A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.
A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.
• NON-ANSI
• 100% Waterproof Vinyl
• One size fits all
• Orange
• No reflective tape
• NON-ANSI
• 100% POLYESTER TRICOT
• 26" - 50"
• LIME SOLID VEST
• NO REFLECTIVE TAPE
• Constructed of 420D nylon pack cloth
• School Safety Patrol emblem on both sides
• Stitched fabric edges
• Elastic side straps
• Slip easily over a jacket or coat
• 2 Pass urethane coating
• Easily cleaned with a damp cloth
These Slip-Over Safety Patrol Capes are constructed of 420D nylon pack cloth and are screened with our School Safety Patrol emblem on both sides. The durable nylon material has a 2 pass urethane coating making them easy to clean with a damp cloth. They have stitched fabric edges and elastic side straps. These capes will easily slip over a jacket or coat.
Small
14 ½" Across should to shoulder
16" From Shoulder to hem
Medium
15" Across should to shoulder
22" From Shoulder to hem
Large
17" Across should to shoulder
27" From Shoulder to hem
• Raglan sleeves
• 100% nylon taffeta
• Byron collar
• Elastic cuffs
• Color-matched snap closure
• Reinforced nylon pockets
• Drawstring bottom
• Water repellent
Available in 5 colors with STAFF, SECURITY, or SCHOOL SAFETY PATROL screened on front and back.
Limited quantities available
These popular lightweight protective glasses have 8.5 base curve polycarbonate dual lens, and offer 99% UV protection. Lenses are treated with a scratch resistant coating. Integrated rubber temples for firm hold. Fits all face sizes. Lanyard included with every pair. Meets the requirements of ANSI Z87.1 Impact.
• Polycarbonate
• Widely Accepted style
• Frameless safety glasses
• Rubber temple tips
• Traffic signal recognition lenses with anti-fog coating
• Meets ANSI Z87. 1+
Perfect for crossing guards, these protective glasses with brown traffic signal recognition lenses are lightweight. 8.5 base curve polycarbonate dual lens offers 99% UV protection, and have a scratch resistant coating. Integrated rubber temples for firm hold. Lanyard included with every pair. Fits all face sizes. Meets the requirements of ANSI Z87.1 Impact.
3" wide bright orange armband constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.
3" wide bright orange armband with reflective silver stripe. Constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.
Lightweight, high quality, knitted, seamless gloves. Made of acrylic yarns. High visibility orange. Comfortable for year-round use. Black PVC dots on both sides. Adult Size. One size fits all.
Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA.
Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA. Limited supply available.
Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.
Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.
Includes 1 overflow can (15949) and 1 catch bucket (15950).
Includes 1 overflow can (15949) and 1 catch bucket (15950).
Dried and heat pasteurized according to the United States Department of Agriculture regulations. High quality, 1-1 1/2" and larger, individually wrapped in aluminum foil.
Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 12 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 24 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Instant planter, just add water then seed or stick in cuttings as desired. Peat with proper starting nutrients are compressed into small wafer, when water is added, it expands 7 times its size into small post 1 3/4" x 2 1/8" high and covered with plastic net. Plant roots grow right through pellet permitting replanting without removing pot.
Instant planter, just add water then seed or stick in cuttings as desired. Peat with proper starting nutrients are compressed into small wafer, when water is added, it expands 7 times its size into small post 1 3/4" x 2 1/8" high and covered with plastic net. Plant roots grow right through pellet permitting replanting without removing pot. Pack of 100.
Instant planter, just add water then seed or stick in cuttings as desired. Peat with proper starting nutrients are compressed into small wafer, when water is added, it expands 7 times its size into small post 1 3/4" x 2 1/8" high and covered with plastic net. Plant roots grow right through pellet permitting replanting without removing pot. Pack of 24.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.
Connect this clamp to any support rod to set up three separate pendulum demonstrations. Includes individual cord clamps.
8 1/4"x 11" Designed in Germany by a well-reputed chemistry teacher, our full-color, illustrated Periodic Table of the Elements features the natural look of the elements or their most usual application. Our poster and wall-sized editions will fit well on your office or classroom wall, while the binder size provides all the pertinent data on the elements on the reverse side and fits well in your students' binders.
25" x 38" Designed in Germany by a well-reputed chemistry teacher, our full-color, illustrated Periodic Table of the Elements features the natural look of the elements or their most usual application. Our poster and wall-sized editions will fit well on your office or classroom wall.
In one minute test the pH computer determines the acid/alkaline composition. Directions include desired range for 350 plants. Tells user what to do if soil is not in desired pH range.
Easy one hand operation. Rotation of the thumbwheel draws or dispenses the liquid with precision and ease. By depressing the side lever the entire contents can be dispensed rapidly. Accepts glass and plastic pipettes. Color coded for sizes.