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.