3" glass pipet with rubber bulb, straight.
Capacity - 5000g Readability - 2g Pan Size - 14.5cm x 14.5cm Weighing Units - g, oz, lb The Dune series offers all of the necessary features for quick and easy weighing. Every Dune is equipped with an AC adapter, auto calibration through the keypad, low battery indicator, and overload indicator. With its alternate battery operation, splash-proof keypad, and sturdy plastic construction throughout, the Dune delivers accurate readings in the lab or in the field. It's simple to use with only 3 buttons; on/off, unit, and tare. The positive push button feel provides trouble free operation. Weighing units can be changed quickly and the indicator shows which unit you are using. With a choice of power options you can use either the included AC adapter or 6 x AA batteries. An auto-off function saves battery life and helps reduce power consumption.
Capacity - 5000g Readability - 2g Pan Size - 14.5cm x 14.5cm Weighing Units - g, oz, lb The Dune series offers all of the necessary features for quick and easy weighing. Every Dune is equipped with an AC adapter, auto calibration through the keypad, low battery indicator, and overload indicator. With its alternate battery operation, splash-proof keypad, and sturdy plastic construction throughout, the Dune delivers accurate readings in the lab or in the field. It's simple to use with only 3 buttons; on/off, unit, and tare. The positive push button feel provides trouble free operation. Weighing units can be changed quickly and the indicator shows which unit you are using. With a choice of power options you can use either the included AC adapter or 6 x AA batteries. An auto-off function saves battery life and helps reduce power consumption.
Pans are constructed of high-density polyethylene for years of continued use. The units are designed to stack in place or to nest for convenient storage.
Pans are constructed of high-density polyethylene for years of continued use. The units are designed to stack in place or to nest for convenient storage.
Calling all crossing guards! Our Econo Lanyard is the essential tool to streamline your duties. This lanyard offers a practical way to keep your whistle within easy reach, ensuring you're prepared to signal pedestrians and control traffic efficiently. Crafted for durability, this lanyard features a metal J-hook for quick and easy attachment of whistles. An affordable and long-lasting solution to enhance your safety measures at school crossings, intersections, and traffic control points. Keep your focus on safety with this invaluable accessory. Available in 10 colors
ANSI Class 2. Economy Lime Safety Vest. 100% Polyester mesh. Hook & loop front closure. 2 exterior waist pockets and 1 left chest pocket. AwareLite reflective trim. Conforms to ANSI/ISEA 107 standard for design, color and reflectivity.
ANSI Class 2. Economy Orange Safety Vest. 100% Polyester mesh. Hook & loop front closure. 2 exterior waist pockets and 1 left chest pocket. AwareLite reflective trim. Conforms to ANSI/ISEA 107 standard for design, color and reflectivity.
• Lightweight, highly visible polyester mesh
• Adjustable hook and loop front closure
• Elastic side straps
• 1” reflective orange stripes on front and back
• One size fits most
• Does NOT Meet the requirements of ANSI/ISEA107
Lightweight, highly visible lime polyester mesh. Adjustable hook and loop front closure. Elastic side straps. 1" reflective orange stripes on front and back. Does NOT Meet the requirements of ANSI/ISEA 107. One size fits most.
• 1" wide reflective stripes
• Hook & loop front closure
• Elastic side closures for universal sizing
• One size fits most
• Does NOT Meet the requirements of ANSI/ISEA107
Lightweight, highly visible orange polyester mesh. hook and loop front closure. Elastic side straps. 1" reflective silver stripes on front and back. Does NOT Meet the requirements of ANSI/ISEA 107. One size fits most.
Large, easy to read numbers and graduations. -40 degreesC to +50 degreesC.
Large, easy to read numbers and graduations. -40 degreesC to +50 degreesC.
Serves to demonstrate Boyle's Law. Shows what happens when gases are subjected to increased pressure. The plastic syringe, with solid wood base and platen, is constructed so that the calibrations denoting interior volume read right side up. As masses of bricks, books, or other heavy objects are increased, the gas in the syringe is compressed to smaller and smaller volume. The kit includes: 1 Syringe Cylinder w/ Cap, 1 Syringe Piston, 1 Base, 1 Platen.
Serves to demonstrate Boyle's Law. Shows what happens when gases are subjected to increased pressure. The plastic syringe, with solid wood base and platen, is constructed so that the calibrations denoting interior volume read right side up. As masses of bricks, books, or other heavy objects are increased, the gas in the syringe is compressed to smaller and smaller volume. The kit includes: 1 Syringe Cylinder w/ Cap, 1 Syringe Piston, 1 Base, 1 Platen.
