... WJ-Na/Hg low pressure sodium/mercury lamp power sourceCharacteristics1 Electronic rectified technology, no noise ... °; 2 mercury lamp:main spectral line: 5770A°; 5790A°; 5461A°; 4047A°3 provide power source for interferometer, refractometer ... , spectral luminometer, monochrometer and other kind of apparatus WJ-Na/Hg low pressure sodium/mercury lamp power source ...