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V-770 UV-Visible/NIR Spectrophotometer

The V-770 UV-Visible-Near Infrared Spectrophotometer is a unique optical design incorporating a dual-grating, dual-detector design to fully cover the wavelength range from 190 to 2700 nm (3200 nm option).

System Description

The V-770 UV-Visible-Near Infrared (UV-Vis/NIR) spectrophotometer features a monochromator with automatically exchanged dual gratings: 1200 lines/mm for the UV/VIS region; 300 lines/mm for the NIR region. A PMT detector is provided for the UV-visible region and a Peltier-cooled PbS detector is employed for the NIR region. Both gratings and detectors are automatically exchanged within the user selectable 800 to 900 nm range.

Operating Systems

Two user interfaces are available. The Spectra Manager™ II software, the latest version of JASCO's innovative cross-platform spectroscopy software, is now compatible with Windows 7 Pro (32- and 64-bit configurations) and the Windows 8.1 operating systems.

For simple and routine operation, the intelligent remote module (iRM) has been completely redesigned with a new look and feel, with a color LCD touch screen. Data can also be downloaded to a USB memory stick for portability or further PC data processing.

The V-700 Series has a growing list of software applications for both Spectra Manager II and for the iRM. If you have an application which you don’t see listed, please let us know as we may already have it or we can prepare an application designed specifically for your requirements.

Both of these interfaces allow full system control and advanced data processing. Spectra Manager CFR is the 21 CFR part 11 compliant version of software and is available as an option.

System Features

IQ Accessory and IQ Start

The IQ Accessory function provides automated accessory recognition with identification of the accessory within the method. The spectral data files include the accessory information and serial number while designated instrument parameters can be configured and loaded for optimum sample measurements. IQ Start together with the Start Button is used to immediately start a sample method for immediate access when making routine measurements.

Wide Wavelength Range from UV to NIR

The V-770 can measure the spectrum of a sample within the wavelength range of 190 to 2700 nm (3200 nm - factory option). The single monochromator design offers a higher energy throughput resulting in a better S/N ratio over the entire spectral range, even with narrow bandwidth settings.

Full Line of Accessories

A full complement of accessories is available for the V-700 series of UV-Visible-NIR spectrophotometers for virtually any biological, material science or routine QA/QC measurement. Some accessories are common across the V-700 Series and others are instrument specific. Refer to the instrument brochure for accessories specific to your desired instrument.

Options include a wide variety of liquid cell holders, micro and ultra-micro cell holders, flow cell units and accessories for solid samples. Advanced accessories, include automated cell changers, sippers, integrating spheres, automated and manual absolute reflectance accessories and programmable temperature control systems are available for any of the V-700 instrument systems.


Optical System  

Czerny-Turner mount
Single monochromator
Fully symmetrical double beam type

Light source   Halogen lamp, Deuterium lamp
Wavelength range   190 to 2700 nm (3200 nm, option)
Wavelength accuracy   +/-0.3 nm (at 656.1 nm)
+/-1.5 nm (at 1312.2 nm)
Wavelength repeatability   +/-0.05 nm (UV-Vis), +/-0.2 nm (NIR)
Spectral bandwidth (SBW)   UV-Vis:
0.1, 0.2, 0.5, 1, 2, 5, 10 nm
L2, L5, L10 nm (low stray light mode)
M1, M2 nm (micro cell mode)
0.4, 0.8, 1, 2, 4, 8, 20, 40
L8, L20, L40 nm (low stray light mode)
M4, M8 nm (micro cell mode)
Stray light   1 % (198 nm KCL 12 g/L aqueous solution)
0.005 % (220 nm NaI 10 g/L aqueous solution)
0.005 % (340 nm NaNO2 50 g/L aqueous solution)
0.005 % (370 nm NaNO2 50 g/L aqueous solution)
SBW: L2 nm

0.04 % (1420 nm: H2O)
0.1 % (1690 nm: CH2Br2 50 mm cell)
SBW: L8 nm
Photometric range   UV-Vis: -4~4 Abs
NIR: -3~3 Abs
Photometric accuracy   +/-0.0015 Abs (0 to 0.5 Abs)
+/-0.0025 Abs (0.5 to 1 Abs)
+/-0.3 %T Tested
with NIST SRM 930D
Photometric repeatability   +/-0.0005 Abs (0 to 0.5 Abs)
+/-0.0005 Abs (0.5 to 1 Abs)
Tested with NIST SRM 930D
Scanning speed   10~4000 nm/min (8000 nm/min in preview mode)
Slew speed   UV-Vis: 12,000 nm/min
NIR: 48,000 nm/min
RMS noise   0.00003 Abs
(0 Abs, wavelength: 500 nm, measurement time: 60 sec, SBW: 2 nm)
Baseline stability   0.0003 Abs/hour
(Value obtained more than two hours after turning on the source, when
the room temperature is stabilized, wavelength: 250 nm, response: slow and SBW: 2 nm)
Baseline flatness   +/-0.0002 Abs (200 - 2500 nm)
Detector    Photomultiplier tube, Peltier-cooled PbS
Dimensions and weight   460(W) x 602(D) x 268(H) mm, 29 kg
Power requirements   150 VA
Installation requirements   Room temperature: 15-30 Celsius, humidity: below 85%


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