RIPPLE TANK ADVANCED WITH PROJECTION SCREEN 220V Type_Abacus the larger volume differential medium for the larger volume differential medium for whole class Enterobacteriaceae citrate utilization screening in microbiology the wide aperture suiting full class divergence demos and security mirror analogue investigations No Need for Separate Overhead Projector Electronic strobe and control Inbuilt projection screen for easy view Foam beaches on tank Wave Generator unit Full range of accessories are included This advanced ripple tank from EISCO comes complete with all accessories needed for wave investigations The frame is made of reinforced plastic and with foam beaches ( to negate reflections) Intense illumination by strong light source which is synchronized with the wave generator helps students to observe the wave patterns on a workgroup table