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 )

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 )

Flexible stainless steel blade with rounded end, mounted in a polished wood handle. (1 per EA)

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)

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)

Steel rod, zinc-plated extension support rings. Rod diameter 5/16", overall length 12" for all sizes. (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 )

Polycarbonate racks feature ergonomic design for easy handling. Provides good chemical resistance. Autoclavable and withstands temperatures from -135°C to 135°C. Includes molded-in numbers and letters for easy identification of test tubes. (4 per PK )

Stamped steel bases with black enamel finish feature 2 tapped holes. Hole at center of the shorter side is for standard ring stand use. Hole at center of the longer side is for applications such as titrations, specific gravity determinations, etc. Includ (1 per EA)

Stamped steel bases, with black enamel finish. Includes a removable, zinc-plated steel rod. Bases and Rods are also available individually. (1 per EA)

Steel rod, zinc-plated extension support rings. Rod diameter 7 mm (0.27”) and the straight rod portion of each is 7.25” (184 mm) long. Open support rings are ideal for use with funnels, boiling flasks, and separatory funnels. (1 per EA )

Economical yet very durable racks that are submersible, autoclavable, and easily stack when empty. Made from a special blend of polypropylene (PP) that makes them sink in a water bath and maintain their stability, even in agitated water. The top tier features an alphanumeric grid reference. Available in white, but can be special ordered in various colors. Shipping weight (for pack of 6) 2.0 Lbs., Package dimensions: 15" x 10" x 2". (6 per PK )

Polypropylene cross-shaped connectors with serrated ends are ideal for leak-proof tubing connections. Autoclavable. (12 per PK )

Individual CoolSafe Chamber for 0.5 mL tubes, 91 holes (5 per CS )

CoolSafe Complete System; 96 holes for 0.2 mL tubes or PCR plates (also includes 4 x 1.5 mL holes and 6 x 0.5 mL holes) (5 per CS )

Thermal Transfer Cryo-Babies on 1 in. Core Roll, 1.05 x 0.5 in. (27 x 13 mm), White, for 0.5 mL tubes (10000 per CS )

Thermal Transfer Cryo-Babies on 1 in. Core Roll, 1.5 x 0.5 in. (38 x 13 mm), White, for 1.5 to 2 mL tubes (10000 per CS )

Thermal Transfer Cryo-Tags on 1 in. Core Roll, 2 x 0.25 in. (51 x 6 mm), White, microplates (10000 per CS )

Tough-Spots for Laser Printers, 1/2 in. (13 mm), Rainbow, 12 Across - 16 Down (19200 per CS )

Tough-Spots on Roll for Handwriting, 3/8 in. (9.5 mm), Assorted, 5-Across, for 0.5 mL tubes (25000 per CS )

Tough-Spots on Roll for Handwriting, 1/2 in. (13 mm), Orange, for 1.5 mL tubes, 1000/roll (1 per EA )

Tough-Spots on Roll for Handwriting, 1/2 in. (13 mm), Pink, for 1.5 mL tubes (5000 per CS )

Tough-Spots on Roll for Handwriting, 1/2 in. (13 mm), Silver, for 1.5 mL tubes (1000 per PK )

Tough-Spots on Roll for Handwriting, 3/8 in. (9.5 mm), Orange, for 0.5 mL tubes (5000 per CS )