Our polypropylene Separatory Funnel Holder accepts support rods between 9.5mm and 12.5mm in diameter. These holders can support separatory funnels as small as 250ml and as large as 2000ml. PRODUCT WARNINGS Our products are not toys . Use in a laboratory or educational setting only. Not…

Thermometers are essential for taking temperatures in the lab. These thermometers have a yellow backing to make graduations easier to read. This thermometer is total immersion and has a range of -20 to 110 deg C. Thermometers are essential for taking temperatures in the lab. These thermometers have…

These polypropylene racks can be disassembled for easy storage when they are not in use. They are autoclavable. Options include: #TTRK-13: 90 Hole Rack for up to 13mm Tubes #TTRK-17: 44 Hole Rack for up to 17mm Tubes #TTRK-20: 21 Hole Rack for up to 20mm Tubes #TTRK-25: 21…

This Law of Resistance Kit comes with everything you need in order to experiment with the resistance of electrical current through different types and sizes of conductor wires. This kit includes two digital multimeters that come with 2 patch cords each, 4 Connecting cords with banana ends (2 Red…

A resonance apparatus is used in the demonstration of standing waves. It can be used to observe the resonance phenomena, the speed of sound in air by exploiting standing waves, resonance effects in longitudinal waves, and resonance points for a certain frequency and their relation with the standing…

Remove moisture and air from tanks and other containers with this hand held vacuum pump. The gauge reads in both centimeters and inches of mercury. The pumping rate is 15ml per stroke and will displace up to 725ml of air. The pump is fitted with a valve to release vacuum. Approximate size: 10 x 7 x 2".

This set comes with two 7cm pucks and two 9cm pucks, as well as four plastic tubes connected to balloons. The balloons and pucks can be put together without any tools. Place them on a smooth surface to experiment with levitation. PRODUCT WARNINGS WARNING: This product can expose you…

Knife switches are used to manipulate how electricity flows through a circuit. The base and the handle of the switch are insulated to allow for handling. Wires are connected to the screw-type binding posts. This knife switch is a double pole, double throw, single pole, double throw, single pole,…

Our digital thermometer can accurately read temperatures between -50°C and 300°C with a 0.1°C distinguishing rate and an accuracy of ±1°C. This thermometer can save the last measurement value and switch between °C and °F. Uses a 357A button cell battery. PRODUCT WARNINGS WARNING: This…

Use this mount to attach any of the other accessories we sell to our Basic and Deluxe optical benches (#OPTBN-BSC and #OPTBN-DLX). PRODUCT WARNINGS WARNING: This product can expose you to chemicals including nickel, lead, and styrene, which are known to the State of California to…

The unit is bigger than standard electroscopes for easy viewing. The leaf is larger and the wide radius of swing provides a visual and sensitive demonstration. The unit also features a built in scale which helps to determine the amount of charge generated. The metal case is strong and resistant to…

Use this kit to explore a multitude of mechanical interations including Archimedes' Principle, Hooke's Law, the Law of Parallelograms, movement on an inclined plane, and more. Instructions included. Kit includes: 1 Weight box 1 Single-Scale with clip 2 S-shaped hooks 1 Wooden…

Our plastic-coated magnet ring set features six different colored magnets. Each ring is approximately 30mm in diameter, with an approximately 10mm hole in the center. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including styrene, which are known to the State of…

The portable butane burner is a great option for any lab because the wide base and low profile provides the burner with a stable footing. The support rings attached at the top, allow you to use the burner as a hotplate for laboratory glassware. The valve and ignition buttons are separate for…

The unit measures the velocity of sound in the air. Partially fill the resonance tube with water and then sound a tuning fork of known frequency at the tubes open upper end of the Resonance Tube. The water level can be adjusted until the air in the tube resonates at the same frequency as the tuning…

The Weather Globe Barometer is similar in design and function of the first barometer created by the Italian scientist Torricelli in 1643. This glass weather barometer can be used to predict weather conditions. Rising water in the tube means bad weather, falling water in the tube means good weather.…

The Dual Light Source Optical Bench - 12V Laser and Halogen is used to study the behavior of light, and to also study the phenomena related to physical processes common to image formation. The bench is a 1m long aluminum track, graduated in millimeters. In the center of the track is the 0mm point,…

Five different metal spokes, aluminum, steel, brass, copper and nickel, extend from a center hub, and are connected to a wooden handle. The hub is heated and the students watch as wax falls from each spoke in the order of conductivity.

The ball is placed on top of the acrylic square, which is positioned on top of an aluminum post. The spring is pulled tight and then released which shoots the square out from under the ball. The balls falls into a concave recession in the post. Similar to pulling a tablecloth out from under a set…

These packs of ultra-thin aluminum foil pieces are sold to replace worn out foil in many electroscopes or to create your own at home. Available in packs of 12 pieces or cases of 120 pieces. PRODUCT WARNINGS WARNING: This product can expose you to chemicals including lead, which are…

The Mechanical Wave Kit helps students explore standing wave patterns at different resonant frequencies. The Mechanical Wave Kit was designed to include everything needed to study wave patterns. This a replacement spring only, that measures .75mm thick wire x 30mm diameter x 60mm length, when compressed.

This high-quality lens and prism set is useful for teaching a wide variety of optical principles. You get three lenses and four prisms. The lenses are polished on all surfaces. Sizes vary from 52mm to 88mm in length. Lenses include double concave, double convex, and semicircular. Prisms include…

These stands have nickel-plated rods, and heavy, corrosion-resistant bases for stability. They come as a set with support rings included. Stamped Steel Base #4-SSS66-R2 : Base [4" x 6"], Rod [18" x 5/16"], 2 Rings [diameter 3", 4"] #4-SSS67-R3 :…

These pulleys are made of black plastic, have a metal housing, and have hooks at the top and the bottom. All wheels are 50mm in diameter except for the smaller wheels on the tandem models. We offer several varieties in both parallel and tandem styles. PRODUCT WARNINGS WARNING: …

The Inertial Balance allows for the measurement of inertial mass. Adding mass to one end increases its inertia and causes it to oscillate at a slower rate. This apparatus allows for the investigation of masses by comparing the oscillation period of a known mass to the oscillation period of an…

Our flat metal electrodes are 18mm by 100mm (approximately 0.75" by 4"). We carry electrodes made from seven different metals: aluminum, brass, copper, iron, zinc, nickel, and tin. Use them in your own experiments with electricity.   PRODUCT WARNINGS WARNING: …

A Fresnel lens is a compact type of lens which was first used in lighthouses. The construction of these lenses allows for a large aperture and a short focal length without the mass that would normally be required. This large Fresnel lens is 2mm thick, 8" by 10" large, and has 3x magnification. …

Use this apparatus to explain Ampere's rule. This demonstration consists of a heavy brass wire attached to a transparent plastic base. It comes with six small compasses and one larger compass. To demonstrate Ampere's rule using this apparatus, arrange the compasses around the wire, attach the wire…

The Hot Plate or Heating Mantle with Magnetic Stirrer is ideal for simultaneous stirring and heating of liquids. The hot plate includes an integrated magnetic stirrer. Two dials allow you to control the speed and the temperature. The support arm holds a thermometer or probe. The speed range is…

A zinc plated, stamped steel clamp with steel thumb screws. Will accept rods up to 3/4" in diameter. The distance between the position of the burettes is 7.25".

C-Clamps are used in the lab for securing support stands to lab benches and for a multitude of other applications. Their frames are made with cast metal painted with corrosion resistant paint. The screw is steel plated. This is a 3" clamp.

Burner tri-pod with cast iron ring and nickel plated threaded legs. Sold individually.