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V-780 UV-Visible/NIR Spectrophotometer Jascoinc

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The V-780 UV-visible/NIR spectrophotometer features a single monochromator with automatically exchanged gratings: 1200 lines/mm for the UV-Visible region and 600 lines/mm for the NIR region. A PMT detector is used for the UV-Visible region and a high sensitivity InGaAs detector in the NIR region.

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Optical System Czerny-Turner mount

Single monochromator

Fully symmetrical double beam type
Light Source Halogen lamp, Deuterium lamp
Wavelength range 190 to 1600 nm
Wavelength accuracy +/-0.3 nm (at 656.1 nm)

+/-1.0 nm (at 1312.2 nm)
Wavelength repeatability +/-0.05 nm (UV-Vis), +/-0.1 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)

NIR:

0.2, 0.4, 0.5, 1, 2, 4, 10, 20,

L4, L10, L20 nm (low stray light mode)

M2, M4 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: L2nm


0.04 % (1420 nm: H2O)

SBW: L4 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: 12000 nm/min

NIR: 24000 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

0.04 % (220 nm NaI 10 g/L aqueous solution)

0.02 % (340 nm NaNO2 50 g/L aqueous solution)

0.02 % (370 nm NaNO2 50 g/L aqueous solution)

(10 mm cell)
Baseline Stability ±0.0004 Abs/hour

(Wavelength: 250 nm,

response: slow and SBW: 2nm.)
Baseline flatness +/-0.0002 Abs (200 - 1600 nm)
Detector Photomultiplier tube, Peltier cooled InGaAs photodiode
Standard functions IQ Accessory, Start Button, Analog output
Standard programs Abs/%T meter, Quantitative analysis, Spectrum measurement, 

Time course measurement, Fixed wavelength measurement, Validation, 

Daily Check 

Two wavelength time course measurement
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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