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
This 3" wide barrier rope is ideal for sectioning off hazardous areas. Strong durable plastic.
Chain accessories for our plastic chain. These master links have a UV protectant added to keep the colors bright and maintain the integrity of the plastic for five years of use. Set of 2. Available in 3 colors.
Convert any 24" x 36" A-frame sign into a 2-sided message board sign; displays 7 lines of copy. Contains: 2 large (24" x 36") white sign face with letter tracks, 1 - Set of 314 - 4" black letters and 4" red numbers and symbols.
• The Multi-Color baton
• 13" lighted area
• Flashes red, green & blue.
• Durable and water resistant
• Batteries last up to 100 hours.
• Visible up to 3000 yards away
• 100,000 hours of run time.
• Six (6) functions
The Multi-Color Light Wand has a lighted area of 13 inches and flashes red, green and blue. This is one of our more popular items with law enforcement as the blue light sets them apart from others at any scene. Durable and water resistant units. Batteries last up to 100 hours. Bright, colored LED lights are visible up to 3000 yards away and good for over 100,000 hours of run time. Baton has six (6) functions: Red flashing, Red steady, Green flashing, Green steady, Blue flashing and Blue steady.
These 4" wide Vinyl, pressure-sensitive, die-cut arrows come ready to apply. Sold in rolls of 100 in 5 colors.
12 3/4" Wide x 10 1/2" Long Printed on One Side These directional reinforcement devices give supplemental standard warnings and directions creating safer traffic control in the school area. Installs in seconds and firmly locks in place. Reusable, All-weather ABS plastic with UV. Used by thousands of schools, cities and utility companies.
This durable traffic sign is constructed of baked enamel nonrusting heavy gauge aluminum and is designed to provide many years of outdoor use. Has 3M Scotchlite reflective sheeting for high visibility day or night. Sign measure 12" x 18".
Sodium acetate, lab grade, anhydrous, powder - 500g.
Cobalt chloride crystals are commonly used in classrooms for chemistry experiments and demonstrations, primarily to study chemical properties and investigate reactions involving moisture and hydration. The most notable uses include:
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Indicator for Humidity and Hydration: Cobalt chloride is a popular indicator for moisture because it changes color based on its hydration state. In its anhydrous form, cobalt chloride is blue, and it turns pink when it absorbs water. This property makes it ideal for demonstrating reversible chemical changes and teaching about hydration and dehydration reactions.
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Le Chatelier’s Principle Demonstrations: Cobalt chloride can be used to illustrate Le Chatelier's Principle. By adding water or applying heat to the crystal, students can observe the reversible color change, demonstrating shifts in equilibrium due to changes in temperature or the presence of a reactant.
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Testing for Water Presence: Cobalt chloride paper, which is made using the crystals, is used in chemistry and environmental science labs to detect water vapor in various gases or liquids.
Due to its potential toxicity and the fact that it can cause skin irritation, cobalt chloride should be handled with proper safety measures, including wearing gloves and protective eyewear.
These 25ml to 1000ml beakers are molded in polypropylene, have excellent clarity and very good chemical resistance. These autoclavable beakers have prominently raised graduations on the outer surface. Pouring a solution is easy because of its tapered spout.
Maximum Use Temperature = 135°C
Acid resisting sheeting, very flexible and lightweight. Accepted as a standard lab apron for years. Cut to provide ample comfort and protection from laboratory reagents. Reinforced at points of strain. Cotton tapes at waist and neck. 27" x 36".
Heat resistant glass stirring rods with rounded ends. Pack of 12.
5mm, 8 inch long heat resistant stirring rod made of soft flint glass. They are essential for mixing and stirring chemicals and liquids. Both ends of each rod are fire-polished and rounded, so they don't hurt hands and are easy to operate. Pack of 12.
Partial Immersion, Double Scale Range -20/110 degrees C and 0/230 degrees F, Scale: 1 Degree C, 2 Degree F, 300mm Length Partial immersion is best for most applications. These thermometers are calibrated to read correctly when only 3" of the stem is immersed in the liquid being measured. Total immersion thermometers are calibrated for use when the entire liquid column is totally immersed in the substance being measured and should be used under those circumstances. All of our thermometers are made to SAMA specifications for ranges and accuracy. In addition, each of our thermometers has a number of extra quality features built into each one: REINFORCED BULBS, to prevent breakage, RING TOPS, for submersion, NON ROLL CAPS, SCALES PRINTED INTO THE GLASS, rather than on the surface so they never wear off.
Partial Immersion, Double Scale Range -20/110 degrees C and 0/230 degrees F, Scale: 1 Degree C, 2 Degree F, 300mm Length Partial immersion is best for most applications. These thermometers are calibrated to read correctly when only 3" of the stem is immersed in the liquid being measured. Total immersion thermometers are calibrated for use when the entire liquid column is totally immersed in the substance being measured and should be used under those circumstances. All of our thermometers are made to SAMA specifications for ranges and accuracy. In addition, each of our thermometers has a number of extra quality features built into each one: REINFORCED BULBS, to prevent breakage, RING TOPS, for submersion, NON ROLL CAPS, SCALES PRINTED INTO THE GLASS, rather than on the surface so they never wear off.
U.S. and Metric scale, 6" and 150mm. Graphics may vary.
Standard flashlight sized bulb with threaded base.
Standard flashlight sized bulb with threaded base.
• Use one vest for any event!
• Clear pocket on the back where you can insert a 7.5" x 3.25" sign.
• Choose from one of our 8 stock inserts or order your own custom signs
• Comfortable cotton trim
• 3" hook & loop front closure
• 3/4" elastic side closures for universal sizing
• One size fits most
Tired of hunting through your vests and capes looking for the right one for your event? Now you can use one vest for any event! This one size fits all mesh orange vest has a clear pocket on the back where you can insert a 7.5" x 3.25" sign. Choose from one of our 8 stock inserts or order your own custom signs (minimum 12 ea.). Comfortable cotton trim. 3" hook & loop front closure. 3/4" elastic side closures for universal sizing. One size fits most.
3.5" incentive buttons. Yellow on Blue.
12 3/4" Wide x 10 1/2" Long Printed on One Side These directional reinforcement devices give supplemental standard warnings and directions creating safer traffic control in the school area. Installs in seconds and firmly locks in place. Reusable, All-weather ABS plastic with UV. Used by thousands of schools, cities and utility companies.
This durable traffic sign is constructed of baked enamel nonrusting heavy gauge aluminum and is designed to provide many years of outdoor use. Has 3M Scotchlite reflective sheeting for high visibility day or night. Sign measure 18" x 18".
• STOP/SLOW reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• Sign is printed on both sides.
This heavy-duty 18 inch diameter aluminum sign is visible from one hundred yards away, has bold 6 inch high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Sign is printed with STOP on one side and SLOW on the other side. 70in High.
Order Heavy-Duty Rain Ponchos HERE
Outside Diameter: 19mm, Height: 170mm, Graduated Interval: 0.5ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 19mm, Height: 170mm, Graduated Interval: 0.5ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Flat on one end, spoon on other end.
6 inch stailess steel spatucla that is flat on one end, spoon on other end.