Strong plastic construction. These Buzzers are an essential electrical part for use in Physics electrical circuits and Sound experiments and other general lab use. Buzzer dia. 1.15" (29mm) x 0.58" (14.8mm) thick. Base 1.89" (48mm) long, with two holes 0.13" (3.48mm) dia. for mounting. Connecting wire 4" (100mm) long.
Strong plastic construction. These Buzzers are an essential electrical part for use in Physics electrical circuits and Sound experiments and other general lab use. Buzzer dia. 1.15" (29mm) x 0.58" (14.8mm) thick. Base 1.89" (48mm) long, with two holes 0.13" (3.48mm) dia. for mounting. Connecting wire 4" (100mm) long.
Consists of an inner aluminum vessel 75mm x 50 mm, height x diameter, and an outer aluminum vessel 100 mm x 75 mm, height x diameter, with a bakelite cover with two terminals, which are cross-drilled at their lower ends and are fitted with a heating coil, the upper ends are fitted with standard sockets for electrical connections. The bakelite cover has holes for thermometer and a stirrer. Supplied complete with stirrer but without thermometer.
Consists of an inner aluminum vessel 75mm x 50 mm, height x diameter, and an outer aluminum vessel 100 mm x 75 mm, height x diameter, with a bakelite cover with two terminals, which are cross-drilled at their lower ends and are fitted with a heating coil, the upper ends are fitted with standard sockets for electrical connections. The bakelite cover has holes for thermometer and a stirrer. Supplied complete with stirrer but without thermometer.
An introductory kit providing students with materials to "breadboard" various electrical circuits such as: series and parallel circuits, investigating conductions and insulators, making electromagnets. Contents include: holders and batteries, bulb holders and bulbs, switch, carbon rod, iron rod, plastic insulator, coil of wire, "breadboard" circuit board, jiffy clip leads.
An introductory kit providing students with materials to "breadboard" various electrical circuits such as: series and parallel circuits, investigating conductions and insulators, making electromagnets. Contents include: holders and batteries, bulb holders and bulbs, switch, carbon rod, iron rod, plastic insulator, coil of wire, "breadboard" circuit board, jiffy clip leads.
Includes everything you'll need to show that electricity can act very much like a magnet. One large nail, one five-foot piece and one 1 1/4-foot piece of plastic insulated wire with end connectors, one knife-edge switch, two screws, one 3" x 4" x 1" wooden block and complete instructions. Battery not included.
An economy model planetarium. Moon, Earth and Venus globes are rotated, revolved separately by hand. The twilight zone ring enables young students to better understand the nature of dawn and dusk. Underarm chain drive keeps the North Pole pointing to Polaris, the North Star. Durable, colorful plastic with brass and steel parts. Complete quality planetarium at a low price.
This introductory set contains the following: Amoeba, Paramecium, Hydra plain, Sponge spicules, Planaria, Tricinella in muscle, Earthworm cross section of anterior and posterior, Clam gill, Daphnia, Fruitfly, Housefly head, insect trachea.
This 60" plastic tape has inches on one side and centimeter/ millimeter scale on the other.
This 60" plastic tape has inches on one side and centimeter/ millimeter scale on the other.
Observe the effects of 3 doses of gamma irradiation on seeds and compare with control seeds. Rye grass and mung bean seeds have a short germination period, so students can see the effects within 48 hours and the experiment can be completed within 2 weeks. Kit contains enough for 30 students to work individually.
Standard Conical shaped flasks, in seven sizes, borosilicate (heat resistant) glass, marked with graduations for approximate volumes, used in the laboratory for mixing, storing and heating of liquids. Stopper Size: 1 (not included)
Standard Conical shaped flasks, in seven sizes, borosilicate (heat resistant) glass, marked with graduations for approximate volumes, used in the laboratory for mixing, storing and heating of liquids. Stopper Size: 1 (not included)
Wide-mouth, conical flask made of polypropylene. Comes with a screw cap, or can be used with a stopper. Chemical resistant, and autoclavable to 135º C. Graduated in easy to see green print. Sold in packs of 12.
Porcelain. Glazed inside and outside except bottom outside surface.
Porcelain. Glazed inside and outside except bottom outside surface.
Porcelain. Glazed inside and outside except bottom outside surface.
45 specimens, approximately 1.5" x 1.5", includes 15 each of igneous, sedimentary and metamorphic rocks. Each category of rock is well represented and forms an integrated classroom study unit. Grades 6-12. Ages 11-18.
Visualize the potential contamination of groundwater. Construct mini-groundwater simulation models showing the movement of a simulated, colored pollutant. Determine under what conditions contamination occurs from a variety of sources such as spill, farms, and buried tanks and how polluted groundwater eventually reaches the drinking water supply. In the process, students learn about the water cycle, water quality, ppm and ppb pollutant contamination, porosity of soils, and other related concepts. Grades 6-10.