Products

Visually compare conductivity between different solutions. The green LED is numbered from 1-10 and will light up as the probes are dipped into solutions of salts or acids.

Determine the conductivity of different liquids with this qualitative device which causes a bulb to glow when water conducts electricity. Because there's no shock hazard, due to a built-in fuse, it's safe for all ages. Includes plastic body with recessed connections and electrodes. Attaches to standard ring stand (not included). Operates on 110 V AC only. You will need a 15 watt bulb, not included.

This is a perfect kit for demonstrating the technique used for copper plating. Kit includes : Glass Battery Jar, Copper Anode, 2 Brass Connecting Posts, 2 Wire Connectors with Aligator Clips, 500g Copper Sulfate, MSDS, & Paper Clips.

This is a great new multimeter with a 1" high contrast LCD that can tilt up and down for ease of use. It includes a single 32 position easy-to-use rotary switch for function and range. The device features auto power off and overload protection. The multimeter is CE approved. A protective holster, fold-out stand and full instructions are provided.

Technical specifications:

DCV: 200mV-1000V +/-(0.5%+1)
ACV: 2V-700V +/-(1.2%+3)
DCA: 20mA-20A +/-(0.8%+3)
ACA: 20mA-20A +/-(0.8%+1)
OHM: 200 ohms - 200 mega ohms +/-(1.2%+3)
CAP: 2000p-20 microF +/-(2.5%+3)
TEMP: -40°C-1000°C +/-(0.75%+1)
FREQ: 20kHz +/-(1%+1)
Yes to the following: transistor test, diode test, data hold, continuity buzzer, and LCD display.
Power: 9V
Display Size: 27x60mm
Product Net Weight: 320 g Product Size 186x86x33mm

Our ten-electrode kit is the right mix for science fairs! Includes: carbon rod electrode (one); nickel electrode (one); copper, iron, zinc, aluminum electrodes (two each). The electrodes are 4" x 3/4" each except for the 4" carbon rod. They feature a large surface/mass ratio.

4" electrodes with chemical symbols are sold separately in packs of 10 (zinc is a pack of 5).

2" electrodes are available in copper and zinc, sold inspanidually.

pH indicator paper turns red under acidic conditions. pH range 4.3 - 6.8. 100 strips.

pH indicator paper turns blue under basic conditions. pH range 6.8 - 8.1. 100 strips.

pH indicator paper is sensitive to entire pH range, 1 - 14. 100 paper strips.

Our 665-0300 Complete Student Cell is a safe, sturdy kit. You can build a voltaic, coulometer, dry, or Daniel cell. The polypropylene 8 oz. cell has a low profile and wide base; porous cup; 8 labeled electrodes: copper, zinc (2 each) and, iron, aluminum, nickel, carbon rod (one each). Screw-on plastic rim has 2 brass electrode holders. Includes instructions.

The 665-0200 Daniel cell comes with the top ring and bracket to be used on your own jar. It comes with one copper electrode, one zinc electrode, and two aligator clip leads.

We also offer the porous cup separately to upgrade an existing kit (or to replace a broken one).

The Thermoelectricity Demo is an excellent way to illustrate the Seebeck Effect. When a thermoelectric loop is fashioned from two dissimilar metals and they are connected together at two junctions, and a temperature gradient exists, a voltage or electromotive force (EMF) is induced which is enough to deflect a magnetic compass. Our device features an aluminum strip on the bottom with a bent copper strip on top. There is a depression underneath the copper loop for placement of a small magnetic compass. Also, our device features an attached handle for safety and ease of use.