YANTAI STARK INSTRUMENT CO., LTD.

721G VIS Spectrophotometer been widely used in colleges and enterprises for general quantitative analysis and experiments based in absorbance measurements.

● High quality silicon photometric diode detector and 1200 lines/mm diffraction grating ensure the  high quality accuracy and precision.
● Backlit LCD display for an easy readout.
● Automatic 0A and 100%T.
● Easy switching of transmittance, absorbance and concentration modes, just by pressing one key.
● Direct concentration read-out and concentration factor setting function.
● Large sample compartment, for 5 - 100mm path length cuvettes with optional holders.
● Easy to change the halogen lamp or deuterium lamp by the user himself.

Main Features

● Sample compartment for 5-100mm cuvettes

● Equipped with RS232 port

● Precise automatic T/A changeover

 

● Automatic zero and full scale adjustment

● Direct concentration read-out and concentration factor setting function

● Software optional

● Dedicated printer optional

Specificatons

Photometry:     Split Beam

Monochromator Type:    Czerny-Turner

Focal Length:    160mm

Grating:    1200 lines/mm

Detector:     Silicon Photocell

Spectrum Bandwidth:    5nm

Wavelength Setting:     Manual Turn Knob

Wavelength Range:    340-1000nm

Wavelength Accuracy:    ±2nm

Wavelength Repeatability:    ≤1nm

Stray Light  :     ≤0.5%T( at 360nm NaNo2 )

Photometric Range:     0.0-100.0% T

0.000-1.999 A

0.000-1999 C

Photometric Accuracy:    ±0.5% T

  ±0.004 Abs (0-0.5A)

  ±0.008 Abs (0.5-1A)

Photometric Repeatability:    ≤0.2% T

     0.002 Abs (0-0.5A)

        0.004 Abs (0.5-1A)

Noise:    100%（T）noise≤0.3%(T) ， 0%（T）noise≤0.2%(T)

Power:    AC220V±22V 50Hz±1Hz, 130W

Packaging Size:    560mm X 490mm X 285mm 0.08M³ 14kg

Standrad Accessories

● Operation manual 1

● UV WIN8 Spectrum data processing software

● Glass cuvette 1cm 4pcs
● Power cable 1
● Fuse 2pcs
● Cuvette holder 50mm

Optional Accessories

● Thermal Plotter