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.
Porcelain. Glazed inside and outside except bottom outside surface.
• Spiked Ice Grippers for safety on ice
• Make icy conditions easier to navigate
• 360 degree spike pattern provides more push off and lateral grip
• The patented Ice Diamond carbide spikes
• Spikes are integrated into the open/close split rubber tread for improved traction
• Unique support on heel strap provides easy adjustment
• Easy to put on and take off.
• Small/Medium fits mens 3-7, womens 5-9.
• Large/X-Large fits mens 6-14, womens 10+
For safety on ice, these easy-on spikes make icy conditions easier to navigate. The patented Ice Diamond carbide spikes are integrated into the open/close split rubber tread for improved traction. Unique support on heel strap provides easy adjustment, and are easy to put on and take off. Ideal for visitors or offiice personnel who occasionally walk into areas where ice and snow may cause a safety concern. Small/Medium fits mens 3-7, womens 5-9. Large/X-Large fits mens 6-14, womens 10+.
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".
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".
• Heavy duty 1" galvanized steel construction.
• Features easy-swivel front casters.
• 8" rubber rear wheels
• Holds most coolers up to 10 gallons in size
• Comes with basket to hold cups, etc.
• Use indoors or out.
• Measures 53" H x 27" W x 26' D.
• Cooler not included
• Lifetime warranty!
• Made in the USA!
Lifetime warranty! Made in the USA!. Not a cheap import!. Heavy duty 1" galvanized steel construction. Features easy-swivel front casters. 8" Rubber rear wheels. Cart enables you to transport and stage. Holds most coolers up to 10 gallons in size and 16" outside diameter. Comes with basket to hold cups, etc. Use indoors or out. Measures 53" H x 27" W x 26' D. Cooler not included U.S. Pat. No. D581,124
Due to high demand, this item can take 2 to 4 weeks for delivery.
• Heavy duty 1" galvanized steel construction
• Features easy-swivel front casters
• 10" All-terrain pneumatic rear wheels
• Holds most coolers up to 10 gallons in size
• Comes with basket to hold cups, etc.
• Use indoors or out
• Measures 53" H x 27" W x 26' D
• Cooler not included
• Lifetime warranty!
• Made in the USA!
Lifetime warranty! Made in the USA!. Not a cheap import!. Heavy duty 1" galvanized steel construction. Features easy-swivel front casters. 10" All-terrain pneumatic rear wheels. Cart enables you to transport and stage. Holds most coolers up to 10 gallons in size and 16" outside diameter. Comes with basket to hold cups, etc. Use indoors or out. Measures 53" H x 27" W x 26' D. Cooler not included U.S. Pat. No. D581,124
Due to high demand, this item can take 2 to 4 weeks for delivery.
• 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).
• Batteries: 6 C cells
• Bell Diameter: 180 mm
• Features: Built in siren, volume control, pistol grip, carrying strap
• Length: 355 mm
• Power: 16W
• Range: 600 yards
• Weight: 2.25 Kg
600 yd range. High impact ABS bell. Volume control, signal alarm switch. Power output: 16 watts peak. Uses 6 "C" batteries (order below).
• Range: 800 Yards
• Power: 16 Watts
• Feature: Built In Siren
• Features: Siren, Pistol Grip With Volume Control Carrying Strap
• Batteries: 8 C Cells
• Bell: ABS Bell 230mm Diameter
• Length: 410mm
• Weight: 2.7kg
800 yd range. Powerful signal alarm. Adjustable volume control. Signal alarm switch. Power output: 20 watts peak. Uses 8 "C" batteries (order below).
Box of 100, Smooth. Medium Flow rate and retention. Suitable for 95% of laboratory qualitative studies.
This borosilicate (heat resistant) glass conical shaped flask with side arm is used in filtration processes.
100 ml Flask uses a size 4 stopper
150 ml Flask uses a size 5 stopper
250 ml Flask uses a size 6.5 stopper
500 ml Flask uses a size 6.5 stopper
This Choking Poster (updated for 2013), explains in great detail how to help an adult who is choking in a step by step process. This first aid poster breaks down instructions on how to help a choking victim. If a victim is conscious, this poster illustrates in great detail instructions for following 3 steps to provide emergency help. If a victim becomes unconscious, there are instructions to follow steps 1-4. Illustrations are sharp and colorful; the text is large making reading easy. This adult choking first aid poster is critical to have on hand at any restaurant, school, child care facility, or business. 18" x 24".
The Child Choking Poster by Bruce Algra (years 1-8), updated for 2017, shows and explains how to help a child who is choking in a step by step easy to follow process. The top of the poster shows the 3 critical steps to take when the child is choking and conscious. The bottom of the poster shows what to do if the child becomes unconscious (or is unconscious already). Illustrations are sharp, colorful and text is large to make it easy to read. This is an important life saving reference for restaurants, schools, child care facilities, business, or any place children are present. 18" x 24".