Encased in a transparent acrylic case which allows full view of the movement. The action can be demonstrated with the help of a rubber bellow which increases the pressure when squeezed. Supplied complete with rubber bellow.
This pump features a painted steel barrel, steel valve assembly, and a wooden handle. Both in and out ports are equipped with hose connectors, for use with vacuum experiments as well as to generate pressure. Length 14", barrel diameter 1", shipping weight 1 lb.
This pump features a painted steel barrel, steel valve assembly, and a wooden handle. Both in and out ports are equipped with hose connectors, for use with vacuum experiments as well as to generate pressure. Length 14", barrel diameter 1", shipping weight 1 lb.
Bourdon type mounted on brass pillar with nozzles for in and out connections 3/8" O.D. Heavy cast iron base for stability. Calibrated 0-30 inches of Hg / 0-750mm of Hg. Used for Vacuum Experiments.
Bourdon type mounted on brass pillar with nozzles for in and out connections 3/8" O.D. Heavy cast iron base for stability. Calibrated 0-30 inches of Hg / 0-750mm of Hg. Used for Vacuum Experiments.
Huge, metal construction. Baked shoving hammertone finish. Shows that pressure of a liquid depends on the depth/height. Measures 16 1/2" from bottom of base to top of cylinder
Designed and developed to be a lightweight B.O.D. carrier. For storage, incubation and handling of reagent B.O.D. bottles from 55-70mm.
• Made of high density polypropylene
• Chemically resistant
• Heat resistant
• Sturdy, Heavy duty construction 13 1/8" x 6 3/4" x 6 1/4" 12 pcs
Designed and developed to be a lightweight B.O.D. carrier. For storage, incubation and handling of reagent B.O.D. bottles from 55-70mm. Made of high density polypropylene. Chemically resistant. Heat resistant. Sturdy, Heavy duty construction. 13 1/8" x 6 3/4" x 6 1/4" 12 pcs
Loved by kids for more than 20 years, this best seller got better! Perform astounding feats of magnetism as you playfully explor magnetic forces, motion, and stability. Integrates geometry and art too discuss shapes, positions, planes, symmetry, and more. Fourth edition includes additional coins plus a whopping 44 activities. Ages 8+/Grades 3+. Set includes: 2 super strong magnets encased in stainless steel, 32 newly-minted British pennies plus a bonus US penny, and an activity booklet packed with magnet facts, penny history, and 44 activities.
Set includes 6 stages of development in separate jars. . .3 day, 4 day, 6 day, 12 day, 15 day and hatching stage.
• 100% polyester fabric with matching color trim
• Hook & loop front closure
• White 1” wide reflective material (White vest uses lime reflective material)
• Upper right chest pocket with pencil/pen division (5” wide x 5” tall)
• Inside lower right patch pocket (5.5” wide x 5.75” tall)
• Non-ANSI Compliant
Incident command vests come in 12 different colors, making them easy to identify staff and crew by job, team or rank during school events, workshops or emergencies. Just assign a different color to each group. Each vest has clear plastic card holders on the front and back to hold 4.25" x 11" (back) and 3" x 5" (front) cards, so you can label each vest any way you choose. Vest is100% polyester fabric with matching color trim. Hook & loop front closure. White 1" wide reflective material (White vest uses lime reflective material). Has an upper right chest pocket with pencil/pen division (5" wide x 5" tall). Inside lower right patch pocket (5.5" wide x 5.75" tall). Non-ANSI Compliant.
Lightweight solid polyester front with Ultra-Cool mesh shoulders and back. 4-point breakaway. 4-season adjustability allows for accurate sizing in any weather, even over bulky coats. Two 1" wide high performance reflective material with contrast. Brilliant Trim reflective edging improves low light visibility. Convenient left mic tab holder. Handy left chest badge holder & right chest name tag holder. Left chest pencil/pen pocket. Inside large lower patch pocket (when not in use, the vest folds into convenient storage pouch).
