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.
An introduction to the relationship between solute and solvent which is vital to life for both animal, plant... this kit illustrates how cellular absorption occurs in animal tissue. Kit contains: strips visking membrane, glucose, iodine solution, starch, benedicts A, benedicts B, instructions and background material. Sufficient materials for 16 pairs of students. Grades 9-12.
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).
Proper dissolved oxygen levels are essential for aquatic ecosystems. A dissolved oxygen level of 5 mg/L or greater will support healthy growth of most fish species. Other applications include monitoring in waste water treatment plants, determination of BOD and COD. This test kit uses an adaptation of the Winkler method to determine dissolved oxygen. Includes 100 tests.
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.
The 15 fossil specimens in this collection illustrate the animal and plant evidence found in various strata. Representative fossils from this era are the oldest known, coming from the Cambrian through the Permian periods. Grades 7-12.
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.
• 100' long
• Plastic pennants are 18" long
• Blue, Yellow, Red, Green & White.
• Dress up your field, control crowds, etc.
In 100' lengths. Plastic pennants are 18" long in a variety of colors: Blue, Yellow, Red, Green & White. Dress up your field, control crowds, etc.
1000' in 100' lengths. Plastic pennants are 18" long in a variety of colors: Blue, Yellow, Red, Green & White. Dress up your field, control crowds, etc.
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.
Perma-Nest Plant Trays are heavy-duty, stackable, and versatile. You will not find a better tray on the market. They are easy to clean and will last for years. Perfect for use as a drip tray. Great for garden starts, and growing wheatgrass, plants, seedlings, microgreens & more. These polystyrene plant trays never harbors bacteria or harmful molds. Tray color may vary.
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.
This kit is a unique teaching tool for introducing your students to the chemistry behind plant pigments (the blueberry biopigment cyanidan) and how they can be used as pH indicators and fabric dyes. They use their knowledge to create their own pH test strips and evaluate them against a commercial type. Includes materials for four detailed activities featuring "model" and "inquiry" investigation paths – a total of 11 investigational activities, which can accommodate up to 40 students! Also contains a DVD with PDF Teacher and Student Guides and other digital content (see below). Covered concepts include: data analysis, accuracy vs. precision, biopigment structure, pH, pH scale, pH indicators, stains and dyes, acids, bases, acid-base interactions, solutions, and self ionization of water. STEM based curriculum kits accent the scientific method and independent inquiry featuring hands-on learning materials and exciting interactive digital content that can be accessed on a computer, tablet or your mobile device. Kits contain structured, guided, and open investigations, at introductory, intermediate, and advanced levels, to make inquiry based learning affordable and fun. Requires additional household materials for independent investigations. Student activity PDFs have a special Typewriter functionality allowing them to take notes, record experimental data, and answer analysis questions. They simply e-mail their worksheets back to you!
This kit is a unique teaching tool for introducing your students to the chemistry behind plant pigments (the blueberry biopigment cyanidan) and how they can be used as pH indicators and fabric dyes. They use their knowledge to create their own pH test strips and evaluate them against a commercial type. Includes materials for four detailed activities featuring "model" and "inquiry" investigation paths – a total of 11 investigational activities, which can accommodate up to 40 students! Also contains a DVD with PDF Teacher and Student Guides and other digital content (see below). Covered concepts include: data analysis, accuracy vs. precision, biopigment structure, pH, pH scale, pH indicators, stains and dyes, acids, bases, acid-base interactions, solutions, and self ionization of water. STEM based curriculum kits accent the scientific method and independent inquiry featuring hands-on learning materials and exciting interactive digital content that can be accessed on a computer, tablet or your mobile device. Kits contain structured, guided, and open investigations, at introductory, intermediate, and advanced levels, to make inquiry based learning affordable and fun. Requires additional household materials for independent investigations. Student activity PDFs have a special Typewriter functionality allowing them to take notes, record experimental data, and answer analysis questions. They simply e-mail their worksheets back to you!
