Support rings with clamp, cast iron.

Our meters are mounted in black plastic cases. Meters have a scale length of 75mm, offer +/- 2.5% accuracy and come with 5-way binding post and external calibrating screw. Meters are not protected against prolonged or significant overload. Stackable for storage.

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.

This comprehensive and economical set is based on a mechanical vibration generator and a sine wave signal generator and includes a support system anda range of accessories.  The imprtant basic types of mechanical vibrations and waves can be investigated.  Includes demonstrations…

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…

Rugged Plastic Pulley with deep V groves mounted on a metal clamp. Th sheave is 50mm in Diameter. Clamp can be mounted on surfaces up to 35mm thick.

This set of 15cm long x 2cm wide strips can be used in chromatography studies. Sold as a pack of 100 strips.

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.

Strong, excellent quality laboratory support jack, made of aluminum and stainless steel. Vertical height to 26cm;15cm x 12cm top and base plates. Also available with removable 20cm x 20cm platform and a 45cm long support rod.

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…

Recommended for grades 3 to 8, this set is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with the three types of levers, single and double pulley systems, and shows the characteristics…

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

This attractive and economical Stirling Engine is both engaging and a great educational tool. It runs by exploiting the heat flow generated by the small temperature differences between room temperature and a container of hot water or ice. The Stirling Engine is an External Combustion Engine (the…

Plastic conical joint clips are size 24, designed to securely hold 24/40 joint size glassware together.  Note: Clips shipped are blue

Good quality pipettors designed for easy and precise pipetting. Pumps feature a lever for quick release, and forward or backward wheel movement. The soft elastic chuck has a threaded collar to tightly grip glass or plastic pipettes. Easy to clean. Each size color coded.

This attention-getting demonstration of magnetic repulsion uses a clear acrylic plate that keeps a spinning axle oriented above magnets built into the base of the apparatus. With a simple twist of your fingers, you can start this levitating magnet spinning and kick start a classroom discussion. The…

Plastic Battery holder available with Fahnestock Clips, wire leads, or fahnestock clips and jointers.

The United hand held generator offers features and quality similar to much more expensive brands currently offered in the science education market. This 6V DC Generator can deliver up to 400mA current. The generator comes equipped with a polarity coded plug in lead with alligator clips. The clear…

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

An essential accessory for experiments with the popular Bicycle Wheel Gyroscope as well as for demonstrating the effect of moment of inertia on rotational motion (the “spinning skater effect”), this economical Rotating Plate spins freely due to its heavy duty ball bearing axle. Features…

This series of analog 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. Case is constructed of durable stainless steel and aluminum materials. Knitted mantle is made from glass fiber yarn and…

United Scientific™ serological pipettes feature black graduations for precise reading and accurate dispensing. Reverse graduations show volume removed or remaining on all pipettes larger than 1 mL. Negative graduations provide additional pipetting volume. Manufactured from transparent USP…

Good quality, economical hand operated air/vacuum pump is easy to operate. Each squeeze of the pump delivers approximately 15ml, and can be used to create vacuum of 15mm Hg, or air pressure of about 2 atm (standard atmosphere). Pump features a gauge along with a removable cap and elastic valve to…

Equilateral prisms, made from high quality clear acrylic sheet with highly polished surfaces.

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…

The Ultrasonic Grating Apparatus is both a unique demonstration of the interaction of longitudinal sound waves and transverse light waves and also a method for the precise determination of the speed of sound in liquids, which is otherwise difficult to do in the undergraduate lab. The core of the…

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…

These mini pipettes include a two step plunger that facilitates super blow out from the tip. Can be used for reverse pipetting and repetitive pipetting, fully autoclavable. Color coded plungers. Individually calibrated per DIN 12650

Five pounds of black wax for dissecting trays.

Glass prepared microscope slides, supplied in a plastic  case. A collection of slides specific to the study of plant anatomy. Set of 20. 1.    Helianthus (sunflower), young 2.    Prunus (cherry), leaf, TS and old root 3.    Monocot, epidermis, E.…

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 unique set includes matched components to provide a convenient Soxhlet extraction workstation. The setup includes a heating mantle with stirrer, 250ml borosilicate glass boiling flask, 100ml borosilicate glass Soxhlet extractor, 300mm borosilicate glass Allihin condenser with glass connectors,…