double beam spectrophotometer

1

It was shown that when nucleic acid preparations were examined by two-wavelength and double beam spectrophotometer , the high and low absorption peaks were at 258 nm and 230 nm , respectively , ( Fig. 1 ) which was in accord with typical ultraviolet absorption spectrum of nucleic acids .

核酸样品经日立双波长和双光束分光光度计测定，在258nm左右有一吸收高峰，低峰在230nm附近，呈现出核酸的紫外吸收光谱曲线。
2

Ultraviolet double beam spectrophotometer

紫外双射束分光光度计