Wide spectrum range, the entire numerical displays of wavelength and readings of measurement.
The precise holographic grating.
Low stray light.
Auto "0%T" and "100%T".
All models equip RS232C port.
Optimum design of electrocircuit.
Small volume, fine sculpt and convenient .
Setting of concentration factor and direct reading of concentration, the function of direct reading of concentration.
The sample chamber obturated wholly for operating