Wireless Color Weather Station, 12/24 hr atomic time (manual set), Perpetual Calendar (day,month,date), Time alarm with Snooze, Transmission range: Up to 300 feet, Sensor: 2 AA Alkaline batteries, Indoor humidity range: 1% to 99% RH, Display: 6.16x0.93x9.65in
Sling Psychrometer, to measure relative humidity, Includes two plastic-backed Celsius thermometers, one for dry bulb measurements and the other for wet bulb measurements, Includes an activity guide with relative humidity calculation table, Requires assembly
Solid Steel Ball, 1-1/2In, Pair (Smashing Steel Sphere Kinetic Energy Demo), For physics experiments and demonstrations such as kinetic, density and volume measurements, pendulum bob, potential energy and conservation experiments, ballistics etc.
Go Direct* Nitrate Ion-Selective Electrode, Range: 1 to 14,000 mg/L, 2-11 PH, 1 to 4 M omega Electrode resistance, 300 mA Li-Poly Battery, 500 full charge cycles (several years depending on usage)Battery life, connects via Bluetooth* wireless technology
Graduated Cylinder, Material: Polypropylene, Industrial, Octagonal Bases for stable use, US Sourced Plastic, Autoclavable polypropylene plastic allows for easy cleaning and sterilization, Class B tolerances, Calibrated to contain, manufactured with the highest grade, Size: 50ml