Made from Acrylic about 3mm thick, with highly silvered back.

These steel pins are coated with a black corrosion-resistant finish and have a yellow epoxy head. Pk/100.

The economy food calorimeter allows students to investigate the amount of energy released when food is burned. This involves using the burning energy of food to heat a vessel of water. The increase in temperature of the water represents the energy given off by the burning food. During the…

Constructed of anodized aluminum, with steel hooks, this spring scale is extremely durable. Available in seven color-coded sizes.

Friction Rods are 12"; long unless noted. Excellent for demonstrating static electricity

Natural Gas with Flame Stabilizer Tirril Bunsen Burner

Single folding magnifier in an aluminum case. One lens, 25mm diameter, 10x magnification

This unique hand generator is an easy yet effective way to teach how AC and DC electricity is produced. Banana plugs can be inserted into the different connectors to change from AC to DC electricity. The unit has a clear base for easy demonstration of connections. Includes an activity guide.

Display version of the Foucault 1851 experiment to demonstrate the Earth's rotation. The 57" high unit contains a maintained pendulum whose precession rate can also be used to calculate latitude or time. This product has a 90 day lead time. Market standard for this type of product.

These clamps are molded in polypropylene, making them completely corrosion proof. The spring loaded jack in the middle provides a vice-like grip to the burette and prevents in from slipping. Two tapered wedges are provided to ensure firm grip on the rods having diameter 0.5" or3/8".…

Bright plastic case makes this hand tally counter lightweight yet sturdy. The counter advances by 1, up to 9999 each time the button is pressed. Turn the side knob to return the reading to zero. Use for counting bacterial colonies, vibrations of a pendulum, etc.

Clamp holders for rods up to 19mm (0.75") in diameter. Available in Cast Iron or Brass.

Sturdy economical scale for general use in the lab. It features a round plastic weighing platform. Capacity is 5 kg, or 11 lbs.

Includes a variety of tools, and objects for teaching basics of measurement. Kit is shipped in a reusable storage box. Kit includes Activity Guide with 15 activities.

This clear plastic 12" ruler is scaled in 1/16" increments on one side and MM on the other.

Inspired by naval periscopes used on submarines, our handheld periscope is designed to show students the reflective qualities of light. Our version consists of an outer case with mirrors at each end set parallel to each other at a 45 degree angle.

2"; long, plain, chrome plated alligator clips with excellent conductivity. 2"; long, with insulated sleeve, chrome plated alligator clips with excellent conductivity. Pack of 10, five each red and black.

This apparatus helps students to understand the Coriolis effect, the phenomenon whereby an object moving on a spinning surface will travel in a curved path. The demonstrations that follow will allow students to observe the Coriolis effect on a small scale, then explore how the Earth’s constant…

Tuning forks made from alluminum alloy. The frequency and leter scale is stamped on each fork.

Connect this clamp to any support rod and set up to three separate pendulum demonstrations. Includes individual cord clamps.

The United Hartl Optical Disk is a compact apparatus that demonstrates the behavior of optical elements by means of ray paths through clear acrylic models. It consists of a circular 9” diameter graduated disk mounted on a stand and fitted with a ray box on an adjustable arm. Narrow, parallel…

This silicone flask stand can support round bottom flasks as large as 2000 mL, as well as other items like beakers and dishes. The stand has 12 molded-in steps to provide a secure grip for a wide range of flasks. The silicone material that is heat resistant to 250° C. Flask stand…

Double sided dry-erase mat (9” x 11”) includes a 1 cm x-y axis grid on one side for graphing activities. The other side is blank but coated so it can be used with dry-erase markers. Sold as a pack of 10.

Based on proven designs, this updated Boyle’s Law Apparatus permits a quantitative verification of Boyle’s Law to be quickly and easily performed. The results are reliable and more convincing than measurements obtained from a simple syringe-based apparatus. The air sample is…

Set includes two helical springs. The long, narrow spring measures 3/4" x 72", and can be extended to 5 meters. The larger spring measures 3" x 4", and can be extended many times its length without distortion. The long, narrow spring measures 3/4" x 72", and can…

Good quality pipettors designed for easy and precise pipetting. Pumps feature a lever for quick release, and forward or backward wheel movement. The soft elastic chuck has a threaded collar to tightly grip glass or plastic pipettes. Easy to clean. Each size color coded.

This Collection contains 20 Types of Specimens, (10 Rocks Specimens of Igneous, Sedimentary& Metamorphic Rocks Types & 10 Minerals Specimens). The Rock Specimens include Some of the following Basalt, Granite, Pumic, Gniess, Marble, Quartizite, Serpentine, Bituminous Coal, Lime Stone, Sand…

Glass prepared microscope slides, supplied in a plastic  case. A collection of slides specific to the study of botany. Set of 25. 1.    Chlamydomonas, E, 2.    Spirogyra, vegetative filaments, E 3.    Spirogyra, conjugation, E 4.  …

Set of 4 powerful alnico magnets with keepers. Set consists of 2 bar magnets 80mm x 15mm x 10mm; a small horseshoe magnet 25mm tall x 8mm wide; and a large horseshoe magnet 35mm tall x 15mm wide. Shipping dimensions 4"; x 4"; x 1"; shipping weight 375 grams.

This excellent quality electrostatic generator consists of a charge generation system, an aluminum collector sphere and an electric motor drive on a sturdy base. The charge generation system is based on a moving neoprene belt mounted on insulating rollers with metal charge transfer combs. The…

This instrument is an enhanced version of our popular Intermediate Spectrometer.  Its larger 30mm diameter optics give brighter line images and make precise measurements easier.  The optical focusing system has also been refined and the instrument retains the same premium features as the…

Demonstrate plate tectonic principles, plate boundary interactions and the geometry and relative motions of faulting of geologic layers using 3-D manipulative models. Versatile kit contains a Fault Model Set of 5 manipulatives and a Tectonics Sand Layer Model. Use the Fault Model Set to demonstrate…