Made for Work, but Works for Play. An innovative jacket constructed from a combination of 150 denier fluorescent yellow-green polyester and 360 gram black fleece that keeps you warm and visible, yet cool and comfortable for 3 season protection. Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
An innovative jacket constructed from a combination of 150 denier fluorescent yellow-green polyester and 360 gram black fleece that keeps you warm and visible, yet cool and comfortable for 3 season protection.
Ideal Applications: For use in environments where high visibility and warmth are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 2 compliant jacket for high visibility.
• Athletic apparel design and performance adapted for work environments.
• Insulating heavy weight fleece provides warmth and comfort.
• Fluorescent yellow-green background material for excellent daytime visibility.
• 2 inch silver reflective tape reflects light for 360° nighttime conspicuity.
• 4 exterior pockets for added convenience.
• Breathable, insulating fabric for 3 season comfort.
• Overhead shoulder design for complete freedom of movement.
• Storm fly front and zipper front closure seals out wind.
• Front hand warmer pockets with zipper closure.
• Right and left breast security pockets with zipper closure.
• Adjustable elastic drawcord at waist for easy adjustment.
• Black material in high wear areas helps conceal dirt.
• Sleeves are lined for ease of use.
• 2 Mic Tabs.
• Can be zipped into the Icon™ (SS034D) outer shell to create a multi-season comfort system.
Made for work, but works for play. A revolutionary 3 layer material that keeps you warm and dry, yet cool and comfortable for 3-season protection. Offers amazing warmth-to-weight ratio in a breathable, wind and water resistant system. Ideal Applications: For use in environments where high visibility and breathability are desired for wearer safety and comfort.
A revolutionary 3 layer material that keeps you warm and dry, yet cool and comfortable for 3-season protection. Offers amazing warmth-to-weight ratio in a breathable, wind and water resistant system.
Ideal Applications: For use in environments where high visibility and breathability are desired for wearer safety and comfort.
• ANSI/ISEA 107 Type R Class 3 compliant jacket for high visibility and breathability.
• Breathable to ASTM E96.
• Athletic apparel design and performance adapted for work environments.
• Inner fleece layer provides warmth and comfort.
• Fluorescent yellow-green background material for excellent daytime visibility.
• 2” silver reflective tape reflects light for 360° nighttime conspicuity.
• Overhead shoulder design for complete freedom of movement.
• Stretch fabric with inner fleece layer for maximum comfort.
• Storm fly front and zipper front closure seal out wind and rain.
• Front hand warmer pockets with zipper closure.
• Right breast security pocket with zipper closure.
• Hook & loop take-up straps on sleeve cuffs for easy adjustment.
• Longer cut back with adjustable elastic drawcord for extra coverage.
• Dark colored front helps conceal dirt.
• Can be zipped into the Icon™ (SS034D) outer shell for insulation.
• Small and Medium sizes have all yellow-green sleeves to meet ANSI 107 requirements.
Accuracy: ±0.05pH Resolution: 0.01pH The pHep 5 includes features such as a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, instability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing. Supplied with protective cap, electrode removal tool, batteries and instructions.
Accuracy: ±0.05pH Resolution: 0.01pH The pHep 5 includes features such as a dual-level LCD, battery level indicator, replaceable pH electrode cartridge, instability indicator, automatic shut-off and automatic calibration all in a floating, waterproof casing. Supplied with protective cap, electrode removal tool, batteries and instructions.
Observe the color and state of matter for 14 different substances. Test liquids for the presence of odor and observe the texture of solids. Test the acidity or alkalinity of liquids. Test the solubility of solids in alcohol and water. All materials included except: water, stirring rod, graduated cylinder, balance, hand lens (optional), safety glasses, test tubes or depression plate for solubility test. Designed for 24 students in groups of 4. Grades 8-11.
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.