This series of analog heating mantles includes a case constructed of durable stainless steel and aluminum materials. The temperature level is adjustable up to 400° C. Knitted mantle is made from glass fiber yarn and designed to securely hold round bottom flasks with the top half of the flask…

This series of digital heating mantles includes a built-in stirrer function. Separate knobs control the temperature level up to 400° C and stirring speed up to 800 rpm. The external probe allows the temperature of the contents of the flask to be directly measured. Case is constructed of durable…

Thermometers feature 5" long stainless-steel probes. Temperatures are shown on a dial display. Includes protective sleeve with pocket clip. This versatile 38mm (1-1/2") diameter thermometer features molded plastic dial, with temperature ranges of -20° C to +50° C, and 0° to 120° F, in 1°…

Test tube clamp for all sizes of test tubes. Available with and without finger grips in both Brass Wire and Steel wire with a brass finish. Note: Wooden test tube holder can accommodate test tubes from 12mm to 25mm in diameter.

This aluminum top hot plate with stirrer has a powerful, 500W heating element and a 280°; C maximum temperature. The unit automatically stops heating when the maximum temperature is reached. Temperature range is from 0 to 280°; C. Stirring function operates at speeds from 0 to…

Optically true glass with scratch-resistant copper back silvering individual glass mirrors ideal for a variety of optics experiments. Focal lenghts available from 25mm - 300mm.

Flexible, 18swg stranded wire cord with alligator clips at both ends. Alligator clips have protective vinyl sheath.

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

This economical seven piece kit lets you demonstrate the conversion between different forms of energy. It includes four devices for generating electrical energy from mechanical motion (hand generator), chemical energy (batteries), light (solar energy), and wind (windmill) and three devices for…

Quick and easy tools for demonstrating thermal expansion. There are four bar combinations: Brass/Aluminum, Brass/Iron, Copper/Iron, and Brass/ Copper. Since each metal has a different coefficient of thermal expansion, they will create a unique curve when paired with a different metal. Metal bars…

Made from Plate Glass, with carefully ground and polished optical survaces, and cleanly ground edges, these lenses feature a diameter of 38mm - 125mm and focal lengths from 50mm - 500mm.

Thermometer Clamp features adjustable 360° rotating jaw for suspending thermometers. The clamp attaches to rods up to 13mm (1/2") O.D.

This versatile and tough steel inclined plane includes a graduated protractor and an adjustable pulley. Incline is 4" wide x 23" long. Includes a 14oz. Roller that can be used as a vehicle on the plane or as a counterweight. Also includes a pan and cord for masses.

Featured displays of this electronic alarm stopwatch include time (hours-minutes-seconds, with 12 or 24 hour mode option), calendar, 24-hour stopwatch, alarm, hourly chime, 1/100 second chronograph, split time, and total time. It is lightweight, easy to operate, ad comes complete with battery and…

Two identical sized screw cap metal cans (one smooth metal and other painted dull black) to demonstrate the difference in cooling rates of hot water inside the cans due to different surfaces.  The difference in the cooling rates is attributed to the thermal radiation emitted by the two cans. …

This analog hot plate with magnetic stirrer features knobs for electronic variable speed control and electronic variable temperature control. Temperature is safely controlled using the PT sensor. The unit’s heating plate measures 6 inches in diameter to accommodate beakers and flasks up to…

Magnifying Glass with Glass lenses molded into high quality unibody plastic frames.

This mineral test kit is useful for rock, mineral and fossil identification. Kit includes: Hardness scale, dropper bottle, hand lens, glass streak plate, black streak plate, white streak plate, cermaic bar magnet, nail and penny.

Perform quantitative spectroscopy experiments using this good quality yet economical spectrometer. Unit is mounted on a stable base with attached collimator, and rotating telescope platform. Features include a 2.6cm diameter achromatic optical system with a 10x eyepiece and crosshair. A 16cm…

The set contains 6 acrylic lenses: one each of double convex, plano-convex, concavo-convex, double concave, plano-concave, and convexo-concave. Includes an activity guide and a reusable cardboard storage box.

Fresnel Lens with vinyl sleeve is 3 3/8" wide x 2 1/4" tall.The magnifying window is 3 1/8" wide and 1 3/4" tall and has a magnification of 1.25x.

Hook Collar clamps are ideal for suspending pulleys, balances, etc from support rods or cross members. Available for rods up to 0.5" or 0.75".

Graduated in Celsius and Fahrenheit, this thermometer shows temperature ranges of --20°C to +50°C in 1° divisions, and 0° to +120°F in 2° divisions. Thermometers are filled with Toluene mixed with red color. Mounted on a 10" tall wooden base.

United brand bottle top dispensers offer high accuracy at economical prices. Each dispenser is individually calibrated and certified in an ISO 17025 accredited laboratory in accordance with ISO 8655 standards. Five adapters are included with each unit for use with a wide range of bottle sizes. All…

The United Scientific™; Eco-Mix Vortex Mixer has a simple touch-and-go function that makes it easy to use. The compact design saves bench space, yet the mixer is powerful enough to deliver robust vortex mixing at 3000 rpm. Compatible with centrifuge tubes up to 50mL capacity, and can also be…

These autoclavable desiccators are made of polypropylene and polycarbonate and can hold vacuum up to 740mm Hg for 24 hours without any greasing. The PP stopcock has a self lubricating PTFE plug that works to create the vacuum, shut it off and release it. Autoclavable at 120°C for fifteen…

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…

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.

Includes 1 each of 1, 5, 10, 50, 100, and 500 mg weights, and 2 each of 2, 20, and 200 mg weights. Rectangular plastic box with rider and forceps.

A Vigreux column is a type of air condenser where the simple tube has been modified to include an abundance of downward-pointing indentations. This dramatically increases the surface area per unit length of the condenser. Includes a 24/40 connector.

Hardwood half meter stick for use with our Demonstration Balance Support or other laboratory measurement activities.

Utilize the power of your smartphone with this unique Hall’s Carriage. The secure clip holds your smartphone securely for motion experiments. Using an app of your own choosing, you can graph acceleration and velocity. Includes activity guide. Secure clip holds your smartphone securely for…