 - 1000 nm
• Transmittance Range: 0 - 199.9
• Absorbance Range : 0 - 1.999
• Range for concentration display: 0 - 1999
• Wavelength Accuracy: ±3 nm
• Wavelength Repeatability: 1.5 nm
• Transmittance Accuracy: ±1%
• Absorbance Repeatability: 0.3%
• Bandwidth: 2nm
• Stray Light: 1.0%
• Overall Dimensions: 460 x 350 x 180
• Weight: 8 kg
• Display: LCD Screen with backlight
• Output ModeStandard RS232 serial port

monochromator with a holographic flashing grating. It has the advantage of high wavelength precision, good monochromaticity and low stray light.

automatic switching of tungsten halogen lamp and deuterium lamp.

sample compartment for 0.5cm-10cm cells.

computer control system

automatic zero and full scale adjustment.

direct concentration read-out and concentration factor setting function.

equipped with RS232 port. Printer can be connected and data can be sent to PC by special software.

Technical Specifications

• Wavelength Range325 - 1000 nm
• Wavelength Accuracy< 2nm
• Wavelength Repeatability<1nm
• Transmittance Accuracy±0.5%
• Transmittance Repeatability<0.2%
• Spectrum Bandwidth2nm
• Stray Light<0.5% (at 360nm, NaN02
• Light Current Drift0.5% / 3 min
• Dark Current Drift0.2% / 3 min
• Cell Holder Dimensions10 mm
• Weight: 14 kg

Visible Single Beam Spectrophotometer I 290

covers 195 to 1000 nm

high wavelength precision

deuterium lamp and tungsten lamp

sample chamber can be placed 5 mm~l00 mm samples

Rs232, can be connected to the computer and printer

Technical Specifications

• Photometric Range: 0~200% transmission ,-0.301~2.000A, 0~I999 Concentration
• Accuracy: ± 0.005 Abs at 1.0 Abs, ±0.010 Abs at l.5Abs
• Stray Light< 0.3%T at 220nm, 360nm
• Readability± 1 Count
• Key Board: 4 Keys, Soft touch membrane type
• Printer InterfacePrinter interface for any Centronics dot matrix printer
• Serial InterfaceRS 232C interface
• Light Source: halogen, deuterium lamp (2000h)
• Detector: wide range Silicon Photodiode
• Optics: Complete mirror optics with resolution 1200 grooves/mm grating
• Sample Holder4 position adjustable sample holder
• Absorbance Measurement Range: 0.000A-I.999 A
• Software included

Visible Single Beam Spectrophotometer LI 295

Large LCD Screen

Can display and save 50 groups of data, 5 groups per screen.

Tungsten lamp and deuterium lamp can be turned on/off individually to extend lifetime

With Wave length Scan Software

Technical Specifications

• Wavelength Range: 190-1000 nm
• Spectral Bandwidth: 2 nm
• Optical System: Single Beam, Grating 1200 lines/ mm
• Wavelength Accuracy: ± 1 nm
• Wavelength Repeatability: 0.3% T
• Wavelength Setting: Auto
• Photometric Accuracy: ± 0.5% T
• Photometric Repeatability: 0.3% T
• Photometric Range: -0.3-3A, 0-200% T
• Stray Light: 0.3% T
• Stability: <0.002A/h (at 500 nm, after warming up)
• Detector: Silicon photodiode
• Display: 128*64 dots LCD
• Standard Cell Holder: 4-position, 10mm cell changer
• Light Source: tungsten and deuterium lamp
• Output: USB Port & Parallel port (printer)
• Power Requirements: AC 85- 250V
• Dimensions: 420 x 280 x 180 mm
• Weight: 12 kg

Model LI-2800 with single cell cuvettes holder Model LI-2802 with 8 cell cuvettes holder

Technical Specifications

• Optical SystemDouble Beam (1200 Lines/mm Grating)
• Wavelength Range:190-1100 nm
• ModeBasic/Quantitative/Wavelength Scan/DNA Protein Test/ Kinetics
• Scanning Speed: Fast/Medium/Low
• Band Width:1 nm
• Wavelength Accuracy: ± 0.3 nm
• Wavelength Repeatability: 0.2 nm
• Photometric Accuracy: ± 0.3 %T
• Photometric Repeatability: 0.2 %T
• Photometric Display Range: 0-200 % T. -0.3-3.0 A, 0-9999 C
• Stability: 0.001 A/h at 500 nm
• Baseline Flatness: ±0.001 A
• Noise: ±0.001 A
• Stray Light: < 0.05 % T @ 220 nm. 360 nm
• Data Output: USB port
• Printer Port: Parallel Port
• Display: Graphic LCD (320*240 Dots )
• Lamps: Deuterium Lamp & Tungsten Halogen Lamp
• Detector: Silicon Photodiodes
• Dimension: 790x590x370mm (LxWxH)
• Weight: 26kg

Maximum of 9 wavelengths and 7 samples can be measured at one time.

Automatic change between lamps

Rich measurements method: wavelength scan ,multi-wavelength determination, multi-order derivate determination, double-wavelength method and triple-wavelength method etc. meet different measurement requirement.

Automatic10 mm 8 cells holder.

Data output via a printer port and a RS-232 interface.

PC controlled measurement can be achived for more accurate and flexible requirement.

Technical Specifications

• Wavelength Range:190-1100nm
• Spectral Bandwidth:1 nm
• Working Mode: T.A.C.E
• Optical System: Double Beam
• Scanning Speed: Fast/ Medium/ Slow
• Photometric Range: -0.3-3.5 A, 0 to 220% T
• Wavelength Accuracy: ± 0.3 nm
• Wavelength Reproductibility: <0.10 nm
• Photometric Accuracy: ± 0.3% T (0~0.1A) ± 0.002A (0~0.1A)
• Photometric Reproductibility: <0.15% T
• Stray Light: <0.1% T (Nal.220nm, NaNo2 340nm )
• Baseline Flatness: ± 0.002A
• Stability: <0.001A/h (at 500nm,after warming up)
• Noise: ± 0.001A (at 500nm,after warming up)
• Detector: Dual silicon photodiode
• Display: 6 inches high light blue LCD
• Power: AC 220 ± 10%,50 Hz
• Dimensions: 630 x 470 x 210 mm
• Weight: 26 kg