VIS Spectrophotometer Model 721

Description

B2185-5   VIS Spectrophotometer Model 721.
I know nothing about the unit or how they are supposed to work I acquired it at a sale of similar type electronics. The seller said that it was a new unit used very little if at all but was missing the original paperwork and box. I have plugged the unit in turned it on run it through all its features and modes and appears to be working. It comes with four clear square tubes in a blue back case. The case itself is broke and I have it taped, it slid off the main unit when I picked the unit up. Also the cosmetics on the unit are in very good condition not beat up or scratched up, a very clean machine.
Digital display measurement value
Automatic light door, automatic zero adjustment and 100 instrument calibration
Use original imported tungsten lamp to ensure the service life of the instrument
Large sample room, can hold up to 10cm cuvette
Specifications:
Wavelength Range: 350-1020nm
Spectral Bandwidth: 6nm
Optical System: C-T Single Beam, Grating 1200lines/mm
Wavelength Accuracy: ±3nm
Wavelength Repeatability:
≤
1nm
Photometric Accuracy: ±1%T
Photometric Repeatability: 0.5%T
Photometric Range: 0-200%T
，
-0.3A~3A
Stray Light:
≤
0.3%T @ 220nm,340nm
Stability: ±0.004A/h @500nm
Display: 4 LCD
Photometric Mode: T, A, C
Detector: Silicon Photodiode
Light Source: D2 lamp (1500hr), Tungsten lamp (2000hr)
Power Requirement: 110V
Dimensions (W x D x H): 450 x 520 x 320mm
Please look over the pictures for the condition of the item and ask any question prior to purchase. But buy with confidence I offer 30-day free returns of original sent item, if item is not as described.