United Scientific Supplies

Machined aluminum cylinder floats in cold water, but sinks in warm water. Measures 5/8" diameter x 3-3/8" long. Weight is 0.5 ounces.

Ideal for precision liquid handling, this 3" Plastic Dropper is the go-to tool for any laboratory or scientific setting. Constructed with high-quality plastic, it ensures durability and longevity, even in the most demanding environments. Its 3-inch length allows for easy handling, while its design...

The inertia balance consists of two platforms connected by a pair of flexible steel arms. One end is fixed to a table and the other end is free to oscillate. As more mass is added to the free end, it will oscillate slower. The period of this oscillation is independent of gravity and depends upon the...

These nickel-plated steel tongs have positive-grip corrugated tips for safely handling dishes in muffle furnaces. Use with crucibles and dishes 1-1/2” (3.8 cm) in diameter or wider.

This ingenious device offers a practical and economical solution for light measurements in a variety of learning situations. Whether measuring environmental light or quantifying an optical experiment, this compact luxmeter meets the need. For most uses, the autoranging feature makes this a...

Flexible, 18swg stranded wire cord with a stackable banana plug at one end and an alligator clip at the other end. Alligator clip has a protective vinyl sheath.

Solid hardwood rack features six 25mm positions and six drying pins. Base measures 0.5" thick. Polished to minimize damage from spills.

This large, autoclavable bottle can be used for storing and shipping chemicals and reagents. The 86 mm diameter opening makes it easy to fill and dispense contents. Bottle features built-in grips on two sides for secure handling . Threads should be totally disengaged before autoclaving.

One of the most important areas in physics is the study of fluids and their fundamental principals. Water and air are the two most important elements for life and both are categorized as fluids. Air motion is what determines the temperature in our rooms. Pipelines are providing water to our homes....

This support rod with bosshead clamp mounts to a variety of support rods up to 3/4” in diameter. The thumbscrew is easy to operate and holds the 8.5” long steel rod securely in a perpendicular position. Specifications: Overall length: 11.5” Rod length: 8.5” Rod diameter:...

Free-running tandem pulleys feature plastic sheaves, plated aluminum frames, and a hook at each end.

Glazed, with spatula on one end and spoon on the other end. Thermal Shock Resistance - average coefficient of expansion from 20° C to 200° C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1050°C. Every batch of porcelain is heat tested in our factory. Glaze - No softening occurs...

This polyethylene rack will hold six test tubes, and has six drying pins. Sides are fully open for clear viewing. Rack has two 30mm and four 20mm holes, and is pre-assembled.

BOD Bottles for incubating diluted samples of clean water, waste water, effluent water, and polluted water during the 5 day biochemical oxygen demand (BOD) test. Bottles are unnumbered and feature a penny head stopper.

These uncalibrated specific gravity bottles are excellent for determining the specific gravity of liquids. The borosilicate bottles have a ground stopper joint for a precision fit. Available in 10 ML or 25 ML sizes.

The Eco-Heat Digital Hot Plate Stirrer is user friendly, easy to read, and provides accurate temperature/stir speed controls. The hot plate stirrer can reach a maximum temperature of 280°C and a maximum speed of 1500 rpm. The die-cast aluminum plate with ceramic coating heats quickly and is...

Compact pocket loupe in a sturdy folding metal case. 10x magnification.

The classic method for demonstrating and measuring the small force experienced by a conductor carrying an electric current in a magnetic field. One half of the balance is placed inside a solenoid. The other half has an adjustable counterweight and can carry light additional masses. When current is...

100 strips each in matching color plastic vials. Individual strips are approximately 2" long and 1/4" wide.

Polypropylene Y-shaped connectors with serrated ends are ideal for leak-proof tubing connections. Autoclavable.

With this kit, students can construct their very own large greenhouse measuring 37x35x25cm and learn about key principles of biology such as photosynthesis through hands-on experimentation. The greenhouse is designed with opening roof flaps that use a gearing system, allowing students to explore a...

Made of silicone rubber and features special grips to prevent containers from slipping. Ideal for gripping hot objects such as beakers, flasks and bottles.

Sturdy, economical, and convenient racks for samples stored in vials. Autoclavabale at 120°C for 20 minutes. Can be stacked when not filled, for easy storage. Each well features a drainage hole at the bottom.

Six 25mm holes, six drying pins, with a 1/2" thick base. Solid hardwood construction. Polished to minimize damage from spills.