Spectronic 20+ Series User Manual

meter spectrophotometer with a wavelength range of
340 nm to 950 nm. The nominal spectral slit width of
20 nm is constant over the entire range.
The SPECTRONICOII 20+ spectrophotometer (Cat.
Nos. 333182-000, 333182-02, 333182-04, 333182-05
or 333182-07), shown in Figure I-I, is a single-beam
2
3
//1
I:.
-::--
...
,.'
4
""6
5
Figure I-I SPECTRONIC 20+ spectrophotometer
KEY
1. Sample compartment
2. Pilot lamp
3. Wavelength control
4. Transmittance/Absorbance control (lOO%T/OA)
5. Power switch/Zero control
6. Filter lever

Spectronic 20+ Series Specifications

General

Spectral Bandwidth	20 nm
Light Source	Tungsten lamp
Detector	Silicon photodiode
Wavelength Accuracy	±2 nm
Display	Digital display (Spectronic 20+)
Power Requirements	50/60 Hz
Sample Holder	Accommodates standard 10 mm square cuvettes