Low friction modular pulleys snap together with interlocking brackets. Connect up to 6 for an exciting lab in simple machines. Tough ABS plastic brackets, 2" diameter plastic sleeves.
Low friction modular pulleys snap together with interlocking brackets. Connect up to 6 for an exciting lab in simple machines. Tough ABS plastic brackets, 2" diameter plastic sleeves.
Same as above but double and Plastisol coated jaws. Opening 3/8" to 1 3/8".
Will hold 2 burettes 7 1/4" apart. Stamped steel. Zinc plated. For burettes 6mm to 16mm.
Will hold 2 burettes 7 1/4" apart. Stamped steel. Zinc plated. For burettes 6mm to 16mm.
Stamped steel. Zinc plated. Jaw opening 3/8" to 1 3/8".
Stamped steel. Zinc plated. Jaw opening 3/8" to 1 3/8".
Same as above with plastisol coated jaw.
Same as above with plastisol coated jaw.
Watch caterpillars change into butterflies right before your eyes with our award-winning Butterfly Garden! We've completely redesigned this classic educational wonder after 33 years on the market. Raise 5 Painted Lady butterflies while learning all about metamorphosis. See the caterpillar's transition as it matures, changes into a chrysalis, and finally emerges as a Painted Lady butterfly! Absolutely safe to release into the environment. Includes colorful habitat, certificate for 5 butterfly larvae with special food, and complete instructions. Three butterflies are guaranteed to be perfect specimens. Please allow approximately 3 weeks for your larvae to develop. Available only in the Continental U.S. and Alaska. Ages 4 and up. 10" X 10".
Clamp features strong malleable iron frame that is painted to reduce corrosion.
Ths C-clamp with a 2 inch jaw opening features strong malleable iron frame that is painted to reduce corrosion.
Clamp features strong malleable iron frame that is painted to reduce corrosion.
Ths C-clamp with a 4 inch jaw opening features strong malleable iron frame that is painted to reduce corrosion.
Clamp features strong malleable iron frame that is painted to reduce corrosion.
Ths C-clamp with a 6 inch jaw opening features strong malleable iron frame that is painted to reduce corrosion.
Chain is attached, locks securely on the post under the ball top and is made up of two components which snap together. Reversing one component turns C-hook into an O-ring for greater chain security.
Chain is attached, locks securely on the post under the ball top and is made up of two components which snap together. Reversing one component turns C-hook into an O-ring for greater chain security.
A set of premium quality pH 7.01 and 10.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna€™s line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. 5 sachets of pH 7.01 and 5 sachets of pH 10.01 with each containing 20 mL of buffer.
Color coded label for easy pH buffer value identification
Accuracy of +/- 0.01 pH @ 25°C
Temperature chart of the actual pH value at various temperatures printed on each bottle
A set of premium quality pH 4.01 and 7.01 calibration buffer solutions. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna€™s line of calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI77400P is for 5 sachets of pH 4.01 and 5 sachets of pH 7.01 with each containing 20 mL of buffer.
For use with Checker 1 pH Meter
Color coded label for easy pH buffer value identification
Accuracy of +/- 0.01 pH @ 25°C
Temperature chart of the actual pH value at various temperatures printed on each sachet
Use this aluminum bucket with the Overflow Can for Archimedes' Principle, density and specific gravity experiments. Includes detachable aluminum handle. Measures 4" I.D. x 3" H.
Use this aluminum bucket with the Overflow Can for Archimedes' Principle, density and specific gravity experiments. Includes detachable aluminum handle. Measures 4" I.D. x 3" H.
Borosilicate glass centrifuge tube with conical bottom. 15 ml capacity. Graduated.
Borosilicate glass centrifuge tube with conical bottom. 15 ml capacity. Graduated.
Durable, lightweight plastic instrument, designed for whiteboards/chalkboards. Made of white polystyrene and features handle for ease of use. 180 degrees marked with intervals of 1 degrees, 20" base,10" height.
Durable, lightweight plastic instrument, designed for whiteboards/chalkboards. Made of white polystyrene and features handle for ease of use. 180 degrees marked with intervals of 1 degrees, 20" base,10" height.
Soft vinyl frame with four plastic ventilators for maximum indirect ventilation. Rubber headband for more comfort! Meets Z87.1 ANSI Standards and OSHA requirements.
Sized just right for grade school aged children ages 5 to 9! Two vertical 1 3/8" prismatic reflective stripes on front and back. Hook and loop front closure. Elastic sides. Lime with orange reflective. Made in the USA.
Tired of hunting through your capes looking for the right one for your event? Now you can use one cape for any event! This youth size cape is blue with red trim and has a clear pocket on the front where you can insert a 5"W x 3.75"H sign - Perfect for Index cards. Sized for ages 6-10 / Grades K-3. 12"W x 15.5"L with 4.25" Elastic on the sides.
• Front and back of the vest is 12 inches across from side to side
• Measures 31 inches from bottom hem on the front across the shoulders to bottom hem on the back
• High quality N-series mesh.
• 3M Scotchlite reflective material high intensity tape.
• Hook and loop front closure
• Elastic sides
• Two 1 ½” horizontal stripes front and back
• Black binding around the edges
• Made in the USA
• Available in 4 sizes
High quality lime N-series mesh. 3M Scotchlite reflective material high intensity tape. Hook and loop front closure. Elastic sides. Two 1 1/2" horizontal stripes front and back. Black binding around the edges. Made in the USA. Available in 4 sizes.
• High quality N-series mesh.
• 3M Scotchlite reflective material high intensity tape.
• Hook and loop front closure
• Elastic sides
• Two 1 ½” horizontal stripes front and back
• Black binding around the edges
• Made in the USA
• Available in 4 sizes
High quality orange N-series mesh. 3M Scotchlite reflective material high intensity tape. Hook and loop front closure. Elastic sides. Two 1 1/2" horizontal stripes front and back. Black binding around the edges. Made in the USA. Available in 4 sizes.