Amplifier 4 Channel, signal conditioner for iWorx-brand transducers that provides four channels of excitation power, gain, and noise filtration, exhibits low system noise and offset, ideal solution for conditioning signals from low-ba
4D Anatomy Human Heart Model, 4.5in model contains 32 detachable, hand-painted medical education-quality organs and parts and a display stand, Also includes illustrated assembly guide and description of the anatomy, Has unique puzzle challenge, For ages 8plus
Animal cell, enlarged 20000 times, in somso-plast*. The model shows the recently discovered principles of the delicate structure of an animal cell. in one piece, on a stand with base. height: 52 cm, width: 39 cm, depth: 26 cm, weight: 3.7 kg.
Ant Life Cycle Stages, Children can see how ants change as they grow with Insect Lore’s Ant Life Cycle Stages. These oversized, anatomically correct figures have been accurately painted and sculpted to show the four stages of ant development: eggs, larva, pupa and adult.
Ant Mountain* tunneling kit, has a fascinating inside/outside design which allows kids to watch their busy ants work cooperatively to tunnel, explore and forage throughout their rugged environment, anyone can become a myrmecologist with Ant Mountain
Aquaponic Grow rack, used with an existing tank or aquarium or placed on top of optional 55 gallon fish/filter barreLS (sold separately), used next to a pond outdoors. Four trays can support a total of 24 plants
Aquaponic Grow rack, includes (2) 55 gallon fish/filter barreLS, used both indoor or outdoors. Four trays can support a total of 24 plants. Each tray has adjustable water depths valves. Higher water leveLS for starting new
Complete Aquaponics system using recycled water carboys, top half container is used as filtration and plant growbed, two connected containers hold almost 10 gallons of water, Both can hold fish. No direct plumbing connec
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 system top half barrel is used for filtration and aLSo a growbed for plants, two connected barreLS hold almost 100 gallons of water. Both barreLS can hold fish giving you the flexibility to separate sizes or species.
Aquaponic system top half barrel is used for filtration & aLSo a growbed for plants, two connected barreLS hold almost 100 gallons of water. Both barreLS can hold fish giving you the flexibility to separate sizes or s
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