This Medium/X-Large size Security Public Safety Vest has a solid lime and black lightweight polyester front area with Ultra-Cool mesh shoulders and back. This is a high visibility safety vest with an enhanced 4-point breakaway design which offers fast removal and also acts as a safety feature by preventing snags on debris, heavy equipment or machinery. Convenient all-season adjustability provides a comfortable and proper fit all year. The split design with contrasting colors makes identification easy when working in crowded environments. Reflective edging by Brilliant Trim enhance low-light visibility. Features include: ANSI/ISEA 207 compliance, Double 1-inch Vizlite reflective silver stripes and lettering, microphone clip/tab holder on left chest to enhance communication, pencil and/or pen pocket on left chest, and one large inner left lower pocket. The pocket doubles as a unique storage pack for the vest when not being worn. This is the ideal high visibility safety vest for policemen and other police officials when working in dangerous low light areas.
It’s time to start mixing things up! In this pretend STEM scenario, you are a chemist for a bath and body products company and it’s your job to make and test different cosmetic products. Use the tools in your laboratory to employ different scientific techniques and essential chemistry principles to make soaps and bath bombs. Try out different additives to affect the color, smell, and other qualities of the products you make.
Real science and pretend play come together in this activity-filled kit that can be used alone or as an extension of the Ooze Labs Chemistry Station (a Parents’ Choice Silver Honor winner!). As you mold different glycerin soap shapes, you learn about the chemical properties of soap that help it pick up and wash away dirt. While you’re concocting bath bombs, you learn about how acids and bases combine to form fizzing reactions, and what a pH level is. Expand your cosmetics knowledge with an overview of the biology of skin care and other science related to soap and bath products. All materials and chemicals are non-toxic.
Ages: 6+
Experiments: 10
Piece Count: 35
Manual Pages: 24
• New High-Demand Home Study Solution!
• Enhanced butterfly raising kit provides weeks of real world STEM learning at home
• Only kit that includes BOTH FREE caterpillars that ship for free!
• Ultra-Clear front facing viewing panel
• Large Tuck-Away Learning Panel highlights the stages of metamorphosis
• Flower shaped butterfly nectar feeder
• Feeding dropper
• Clear, comprehensive instruction guide
• 12 page STEM Journal, filled with learning and fun
• Made with 0.35mm thick PVC and polyester fabric
• Detachable hood with drawstring
• Storm flap front with snap closure
• 2 flapped front pockets with snap closures to secure valuables
• Cape vented back
• Corduroy collar for comfort
• Adjustable suspenders for with triangular buckles for a perfect fit
• Front fly opening with snap
• Light to medium duty.
• Applications: Crossing guards, survey crews, law enforcement, ranching, and forestry.
• Available with or without CROSSING GUARD emblem on back
Heavy duty .35mm PVC on polyester broadloom fabric offers long term durability. Complete 3-piece suit includes jacket (with corduroy collar and cape vented back), detachable hood and bib pants. Available in 4 sizes with or without CROSSING GUARD Emblem on back.
•13" W x 42.5" H Pocket Chart with 14 rows of pockets
• 15 Double-Sided Write & Wipe Analog Clock Faces
• 20 Double-Sided Write & Wipe Digital Time Cards including 16 blanks
• 13 Double-Sided Write & Wipe Subject Cards including 8 blanks
• 3 Bottom Storage Pockets
The Daily Schedule Pocket Chart makes displaying daily classroom schedules easy! This pocket chart was designed with three columns of pockets in 14 rows (42 pockets total). You can display 14 separate events or subjects together with the analog clock faces and digital time cards. Start off by writing the time on the write and wipe clock face and place it in the first pocket. Find the corresponding digital time or write it on one of the 24 blank time cards. Place that card in the second pocket. Finally, find the subject that occurs during this time or write it on one of the 9 blank subject cards provided. Now you have the first activity in your schedule completed. Continue this process as you go through your daily schedule.
The Daily Schedule Pocket Chart is big enough for students to read what is next in the schedule and at what time it occurs, but does not take up much space in the classroom. The bright colors of the cards make the times stand out so they are easy to read.
The Daily Schedule Pocket Chart is also helpful for students who arrive late or for those who want to know where the class is throughout the day. Telling time and organizing your classroom has never been so easy!
• Two - 2" Horizontal 3M Scotchlite Reflective Tape around legs.
• Elastic waist pants with drawstring for an adjustable fit.
• 2 slash pockets with reach thru slits.
