Graduation Interval: 1 ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Graduation Interval: 1 ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Neutral glass. Uniform thickness. Available in 3 sizes.
Borosilicate glass. Uniform thickness.
This is a standard borosilicate glass funnel with uniform thickness. The top outer diameter measures 54mm and the stem measures 50mm. Glass funnels are mostly inert and make it easier to pour without making a mess.
Polypropylene Space saving, graduated bottles are ideal for long-term storage of samples. Easy grip caps can be wired down for security. Head space between cap and insert plug can be used for confidential notes.
24" x 36" full color laminated poster.
This is an especially important poster because it presents the new Sibley-Ahlquist bird classification system. Based on recent DNA studies, this system uses cladistics to reconstruct the evolutionary family tree. Who would have thought that birds as diverse as flamingos, eagles, and penguins would end up in the same clade? However, this revolutionary new system has been widely accepted by North American ornithologists and has made the previous bird classification system obsolete. Although this poster shows true clades, the scientific community continues to use the order names, which are cited.
This is a truly beautiful poster, one greatly appreciated by bird lovers. It certainly enhances the decor of their home or office, yet it presents information that has even greater value. All the bird clades are explored, and all of the many classification changes resulting from the transition from orders to clades are explained. This information has never before been published in such a concise and convenient form, making this poster an essential reference for anyone seriously interested in birds.
24" x 36" full color laminated poster. This is an especially important poster because it presents the new Sibley-Ahlquist bird classification system. Based on recent DNA studies, this system uses cladistics to reconstruct the evolutionary family tree. Who would have thought that birds as diverse as flamingos, eagles, and penguins would end up in the same clade? However, this revolutionary new system has been widely accepted by North American ornithologists and has made the previous bird classification system obsolete. Although this poster shows true clades, the scientific community continues to use the order names, which are cited. This is a truly beautiful poster, one greatly appreciated by bird lovers. It certainly enhances the decor of their home or office, yet it presents information that has even greater value. All the bird clades are explored, and all of the many classification changes resulting from the transition from orders to clades are explained. This information has never before been published in such a concise and convenient form, making this poster an essential reference for anyone seriously interested in birds.
This full-color, authoritative look at the behavior and biology of birds is packed with information on:
• How birds fly, migrate, nest, sing, raise their young, and more
• Ways to observe birds as they go about their daily lives
• How to attract and care for backyard birds
A perfect complement to identification guides, this Golden Guide from St. Martin's Press is destined to become a staple in the library of every bird lover and student.
Made of the finest sheet glass. Individually selected for uniform quality. Precision ground edges. Guaranteed precleaned. Approximately 1 mm thick. Size 75mm x 25mm.
These pre-cleaned slides are 75mm x 25mm, 1.0mm to 1.2mm thick, and are packaged in boxes of 72. Made of quality sheet glass, with ground edges.
Excellent reference collections and a valuable aid in identifying and comparing common and rare rocks and minerals. These mounted collections display common minerals and igneous, sedimentary and metamorphic rocks. Specimens are 1/2"-1". Rocks and Minerals Study Guide included. Grades 5-12. Ages 10-18.
Excellent reference collections and a valuable aid in identifying and comparing 35 common and rare rocks and minerals. These mounted collections display common minerals and igneous, sedimentary and metamorphic rocks. Specimens are 1/2"-1". Rocks and Minerals Study Guide included. Grades 5-12. Ages 10-18.
6 commonly known sedimentary rocks. Sedimentary rocks are formed from preexisting rocks through the processes of erosion, followed by compaction or chemical precipitation. Each generous specimen is 1 1/4" to 1 1/5" and is contained in a resealable zip lock bag with a label. Grades 5-12. Ages 10-18.
6 commonly known sedimentary rocks. Sedimentary rocks are formed from preexisting rocks through the processes of erosion, followed by compaction or chemical precipitation. Each generous specimen is 1 1/4" to 1 1/5" and is contained in a resealable zip lock bag with a label. Grades 5-12. Ages 10-18.
An economy collection of 6 commonly known igneous rocks. Igneous rocks are formed by the cooling of molten rock, either magma or lava. Each generous specimen is 1 1/4" to 1 1/5" and is contained in a resealable zip lock bag with a label. Grades 5-12. Ages 10-18.
Learn what air pollution is and how weather and geography affect it. Conduct experiments to test the air that you breathe everyday for pollutants. This kit comes complete with instruction manual, the chemicals and apparatus needed to conduct several air quality tests.
Demonstrate rotation, revolution, and orbit in 3 dimensions with this durable, washable solar system set.
