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This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. 10cm lens. 6X magnification. Measures 7" x 5 3/4" x 2"
This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. 10cm lens. 6X magnification. Measures 7" x 5 3/4" x 2"

This heavy-duty cart is constructed of 1" galvanized steel and has 10" pneumatic wheels. Will hold up to six of the regular or Jumbo fold-up signs.

43" tall
32" long wheel to wheel
20" wide wheel to wheel
18"x18" inside dimensions

Introduces students to the value of food, its chemical substance and teaches the nature of food stuffs. Experiments: starch test, sugar test, lipids (fat) test, protein test, vitamin C test. Contains: iodine potassium iodide solution, biuret solution, vegetable oil, sudan IV solution. Benedicts mixture A, benedicts B, starch, glucose, absorbic acid, indophenol, protein, test tubes, droppers, instructions and background materials. Grades 5-9.

Today's emphasis on the artificial and natural ingredients of the foods that we eat has placed new emphasis on the chemical composition of that food. Examine the chemical, nature of many familiar food products. Experiments in this module: Presence of sugars, starches, fats and proteins, fruit discoloration, chemical composition of milk, presence of iodine in salt, calcium propionate in bread and the qualitative test for vitamin C and sulfur dioxide.

Refill kit for 09725. Barium Chloride bottle 100ml, Citric Acid 1/4 oz, Dextrose 30cc, Gelatin 30cc, Hydrogen Peroxide 3% bottle 2oz, Ethanol Denatured Alcohol 20, Potassium Iodide 1% solution 100ml, Potassium Thiocyanate 100ml, Sudan IV 2oz, Sulfuric Acid 10% solution 100ml, salad oil 2oz, Benedicts solution 100ml, Iodine .1 normal 4oz, Biuret solution 100ml, Starch Acetic Acid solution 100ml, chemical absorbent pad.

The Intro Kit is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with three types of levers, single and double pulley systems, and shows the characteristics of each machine. Set includes: 1 lever with centimeter scale, 2 pulleys, 1 spring scale, 2 weight hangers, 1 slotted weight set, 1 base and support rod, 1 support rod with clamp, 2 hook collars, 1 pulley cord, 1 manual and disc.
The Intro Kit is ideal for introducing students to the concepts of changing force by levers and pulleys, and the notion of mechanical advantage. The manual describes experiments with three types of levers, single and double pulley systems, and shows the characteristics of each machine. Set includes: 1 lever with centimeter scale, 2 pulleys, 1 spring scale, 2 weight hangers, 1 slotted weight set, 1 base and support rod, 1 support rod with clamp, 2 hook collars, 1 pulley cord, 1 manual and disc.

Digestive System Connective Tissue Human Blood (sm) Nerve Tissue Hemopoetic System Vascular System Human Cheek Cells Epithelial Tissue Muscle Tissue Endocrine System Respiratory System Excretory System Human Hair Fingerprints Human Skin Blood Smear or Blood Stain Textile Fibers
Digestive System Connective Tissue Human Blood (sm) Nerve Tissue Hemopoetic System Vascular System Human Cheek Cells Epithelial Tissue Muscle Tissue Endocrine System Respiratory System Excretory System Human Hair Fingerprints Human Skin Blood Smear or Blood Stain Textile Fibers

Fossil fuels were formed millions of years ago as part of a natural process in which the remains of dead plants and animals were buried and placed under extreme pressure and heat. Coal, oil and natural gas are the most important fossil fuels. But what are they used for, how do we find them and what can we do to preserve our limited supplies? Students will find the answers to these questions and more in Fossil Fuels as they explore these nonrenewable resources of Earth. A fun, hands-on investigation demonstrates a creative alternative to using fossil fuels in the creation of plastic and a visit to an oil platform showcases how this valuable fossil fuel is pumped up from the bottom of the ocean. Part of the Earth Science in Action DVD Series. A Teacher's Guide is included and available online. 23 minutes. Grades 5 to 8.

Fossils are historic blueprints -- remnants of plant and animal life that preceded us. In Fossils, students will examine molds, casts and imprints of various living things, and discover how scientists place the age of these ancient remains and the methods they use to preserve them for future generations. Find out how paleontologists discover fossils and what these discoveries tell us about the past. Take a trip to the Petrified Forest, and examine tree trunks that were turned to stone millions of years ago. A fun, hands-on investigation demonstrates for students how they can create four different simulated environments in order to test each for its ability to preserve remains. Part of the Earth Science in Action DVD Series. A Teacher's Guide is included and available online. 23 minutes. Grades 5 to 8.

Loud, consistent sound every time! Great for crossing guards. The Fox 40 Electronic Whistle features three distinctive tones, and can be aimed in specific directions. The 125 dB electronic whistle provides loud, clear, consistent sound every time you push a button. The hand operation is a hygienic solution that can be used by multiple people. Includes detachable wrist lanyard and 9-volt battery. Great for coaches, teachers and intramural sports! 4 switch three tone function design. Sound Power: 125 dB.

