The Educator is a bench-top instrument built to withstand the duress of school labs. It offers a continuous wavelength range of 400 to 900nm and performs well in the analysis of chlorophyll, chemical equilibrium determination, Beer's Law studies and water analysis. Readings are taken from the large digital display either as 0-100% transmittance or 0-1.99 absorbency. The User's Manual contains not only operating instructions, but 5 full spectrophotometry labs for your students, background information and complete troubleshooting guides and charts. Additional experiments and teacher notes are available in the 68-page Educational Manual. The Spectronic Educator comes complete with a box of 13mm test tubes and a test tube adapter.