United Scientific Supplies

Floating microtube racks are ideal for thawing, cooling, or incubating samples in water or ice baths at a wide range of temperatures from -70C to 100C.  Tubes are supported below the lip while conical ends are immersed in water.  Racks feature a handle for easy removal from water bath as...

The Advanced Projection Ripple Tank is a comprehensive system for demonstrating basic wave phenomena using water waves. A horizontal glass plate is mounted in a watertight frame with foam beaches around the perimeter to suppress unwanted wave reflections. This tank is mounted on three tall legs with...

This product effectively demonstrates the laws of reflection and refraction. The 16cm diameter acrylic water tank has a 360 degree scale and a moveable arm carrying a laser activated by a push-button. Thumb screws on the side of the laser harness can be adjusted to finely position the laser beam....

The red color of these wash bottles provides a visual indicator that they may contain hazardous liquids.  Constructed of low density polyethylene, these bottles include a built-in delivery tube.

Rubber Stoppers packaged in convenient 1lb bags. Available in solid, 1 hole, and 2 hole versions.

The Newton’s Rings Apparatus consists of a plano-convex lens on top of a flat glass plate, held together by a plastic frame. The pressure between the lens and the plate can be adjusted by means of three thumbscrews.

These bottles provide an excellent option for storage of reagents and other materials in the laboratory. The square shape is designed to optimize shelf space. Available in three different sizes, these bottles feature polypropylene caps, are autoclavable, and provide good chemical resistance.

3-Way adapter has a 75° angle sidearm with inner joints on the sidearm and bottom and an outer joint on the top. Inclined adapter has a 105° angle sidearm with outer joints on the sidearm and top and an inner joint on the bottom. Both adapters have 24/40 joints.

Manufactured of strong polycarbonate, these boxes are ideal for compact storage of 2.0 or 5.0ml cryogenic vials.  Boxes can be used at temperatrues from -196°C to +121°C and are autoclavable.  Transparent lids have a numbered grid for sample identification.  Frosted surface...

The vertically-aligned set of LEDs make an easy and dramatic demonstration of the relationship between the color and wavelength of light. The spectral range of each LED can be investigated with a spectrometer, or just viewed for comparisons with each other and with the “white” LED...

A set of 8 dissection instruments in a hard plastic case. Contents: Dissecting Scissors(1) Dissecting Forceps(1) Scalpel with Replaceable Blade, No. 22 (1) Teasing Needle, Plastic Handle, Straight (1) Teasing Needle, Plastic Handle, Curved (2) Dropping Pipet (1) Transparent Vinyl Ruler, 6" (1)...

Providing excellent clarity and strength, this pear-shaped funnel has a leakproof threaded screw cap. The Polypropylene stopcock, fitted with a self-lubricating PTFE plug, is push-fitted to the stem of the funnel. Not Graduated.

Store goggles, glasses, or other small lab products using the clear box. It can be used on a desktop or can be mounted on a wall. Includes a lid to keep the box free of dust or contamination.

Vividly demonstrate the interaction of a magnet and an induced current. As electrons flow in a wire, they create a magnetic field. When this current-carrying wire is near a permanent magnet it causes magnetic repulsion and motion is created. The apparatus works on 3V to 6 V DC and has a switch to...

This four-digit timer is designed to be used with air tracks, free fall apparatus, and other equipment. It is microprocessor-controlled and offers eight programmed functions to record counts, time intervals, periods of oscillation, accelerations, acceleration due to gravity, and velocities in...

Tall form clear quartz glass crucibles are ideal for applications that require ashing of samples. Quartz material offers low expansion, dimensional stability, and thermal shock resistance. Can withstand a continuous operating temperature of 1050°C (1922°F). Lids are also manufactured from quartz and...

Gooch crucibles have a perforated bottom and include lids. Crucibles are glazed on inner and outer surfaces except for the outside bottom and rim. Used for determination of total suspended solids. Thermal Shock Resistance - average coefficient of expansion from 20° C to 200° C is 3.56 x...

Precision apparatus for measuring Planck's Constant includes a mercury discharge lamp, vacuum photocell, set of mercury-line interference filters, and control unit. High quality amplifier yields results for h to better than 3%. This product has a 90 day lead time. Market standard for this type...

Large Periodic Table of the Elements measures 47" wide and 35.5" tall is easily visible from every corner of the classroom. Durable material will withstand heavy classroom use. Elements included up through UUO #118.

This kit allows students to explore the electrical properties of different combinations of electrode materials using safe, everyday chemicals such as soda, vinegar, and fruit juice as electrolytes. The set contains everything needed for the experiments except the electrolytes. Voltage, current, and...

The Loop the Loop Track demonstrates centripetal acceleration and the transformation of potential energy into kinetic energy. Included is a sturdy base with rubber feet, metal ramp with loop, 16mm steel ball and 19mm steel ball. The metal ramp with loop features a net at the end of the loop to...

This high quality model is great for anatomical study. The hand is mounted on a sturdy plastic base, and the fingers are flexible enough to demonstrate movement. Model is 8.5" tall and 4" wide.

Explore basic mechanics concepts with this all-metal, freestanding apparatus, designed for both durability and ease of use. The plane is wide enough to accommodate standard friction blocks or a Hall’s carriage with a smartphone attached, and its walled construction prevents objects from falling off...

This 400ml borosilicate glass beaker features an attached handle and a smooth rim. The molecular structure of caffeine is enamled in white on one side, and the other side has standard beaker graduations.