If out of stock, order one of our Windsor Electronic Whistles. 

This item is NON RETURNABLE

Superior Performance combined with Superior Comfort. Ideal for large indoor stadiums, outdoor arenas, on site disaster management, search & rescue! Advanced science and technology makes the Sonik Blast CMG Safety Pealess Whistle the most efficient whistle in its class! Precise whistle chamber calibration assures pure frequency performance; less effort, crisper sound. Flawless patented pealess whistle emits distinct louder pitch without a lot of effort. Superior clear loud blast can be heard over long distances and intense ambient noise. Cushioned Mouth Grip provides additional comfort and is perfect for reliably holding the whistle in the mouth in wet conditions. Design: 2-chamber/4 resonators; pealess + Cushioned Mouth Grip (CMG). Sound Power: Exceeds 120 dB.

Better Grip. Better Control. Better Protection. This whistle is the same as the Classic FOX whistle, but has an added CMG (Cushioned Mouth Grip). The Classic CMG is ideal for those who need to hold the whistle in their mouth for extended periods of time. From sports officials to lifeguards and crossing guards, the innovative thermoplastic CMG provides superior grip and protection for your teeth.
Better Grip. Better Control. Better Protection. This whistle is the same as the Classic FOX whistle, but has an added CMG (Cushioned Mouth Grip). The Classic CMG is ideal for those who need to hold the whistle in their mouth for extended periods of time. From sports officials to lifeguards and crossing guards, the innovative thermoplastic CMG provides superior grip and protection for your teeth.

• Quality tested and ensured for maximum durability
• Designed with only the toughest, roughest users in mind
• Flawless, consistent and reliable
• No moving parts to freeze, jam or deteriorate
• The harder you blow, the louder the sound
• Sound will be heard up to a mile away
• 3-chamber pealess whistle
• Chambers are designed to self-clear when submerged in water
• Sound Power of 115dB
• Made in USA
• Available in 9 colors

The Fox 40® Classic® is the standard choice referees and coaches at all levels, rescue professionals and general safety worldwide. The famous Fox professional whistle is not affected by moisture (it has the same shrill tone even after immersing in water). Will be heard above ambient noise, loud crowds, the roar of engines, breaking waves and thundering gale-force winds. Carriers great distances outdoors with ultra shrill tone.Available in 9 colors.

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

A very ecconomical apparatus to demonstrate that light and heavy objects fall at the same rate / accelaration in a vacuum. Apparatus consists of a 36" (910mm) long x 2.25" (55mm) diameter, transparent tube with a stopcock mounted in a rubber stopper on one end, and a solid rubber stopper on the other end. Supplied complete with a 13" long vinyl tubing for connection to a vacuum pump (not supplied), a metal disc and a feather.
A very ecconomical apparatus to demonstrate that light and heavy objects fall at the same rate / accelaration in a vacuum. Apparatus consists of a 36" (910mm) long x 2.25" (55mm) diameter, transparent tube with a stopcock mounted in a rubber stopper on one end, and a solid rubber stopper on the other end. Supplied complete with a 13" long vinyl tubing for connection to a vacuum pump (not supplied), a metal disc and a feather.

12" x 12" Cotton Friction Pad.
12" x 12" Cotton Friction Pad.

12" x 12" Silk riction pad.
12" x 12" Silk friction pad.

12" x 12" Wool friction pad.
12" x 12" Wool friction pad.

Hard rubber, ebonite friction rod with rounded edges about 11 Inch (280mm) x 0.47 Inch (12mm) Length x Diameter. Measurements are approximate.
Hard rubber, ebonite friction rod with rounded edges about 11 Inch (280mm) x 0.47 Inch (12mm) Length x Diameter. Measurements are approximate.

12" Hollow glass friction rod. Approximately 1/2" in diameter.
12" Hollow glass friction rod. Approximately 1/2" in diameter.

12" Solid plastic friction rod. Approximately 1/2" in diameter.
12" Solid plastic friction rod. Approximately 1/2" in diameter.

Vertebrate skeletal system (amphibian). Learn about the backbone and body structure of amphibians. Sealed in resin, making it easy to observe, handle, and store. 5.3" x 3.5" x 1.4". Weight: 500g.

• 100% polyester 150D oxford with PU coating
• Zipper and snap front closure
• Length for sizes from 50" to 53" in .05" increments
• Mesh lining
• Detachable and stowable hood
• Two exterior slash pockets with rain guard
• Vent holes under each arm
• Available in 2 colors and 7 Colors

100% polyester 150D oxford with PU coating. Zipper & snap front closure. 50" length. Mesh lining. Waterproof with sealed seams. Detachable hood w/hood storage in collar. 2 exterior slash pocket with rain guard. Vent holes in under arms. AWARELite reflective trim.

For 22mm-25mm tubes. Holds 30 tubes. 44 drying pins Great visibility and very compact. Constructed of polyethylene, is autoclavable and extremely stable. Size is about 10" x 4" x 3".