• Polyurethane over 250 Denier Polyester Oxford Material.
• Dielectric non-conductive hardware.
• Expandable zippered ankle gussets for easy on and off. 10.5” zipper length.
• Size Large Only (36-38").
Stay dry, visible, and comfortable in demanding conditions with these high-performance rain pants. Built from durable polyurethane over 250 denier polyester Oxford, they feature two 2-inch horizontal bands of 3M Scotchlite reflective tape around each leg for enhanced visibility. The elastic waistband with adjustable drawstring ensures a secure fit, while reach-through slash pockets provide convenient access to inner garments. Designed with dielectric, non-conductive hardware and 10.5-inch expandable zippered ankle gussets for easy on and off, these pants are made for practicality and safety. Size Large (36–38") only. Meets ANSI 107-2010 requirements and qualifies as Class E (ensemble) when worn without other ANSI 107 garments.
• Helps to mark a safe distance between guests
• Allows a business to be in compliance with government social distancing guidelines
• High visibility fluorescent green
• UV Protect for indoor/outdoor use
• 34% more viewing space compared to 4-sided signs
Schools, retail and industrial facilities need portable signage to provide visibility and awareness related to current concerns. These 3 Sided Safety Sign cones are essential for keeping everyone safe and informed.
All-in-one unit combining a probe and a meter. Probe is NTC thermistor, housed in a stainless steel shaft. Shaft has a pointed tip for easy penetration of frozen or semi-solid materials. Provides highly accurate temperature measurements with very quick response time. SPECIFICATIONS: Range: -50 to +150ºC. Accuracy: 0.2ºC (-20 to +90ºC) and 0.5ºC (-50 to -20ºC and +91 to +150ºC). Battery: 1 1.4V, 3000 hours of continuous use. Dimensions: 66 x 50 x 25 mm. Probe: Stainless steel, 105 mm x 3 mm diameter.
Steam autoclavable, polypropylene molded tray has a built-in handle for easy carrying of reagents or laboratory ware using one hand.
Steam autoclavable, polypropylene molded tray has a built-in handle for easy carrying of reagents or laboratory ware using one hand.
Sturdy Spot Welded 1/8" steel wire construction. This unit holds up to six crucibles. Each opening is 1.3" in diameter. Overall dimensions 5" wide x 3.5" deep x 2" high.
Sturdy Spot Welded 1/8" steel wire construction. This unit holds up to six crucibles. Each opening is 1.3" in diameter. Overall dimensions 5" wide x 3.5" deep x 2" high.
Using the Crucible Cradle will help alleviate many of the problems associated with the proper handling of the crucible. You can now eliminate the need for the use of crucible tongs. Many students find the use of tongs awkward and end up dropping the crucible. The Cradle will also eliminate the need to touch the crucible after it has been heated. Oils from the finger tips can add weight to your final results, and throw off your findings.
Using the Crucible Cradle will help alleviate many of the problems associated with the proper handling of the crucible. You can now eliminate the need for the use of crucible tongs. Many students find the use of tongs awkward and end up dropping the crucible. The Cradle will also eliminate the need to touch the crucible after it has been heated. Oils from the finger tips can add weight to your final results, and throw off your findings.
Perfect for counting, measuring and patterning. Plastic 1 cm cubes in 10 colors come in a storage tub with Activity Guide. Grades 1 +
This set of 1000 Centimeter cubes is perfect for counting, measuring and patterning. Plastic 1 cm cubes in 10 colors come in a storage tub with Activity Guide. Grades 1 +
Handles beakers from 100 to 1500 ml capacity. Stainless steel. Riveted joint. . .Jaws are fiberglass covered. Length 13 1/2".
Handles beakers from 100 to 1500 ml capacity. Stainless steel. Riveted joint. . .Jaws are fiberglass covered. Length 13 1/2".
Nickel-plated brass tube 12 mm diameter with a non-removable screw type air regulator also provided with a threaded needle valve flame intensity regulator, with brass 9 mm diameter serrated gas inlet tube. On stable heavy cast-iron base, baked hammertone finish.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
These plug caps for test tubes are high grip hollow made of low density polyethylene. Hollow caps makes insertion and removal from test tubes easy. Sold in packs of 500.