VWR* Visual Scientifics Photogate Sensor, Four Modes: Gate, Pulse, Pendulum, Frequency, also Works with VISUAL SCIENTIFICS and numerous physical science systems, This kit contains: 2 Photogates, 2Connecting wires, Main photogate hub and control, Wall charger
Linear Air Track with accessories, 1.5m length, Ideal for classroom use, Includes: (1) Linear air track, (1) Accessory pack, 63.8x7.1x12.6 inches, 24.9 pounds
Aquaponic System - Countertop 3, self contained system using recyled water carboys. Uses 2 feet of space. Includes all containers, pipe, connectors, filter material, air pump, and air diffuser.
Aquaponic three barrel aquaculture system is a complete aquaculture/aquaponics system that fits in a 5' square area, configured ecosystem featuring fish, biological filtration and an area for plant growth. Includes: (3) recycled