This benchtop microcentrifuge is ideal for quick spin-downs of microcentrifuge tubes. Includes a multi-rotor that accommodates twelve microcentrifuge tubes in 0.2ml, 0.5ml, 1.5ml, or 2ml capacities, or four 8-well, 0.2ml PCR strips. Safety lid with lock stops centrifuge quickly when opened.…

These clear non-vacuum desiccators are manufactured from borosilicate glass and include a borosilicate glass lid with a molded-in knob. Clear glass provides excellent visibility and can be autoclaved. The rims of the desiccator and lid are ground glass and require greasing before use to create an…

This student force table is a complete set that features a dual scale, allowing students to take readings either clockwise or counterclockwise, four complete weight sets (each with brass slotted weights, 2 x 5g, 4 x 10g, 4 x 20g, and a 20g brass weight hanger), four pulleys with clamps and two sets…

HM2000 series combination mantles are ideal for repetitive extracting, refluxing, and distillation applications. Units feature space saving built-in electronic power regulator knobs. Available in 3-place and 6-place configurations for maximum safety and convenience. Each unit includes 1 each…

Excellent for holding small objects, The jaws on these burette clamps open from 15mm to 45mm (0.5" to 1.75"). The clamp attaches to rods up to 13mm (0.5"). O.D. Jaws can be rotated and locked at any angle. Available with the jaws coated or uncoated.

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 50mm Hg, or air pressure of about 2 atm (standard atmosphere). Pump features a removable cap and elastic valve to provide quick vacuum…

Magnifying Glass with a glass lens, metal frame, and bakelite handle.

Clear Acrylic Trapezoid, with one flat surface frosted to enhance visibility. Bases are 89mm and 40mm. Faces measure 47mm and 35mm

This clamp features plastic coverd spring jaws. Accepts burettes up to 35mm OD, and support rods up to 0.5" OD. Available as a single or double burette clamp.

Use this convenient set to perform various pulley demonstrations. The durable 20cm x 15cm base is fitted with a capstan and a 61cm tall aluminum support rod. Also includes a 20cm crossbar with clamp.  Includes activity guide. Contents Wooden base with capstan, hook and rod…

This unique hand generator is an easy yet effective way to teach how AC and DC electricity is produced. Banana plugs can be inserted into the different connectors to change from AC to DC electricity. The unit has a clear base for easy demonstration of connections. Includes an activity guide.

Zinc plated steel extension rings. Rod diameter is 5/1", overall length is 12".

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…

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…

1216T40 (DCSET4): This set includes one each of acrylic, pine, nylon, and aluminum cubes packaged in a poly bag. Includes a reference table showing density values of individual specimens. 1216T39 (DCSET10): This set of 1" cubes includes one each of acrylic, oak, pine, poplar,…

Accurate, non-rolling hexagonal masses are made of steel, and feature a durable black oxidized finish. Available in both customary and metric sizes.

Plastic Insulated Copper wire is 22 gauge, supplied in 100 foot rolls and available in three colors. Bare Nickel Chromium Wire is supplied in 4 ounce spools. Enameled Copper Magnet Wire is supplied in 4 ounce spools. Soft Bare Copper Wire is available in 4 ounce or 1 lb spools.

These autoclavable desiccators are made of polypropylene (PP) and polycarbonate (PC) and can hold a vacuum up to 740mm Hg for 24 hours without any greasing. Autoclavable at 120°C for 15 minutes. The top dome, molded in rigid and transparent PC, gives a crystal-clear view of the sample. The…

Our Multichannel Micropipettes are recommended for a wide variety of applications such as ELISA, molecular screening, kinetic studies, and DNA Amplifications. Our Variable Volume Micropipettes feature built-in tip ejectors and autoclavable tip cones. They work on a click stop digital system, are…

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…

Glass prepared microscope slides, supplied in a plastic  case. A collection of slides specific to the study of botany. Set of 25. 1.    Chlamydomonas, E, 2.    Spirogyra, vegetative filaments, E 3.    Spirogyra, conjugation, E 4.  …

Convenient, economical package of materials to start investigating electricity concepts. Assortment includes: 6 Round Plastic Bulb Holders, 3 Knife Switches, 6 Battery Holders with Fahnestock Clips, 10 Fahnestock Clips, 1 Wire Stripper, 3 Wires with Alligator Clips, 18"; Assorted Colors, 3 Wires…

This is a quick and clean way to visualize magnetic fields. The demonstrator is a transparent acrylic case that holds iron filings suspended in a fluid of appropriate viscosity. When it is placed over a magnet, the field pattern can be viewed directly, or it can be placed on an overhead projector…

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…

The calorimeters hold up to 200 ml of liquid and the digital thermometers measure temperatures between 50°C and 150°C with a precision of 0.1°C. The aluminum bridge has a cross sectional area of 122 mm² and is about 200 mm long between the liquid reservoirs (the exact length can…

A fine instrument for determining the radius of curvature of spherical surfaces such as mirrors and lenses. Its micrometer screw is graduated to measure displacement as small as 0.01mm. The instrument has two brass plates and three steel legs. A flat glass plate is provided for support while…

Each set contains a stamped steel base and rod along with 2, 3, 4, or 5 cast iron rings with clamps. Sets are shipped in specially designed boxes.

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…

Made of steel wire, zinc plated. Stand has a heavy wire gauze top. Overall height is 5" to accommodate all sizes of burners. Available with or without a ceramic center on wire gauze top.

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

An entire optics set at a great price. Includes everything you need to demonstrate basic principles of light and color. Comes in a reusable storage box. Includes 1 Doubel convex lens (38mm diameter, glass), 2 acrylic equilateral 25mm x 50mm prisms, 1 double concave 38mm glass lens, 1 plain 38mm…

Economical laser pointers are useful for many optical experiments. Lasers operate on a push-button switch, are housed in a rubberized aluminum pen-style case, and include a pocket clip. Laser Pointer features both Red/Green beams. The 6" long x 0.5" diameter Class 3R Red laser pointer has a maximum…