General

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

Our Magnetic Stir Bars are constructed of high quality magnets coated with PTFE. Along with individual sizes of polygon, octagon, and egg-shaped, two convenient assortments are available. Stir Bar retrievers also available. (1 per EA)

Extra long spring (21cm when compressed) allows you to magnify your wave demonstrations to illustrate traveling waves and wave patterns. Included stand prevents tangling or damage to super spring during storage. Includes activity guide. (1 per EA )

Removable concentric rings provide an adjustable worksurface for various applications. Cast iron ring with black enamel finish. Detachable zinc plated legs are interchangeable for use with various sizes of rings. Rings and legs are also available individu (1 per EA)

United Scientific® Extension Thermometer Clamp (1 per EA )

Plated steel collar clamps feature thumbscrews and hooks for suspending pulleys, balances, etc. from support rods or crossbars. (1 per EA)

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

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

Manufactured with high-quality 304 Stainless Steel, United Scientific REUZ™ (“re-use”) Offset Spoon Spatulas include an offset spoon on one side and a spatula on the other side. Useful in laboratory settings where easily sterilized stainless steel is desired. Constructed of a single piece of stainless steel with a polished surface to resist contamination. Intended for use with most powders, granules, pastes and liquids. Available in sizes from 155 mm to 395 mm. Sold individually. REUZ™ products from United Scientific promote sustainability in all laboratory environments. REUZ™ products from United Scientific promote sustainability in all laboratory environments. (1 per EA )

Manufactured with high-quality 304 Stainless Steel, United Scientific REUZ™ (“re-use”) Offset Spoon Spatulas include an offset spoon on one side and a spatula on the other side. Useful in laboratory settings where easily sterilized stainless steel is desired. Constructed of a single piece of stainless steel with a polished surface to resist contamination. Intended for use with most powders, granules, pastes and liquids. Available in sizes from 155 mm to 395 mm. Sold individually. REUZ™ products from United Scientific promote sustainability in all laboratory environments. REUZ™ products from United Scientific promote sustainability in all laboratory environments. (1 per EA )

Heavy wire test tube rack includes a durable epoxy coating. Holds up to 36 tubes. (1 per EA)

Our deluxe line of 3-prong extension clamps are constructed of pressure die-cast zinc alloy and are chrome-plated. Clamps open to about 3", have a recommended maximum grip size of about 2.25", and feature double keyed spring-type adjustment screws. Boss h (1 per EA)

Pinchcock tubing clamps are made of zinc-plated steel wire. (1 per EA)

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )

Stainless steel scoop with one pointed end for handling small amounts of chemicals. Length 6-1/2" (16.5cm). Also available with 5" long hardwood handle. (1 per EA)

Stainless steel scoop with one pointed end for handling small amounts of chemicals. Length 6-1/2" (16.5cm). Also available with 5" long hardwood handle. (1 per EA)

STAINLESS STEEL SPATULA, 4" (ONE END FLAT, ONE END SPOON) (10 per PK )

A convenient assortment pack of 36 tubing connectors, compatible with a variety of tubing sizes and connections. Autoclavable. Pack includes: * 3 L-shaped connectors for 6mm tubing * 3 L-shaped connectors for 8mm tubing * 3 L-shaped connectors for 10mm tubing * 3 T-shaped connectors for 6mm tubing * 3 T-shaped connectors for 8mm tubing * 3 T-shaped connectors for 10mm tubing * 3 Y-shaped connectors for 6mm tubing * 3 Y-shaped connectors for 8mm tubing * 3 Y-shaped connectors for 10mm tubing * 3 four-way connectors for 6mm tubing * 3 four-way connectors for 8mm tubing * 3 four-way connectors for 10mm tubing (36 per PK )

Clamp with Hook can be rotated and locked in any position. Ideal for supporting suspended thermometers, drying tubes, etc. The clamp attaches to rods up to 13mm (1/2") O.D. (1 per EA)

Aluminum rod, measuring 24 inches long and 1/2-inch in diameter. Designed for use with United Scientific Lattice Lab Systems. (1 per EA)

These sturdy polypropylene scoops are available in a variety of sizes and as a complete set of seven scoops. Capacities are molded into the top of each scoop for easy reference. The PP material is autoclavable and will not rust or corrode. (12 per PK )

STAINLESS STEEL SPATULA, 6" (15 CM), ONE END FLAT, ONE END TAPERED (10 per PK )

Rugged, autoclavable centrifuge tube boxes can be used at temperatures of -90°C to 121°C. Racks hold 36 each 15ml tubes, or 16 each 50ml tubes, and feature a clear lid for easy identification of contents. (4 per PK )

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )