110V Sodium Spectrometer Light Source Pack Size_48 providing the high-resistance leg of

providing the high-resistance leg of a voltage divider where current draw needs to stay in the microampere range

the slim half-disc geometry letting beams enter the curved face along its radius for clean refraction-angle and TIR observations

supplied with keepers in a cardboard storage box for routine classroom work on field lines

accepting vertical support rods up to 5/8 inch on standard laboratory stands

Used as the primary standard for acid-base titration calibration

110V Sodium Spectrometer Light Source Pack Size_48 providing the high-resistance leg ofSelectable 2mm and 4mm circular apertures and a 4 x 20mm vertical slit on this 110V sodium light source provide uniform monochromatic illumination for spectrometer measurements.