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.
Odd-shaped magnets make odd-shaped magnetic fields. This kit has seven very powerful neodymium rare earth magnets in seven unusual shapes. When placed near or on top of the included magnetic field viewer containing iron filings, the iron filings line up in amusing patterns. The 2.5" x 3.5" viewer is sealed so the filings won't spill or stick. Shapes included: bar, star, heart, disk, triangle, ball and ring. With 3/4" x 4" keeper and instructions.
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Zinc plated steel extension rings. Rod diameter is 5/16" overall length is 12".
Oversized normal model with cut-away to show inner anatomy, including optic nerve and disc, macula, retina, central retinal artery and vein. Lens and cornea are removable. Model size: 5" x 3" x 4". Card size: 6-1/2" x 5-1/4"
• Batteries: 8 C cells
• Bell Diameter: 235 mm
• Color: Grey and Blue
• Features: Built in siren, coil microphone attached
• Length: 410 mm
• Power: 20W
• Range: 1000 yards
• Weight: 3 Kg
1000 yd range. Mic hooks on to rear for standard use. May be shoulder mounted without mic. Solid state amplifier. Signal alarm for warning alert. Power output: 25 watts peak. Uses 8 "C" batteries (order below).
Box of 100, Smooth. Medium Flow rate and retention. Suitable for 95% of laboratory qualitative studies.