Supplies

Designed for repeated laboratory use, United Scientific™ CrystalClear™ crystallizing dishes are made from industrial grade borosilicate 3.3 glass. Dishes are autoclavable, with excellent chemical resistance, a low temperature gradient, and can withstand high temperatures and thermal shocks. (6 per PK )

Our deluxe line of two prong burette clamps are made of pressure die casted zinc alloy and are chrome plated. Adjustable to hold up to 60mm OD burettes, these clamps feature a spring-type adjustment key. Extension rod is 8.25" long, 5/16" OD, with an over (1 per EA)

Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic green neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Sold as one-pound bags (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 )

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)

Natural Rubber Rubber Policeman for stirring rods (12 per PK )

Designed for repeated laboratory use, United Scientific™ CrystalClear™ crystallizing dishes are made from industrial grade borosilicate 3.3 glass. Dishes are autoclavable, with excellent chemical resistance, a low temperature gradient, and can withstand high temperatures and thermal shocks. (3 per PK )

Good quality glazed porcelain. Acid and alkali resistant. Sold as eaches. (1 per EA)

Mixing bowls are constructed from 304 stainless steel for increased heat resistance. Bowls feature rounded corners, and polished mirror surface for easy mixing and cleaning. Can withstand temperatures up to 800°C (1472°F). Meets NSF standards. (1 per EA)

Replacement 300ml base designed for use with Vacuum Filter Holder Set with Fritted Glass Support Base (FHFT47). (1 per EA)

Replacement 300ml PTFE-coated glass base designed for use with Vacuum Filter Holder Set with PTFE Coated Funnel and Base (FHPT47). (1 per EA)

Boiling, round bottom flasks with ground glass joints. Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the la (24 per CS )

These pipettes are made from borosilicate glass in compliance with ASTM specification E-969. Color-coded. Individually serialized and certified. Calibrated to deliver. Printed with durable amber markings. (5 per PK )

Pack of six pear-shaped recovery flasks with 100ml capacity, ideal for use with rotary evaporators. These heavy-walled borosilicate glass flasks feature a square bead and a single neck with a ground glass 24/40 joint. The top opening is designed for easy recovery of reaction products with spatula. Flask bottom fits standard heating mantles. (6 per PK )

These Type 3 serological pipettes are made from borosilicate glass and comply with USP standards. Color-coded. Calibrated to deliver. Printed with durable amber markings. (6 per PK )

Made from heavy borosilicate glass, these cylinders have a beaded top with a pouring spout and a round base for stability. (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)

Tall form crucibles include lids. Crucibles are glazed on inner and outer, surfaces except for the outside bottom and rim. (6 per PK )

Short form beakers with raised graduations, molded in polypropylene, are clear, autoclavable and have good chemical resistance. All sizes have handles for convenient lifting. (12 per PK )

Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the laboratory. (24 per CS )

Durable, machine-blown body. Heavy beaded tubing neck. Flasks feature a sharp graduation line and large white block letters. A plastic snap cap is included. Meets Class A specifications per ASTM E-288. Batch certified. (1 per EA)

Boiling, flat bottom flasks with ground glass joints. Our boiling flasks are made from low-expansion borosilicate glass. Feature uniform wall thickness for superior mechanical strength and shock resistance. Ideal for boiling, heating and mixing in the laboratory. (24 per CS )

Non-flammable glass wool for use in general laboratory and industrial applications. Used for filtering out fine precipitates where filter papers are not suitable and the intertwined borosilicate glass fibers provide thermal insulation. (1 per EA )