United Scientific Supplies

Cars, or automobiles, are probably the most common way for transporting humans and goods. They may vary in size and design, but all are defined as motor vehicles that run primarily on roads and have wheels. Cars came into global use during th the 20 century and our developed economies depend on...

Demonstrate moment of inertia using this set of wands and rings. The distribution of mass affects the moment of inertia of an object. The pair of wands both have the same mass and length. However, when the wand with a movable mass has the mass positioned near its end, the wand is much harder to move...

These jumbo sized pulleys are designed for classroom demonstration. The single, double, triple, and quadruple pulleys are all 70 MM in diameter. The pulleys are "open" type-users can run pulley cords through them more easily. Lightweight, low-friction, and deformation-resistant plastic...

Slotted weight set with hanger & case, brass. Includes 1x50g, 9x20g, 1x10g, 2x5g, hanger

A great biology resource! Prepare your own slide specimens with these Microscope Slide Making Kits. The reusable slides can be used time and time again, providing excellent value. Each kit includes 12 slides, 12 cover slips, and a storage box holding up to 25 slides. Choose glass or plastic.

This apparatus demonstrates that light can travel in a near vacuum, but sound does not. The cushioned bottom vacuum jar holds a buzzer with blinking LED lights. As air is evacuated out of the jar, the blinking lights are easily visible but the sound from the buzzer decreases. This provides evidence...

Heavy cast iron triangular bases with black enamel finish include a zinc plated steel rod.

Digital stopwatch with lanyard features split and cumulative time modes, 1/100th second increments, calendar/date display, and an alarm. Includes a LR1130 coin battery.

Dissecting pans are made of durable aluminum with rounded corners. The corners include holes that can be used as tie-down points to hold specimens securely during dissection. Additionally, this rim design enables easy, thorough cleaning compared to traditional dissecting pans. Aluminum construction...

A set of 5 springs with different spring constants. The forces required for a 1 cm extension are 0.25N, 0.5N, 1N, 1.5N, and 2.5N respectively. Pre-stress has been removed for accurate results. With a hook to support a weight hanger and a red arrow to indicate position.

Dropping bottles dispense small uniform drops of liquids when pressed lightly. Made from low-density polyethylene (LDPE).

Transfer (Volumetric) pipettes are manufactured from specially selected, heavy wall machine drawn borosilicate accurate bore glass tubing. They have precision fored jets and bevel ground ends to resist chipping. The graduation marks are in durable white enamel or amber stain; both are resistant to...

This stand is ideal for use with alcohol burners. The base is made from 3/16" stainless steel rod with a plated steel mesh top. The stand can be used in either high (5") or low (4") position.

Set of six of our most popular spoons and spatulas for the laboratory includes one each: 4" blad mounted on a hardwood handle, microspoon with Plastic Handle, Stainless Steel 6" Spatula (one end flat, one end spoon), 6" Stainless Steel Spatula (one end bent, one end flat), 6" Stainless Steel Spatula...

Beaker tongs feature strong zinc palted steel construction with flat riveted joints and vinyl coated sleeves that open to 7". Tongs can handle beakers from 50ml capacity to 1500ml capacity. Overall length is 9.75".

This simple device gives a graphic demonstration of the sun’s radiative energy. A large convex mirror concentrates solar radiation onto a small container of water suspended at the mirror’s focal point. In a few minutes, the water boils. The mirror’s angle is adjustable though...

Disposable culture tubes are manufactured from high quality 5.1 expansion borosilicate glass. Rimless design enables easy plugging using a stopper. Caps not included. Meet USP Type I and ASTM E438, Type I, Class B requirements. Tubes are packaged in shrinkwrapped boxes to keep them particle-free,...

This 12 x 75mm polypropylene test tube has a capacity of 5ml Tube features a round bottom and is autoclavable Sold as a pack of 100 tubes

Demonstrate key electrostatics concepts with this kit. Contains everything necessary to construct two flask form elctroscopes. Detailed manual included experiments using two electroscopes for positive and negative charge studies, and a Faraday's Pail experiment. Kit includes 2 Glass Flasks, 2...

These research grade bottle top dispensers feature a 30mm tread and come complete with five additional adapters (28, 32, 36, 40, and 45mm) allowing laboratories to use them right out of the box. Fully autoclavable and highly accurate.

This friction box is used for coefficient of friction studies when larger loads are required. The 6" x 3.5" x 2.5" box will accommodate a load of 2 kg or more. Smooth sanded wood with two leather strips attached to the bottom. Shipping weight: 0.5 lbs., dimensions: 7.5" x 4" x 3".

Our Radiometer is made from a glass bulb from which much of the air has been removed. Inside the bulb, on a low-friction spindle, is a rotor with 4 vanes. Each vane has one blackened side and one silvered side; one black vane features a white dot in order to count rotations easily. When exposed to...

Polypropylene racks with a three-tier design provide a clear view of the tube contents and convenient insertion and removal of tubes. Racks are packaged unassembled and easily snap into place.  Available in mutiple configurations. 77706 - 13mm x 31 Tubes 77707 - 16mm x 31 Tubes 77708 - 20mm x...

All-in-one pipettes are molded from unbreakable translucent polyethylene. Can be sealed and refrigerated.