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). Also available in solid and two-hole versions. Each stopper has its size marked in raised figures. Sold as one-pound bags.
Made of steel wire, chrome plated. Stand has a heavy wire gauge top. Overall height is 5", to accommodate all sizes of burners.
Made of zinc plated steel wire. Stand has a heavy wire gauge top with ceramic center. Overall height is 5in, to accommodate all sizes of burners.
Made of steel wire, chrome plated. Stand has a heavy wire gauge top. Overall height is 5", to accommodate all sizes of burners.
Made of zinc plated steel wire. Stand has a heavy wire gauge top. Overall height is 5in, to accommodate all sizes of burners.
Compact pocket loupe, in a sturdy folding metal case. 10x magnification
Compact pocket loupe, in a sturdy folding metal case. 10x magnification
Glass lens, metal rim with plastic handle.
Round magnifier with 50mm glass lens mounted on a metal frame with bakelite handle. 2.5x magnification.
Introductory level metric micrometer graduated to read up to 25mm in 0.01mm divisions. Comes in a plastic storage case
Introductory level metric micrometer graduated to read up to 25mm in 0.01mm divisions. Comes in a plastic storage case
Easy one hand operation. Rotation of the thumbwheel draws or dispenses the liquid with precision and ease. By depressing the side lever the entire contents can be dispensed rapidly. Accepts glass and plastic pipettes. Color coded for sizes.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.
Stainless steel scoop. One pointed end for handling small amount of chemicals. Scoop length, 6 1/2". 5" long hard wood handle.
Stainless steel scoop. One pointed end for handling small amount of chemicals. Scoop length, 6 1/2". 5" long hard wood handle.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 100 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1/4 pound, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1 ounce, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Multi-Purpose polypropylene molded trays can be used for sterilizing, drying glassware, porcelain ware, and other laboratory supplies. These steam autoclavable trays have tapered walls designed for nesting. 375mm x 300mm x 75mm
Multi-Purpose polypropylene molded trays can be used for sterilizing, drying glassware, porcelain ware, and other laboratory supplies. These steam autoclavable trays have tapered walls designed for nesting. 375mm x 300mm x 75mm
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 50 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 200 gram, non-rolling hexagonal mass is made of steel, and features a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
Made of steel, and feature a durable black oxidized finish. Customary and metric sizes.
This 1/2 pound, non-rolling hexagonal mass is made of steel, and feature a durable black oxidized finish. Hexagonal masses are easy to work with and accurate. Suitable for ages 11+.
For one funnel. Attaches to ring stand to support funnel.
For 14mm-17mm tubes. Holds 50 tubes. 66 drying pins. 44 drying pins. Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".
For 14mm-17mm tubes. Holds 50 tubes. 66 drying pins. 44 drying pins. Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".
For 17mm-20mm tubes. Holds 40 tubes. 55 drying pins. 44 drying pins. Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".
For 17mm-20mm tubes. Holds 40 tubes. 55 drying pins. 44 drying pins. Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".
Automatically turns on at 30 degrees, 60 degrees, or 90 degrees angles. Never needs calibration. 3 second update. Range: -50 degrees to 150 degrees Celsius
Magnetic, polytetrafluorethylene coated. For use with magnetic stirrers.
Two optically ground 1" double convex polished lenses fitted into black plastic threaded lens mount. Screw-in metal tripod stand. Black finish. Magnifies approximately 10 times.
Two optically ground 1" double convex polished lenses fitted into black plastic threaded lens mount. Screw-in metal tripod stand. Black finish. Magnifies approximately 10 times.