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.
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.
3" glass "medicine dropper" with rubber bulb.
Pith balls react sensitively to static charges like those from a charged friction rod or a Van de Graaff generator.
Pith balls react sensitively to static charges like those from a charged friction rod or a Van de Graaff generator.
Pith balls react sensitively to static charges like those from a charged friction rod or a Van de Graaff generator.
Made from plate glass about 1/16" thick. Highly Silvered back.
This 3in x 1in mirror is made from plate glass about 1/16in thick with a highly silvered back.
Made from plate glass about 1/16" thick. Highly Silvered back.
This 4in x 2in mirror is made from plate glass about 1/16in thick with a highly silvered back.
Made from plate glass about 1/16" thick. Highly Silvered back.
This 4in x 4in mirror is made from plate glass about 1/16in thick with a highly silvered back.
Made from plate glass about 1/16" thick. Highly Silvered back.
This 6in x 2in mirror is made from plate glass about 1/16in thick with a highly silvered back.
Made from plate glass about 1/16" thick. Highly Silvered back.
This 6in x 4in mirror is made from plate glass about 1/16in thick with a highly silvered back.
• Model comes mounted on a board and is enlarged 6,000 times
• Shows the major structures of a plant cell
• Great for demonstration and learning for the classroom
• Dimensions: 16.5" x 11.8" x 3" (42 x 30 x 8cm)
This model comes mounted on a board and is enlarged 6,000 times. This model shows the major structures of a plant cell, including the cell wall, nucleus, vacuole, Golgi apparatus, mitochondria, chloroplast, chromoplast, and the endoplasmic reticulum. Great for demonstration and learning for the classroom. Dimensions: 16.5" x 11.8" x 3" (42 x 30 x 8cm)
24" x 36" full color laminated poster. This poster describes all ten divisions of the plant kingdom. Many representational species are shown including the four divisions of extinct plants. This poster is an ideal partner to our Animal Kingdom Poster (16339). Both posters are great for life science classes, but the non-technical presentation makes them popular with both animal and plant lovers alike.
Centralize your garden. Sturdy construction, complete with trays. 40" H x 25" L x 12" D NOTE: Does not included light (as pictured). Please order light separately (item # 01368).
Sold by the foot Lightweight yet remarkably strong. Made of trouble-free polyethylene with 150 lb. point of break. Maintenance-free, very durable, and fully weather resistant. will not rust or corrode. 1 1/2" links.Available in 4 colors.
Red and blue plastic covered bar magnets. These magnets are attractive as well as an easy way to teach magnetic attraction and repulsion. Each magnets dimensions are 80x15x10mm. 1 pair (2 red / 2 blue).
Chain accessories for our plastic chain. These master links have a UV protectant added to keep the colors bright and maintain the integrity of the plastic for five years of use. Set of 2. Available in 3 colors.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 34mm, Height: 210mm, Graduated Interval: 1ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 34mm, Height: 210mm, Graduated Interval: 1ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.