Teach the position, order, size, and shape of the planets and sun
Also great for creating an out-of-this-world playroom or bedroom
Each colorful planet (and sun) inflates easily
Loops included for easy hanging
This unique solar system set turns any room into an intergalactic experience
Includes
8 planets with hanging hooks, Pluto, Sun, Earth’s Moon, convenient foot pump, activity guide with fun planet facts, Repair kit
•Measure 5”-23” in diameter:
•Age 5+
•Grade K+
Demonstrate rotation, revolution, and orbit in 3 dimensions with this durable, washable solar system set. Teach the position, order, size, and shape of the planets and sun. Also great for creating an out-of-this-world playroom or bedroom. Each colorful planet (and sun) inflates easily. Loops included for easy hanging. This unique solar system set turns any room into an intergalactic experience. Includes: 8 planets with hanging hooks, Pluto, Sun, Earth’s Moon, convenient foot pump, activity guide with fun planet facts, Repair kit. Measure 5”-23” in diameter: Age 5+. Grade K+.
The Navicade was introduced to the market in 2005 and has really taken off as a replacement for barrels. The narrow design and offset handle makes picking up and setting up extremely quick and easy.. Unique Handle Design. Slim Style - 49.25" H x 7.6" W. Weighs only 3 lbs. (without base). Molded-in holes for mounting light and ropes. Can be used to rope work area. Stackable for easy transportation or storage. Snug fitting bases will not be knocked over. Accepts up to four (4) bands of 4" reflective sheeting. Navicade is designed for easy placement and pick-up from a truck bed. Made of durable low-density polyethylene. Federal Highway Administration Approved. NCHRP 350 Compliant.
• One of the most visible and space efficient barricades available
• Takes up half the space of traditional barricades
• Designed to withstand repeated impacts with little or no damage
• Has a recessed panel with engineering grade reflective sheeting
• Measures 8"w x 36"h with 30 lb base
• Gemstone side wall provides strength and durability
• Oversized handle with comfort grip
• Flashing light mounting receptacle
• Made of low density polyethylene
• Federal Highway Administration Approved with HAS-10 / WZ-89
• NCHRP Compliant
The Gemstone is one of the most visible and space efficient barricades available. It takes up half the space of traditional barricades, which means less storage space taken and minimal footprint during use. Designed to withstand repeated impacts with little or no damage to vehicles or unit. Stackable with 30 pound base. Has a recessed panel with engineering grade reflective sheeting. Measures 8"w x 36"h. Gemstone side wall provides strength and durability. Flashing light mounting receptacle. Picking up and transporting (even with light attached) is a breeze because of its large handle with comfortable grip. Made of low density polyethylene. Federal Highway Administration Approved with HAS-10 / WZ-89. NCHRP Compliant.
• One of the most visible and space efficient barricades available
• Takes up half the space of traditional barricades
• Designed to withstand repeated impacts with little or no damage
• Measures 8"w x 36"h with 20 lb base
• Gemstone side wall provides strength and durability
• Oversized handle with comfort grip
• Flashing light mounting receptacle
• Made of low density polyethylene
• Federal Highway Administration Approved with HAS-10 / WZ-89
• NCHRP Compliant
The Gemstone is one of the most visible and space efficient barricades available. It takes up half the space of traditional barricades, which means less storage space taken and minimal footprint during use. Designed to withstand repeated impacts with little or no damage to vehicles or unit. Stackable with 20 pound base. Measures 8"w x 36"h. Gemstone side wall provides strength and durability. Flashing light mounting receptacle. Picking up and transporting (even with light attached) is a breeze because of its large handle with comfortable grip. Made of low density polyethylene. Federal Highway Administration Approved with HAS-10 / WZ-89. NCHRP Compliant.
• Engineering Grade or High Intensity Reflective Stripes
• All plastic, economical barricade, that is strong and durable
• Solid wall design: legs and boards are molded in one piece
• Easy to handle, pack, and transport
• Rust free and impact resistant
• NCHRP-350 Accepted, Meets MUTCD Standards
• Dimensions: 24.4"W x 42.6"H
• Weight: 13.2 lbs.
An All Plastic, Injection Molded Barricade with Engineering Grade orHigh Intensity Reflective Stripes. Strong, stackable, and lighter than the average barricade. Easy to handle, pack, and transport. Flashing light mounting receptacle. Rust free and impact resistant. Dimensions : 42.6"H x 24.4"Wide. Weight 13.2 lbs
12" Wide x 13 1/4" 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.
12" Wide x 13 1/4" 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.
Sign meets the Manual on Uniform Traffic Control Devices (MUTCD) specifications for shape, color, dimensions, legend and illuminationn set forth by the Office of Traffic Operations, Federal Highway Administration, U.S. Department of Transportation. 18" x 24" (Yellow).
• STOP/GO 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.
• 18" Steel base
• Sign is printed on both sides.
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 18" steel base that allows the double face sign to be rotated. Sign is printed on both sides. 70" High. Ships small package.
This durable traffic sign is constructed of baked enamel nonrusting heavy gauge aluminum and is designed to provide many years of outdoor use. Sign measure 12" x 18".
This durable traffic sign is constructed of baked enamel nonrusting heavy gauge aluminum and is designed to provide many years of outdoor use. Sign measure 12" x 18".