Focus - Model 721 -VIS Spectrophotometer

The cheap 721 spectrophotometer is a vis spectrophotometer and low cost spectrophotometer.It is based on the principle of spectrophotometery and can measure the transmittance, absorbance, concentration factor& concentration direct reading of liquid samples.The 721 economic spectrophotometer is widely used in food,drinking water plants,metallurgy, chemical industry, machinery, medicine, education etc.