Contains 15 representative specimens of intrusive and extrusive igneous rocks, each approximately 1.5" x 1.5". Grades 5-12. Ages 10-18.
Cargille Immersion oils meet ISO standards for performance
Available in 1/4 oz bottles
Types A and B are used for most fluorescent microscopy applications, type NVH.
Cargille Immersion Oil is required for high magnification and to obtain sharp images with clear resolution. These Immersion oils meet ISO standards for quality. Type A (low viscosity) and Type B (high viscosity) are used for normal microscopy applications with viscosities from 150-1250 (centistokes). The greater the gap between cover glass and objective, or condenser and slide, the more desirable high viscosity becomes. Type A and B are both used for most fluorescent microscopy applications, but Type A has a lower viscosity, which reduces any tendency to trap air causing image degradation and is easier to clean up.
Cargille Immersion oils meet ISO standards for performance
Available in 1/4 oz bottles
Types A and B are used for most fluorescent microscopy applications, type NVH.
Cargille Immersion Oil is required for high magnification and to obtain sharp images with clear resolution. These Immersion oils meet ISO standards for quality. Type A (low viscosity) and Type B (high viscosity) are used for normal microscopy applications with viscosities from 150-1250 (centistokes). The greater the gap between cover glass and objective, or condenser and slide, the more desirable high viscosity becomes. Type B is recommended when there is a larger gap between your cover slip and the objective. For extremely large gaps, NVH is required.
Sturdy plastic impact car features a graduated spring scale and a slide that is displaced on impact against an obstacle. Includes activity guide.
Sturdy plastic impact car features a graduated spring scale and a slide that is displaced on impact against an obstacle. Includes activity guide.
• 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.
This robustly constructed inertia demonstrator works reliably every time and is a great improvement on traditional versions of this classic experiment. A steel ball rests on a thin metal card on top of a pillar, and a spring-loaded catch is mounted next to the pillar. When the catch is released, a piston strikes the edge of the metal card sharply. The card flies out from under the ball, which remains in place on top of the pillar due to its large inertial mass. The card is tethered to the aluminum base for easy recovery after the experiment.
This robustly constructed inertia demonstrator works reliably every time and is a great improvement on traditional versions of this classic experiment. A steel ball rests on a thin metal card on top of a pillar, and a spring-loaded catch is mounted next to the pillar. When the catch is released, a piston strikes the edge of the metal card sharply. The card flies out from under the ball, which remains in place on top of the pillar due to its large inertial mass. The card is tethered to the aluminum base for easy recovery after the experiment.
• 7.5" x 3.25" insert sign for SS604M and SA150M Sign Vests
• Printed on 110 lb. card stock
• 8 legends available
• Instant cold pack to soothe injuries
• Simply squeeze to activate cold compress
• 4" x 9"
• Case of 16
• Single use only
22 Gauge insulated copper wire. 100 ft. Color: Black
22 Gauge insulated copper wire. 100 ft. Color: Black
22 Gauge insulated copper wire. 100 ft. Color: Red
22 Gauge insulated copper wire. 100 ft. Color: Red
22 Gauge insulated copper wire. 100 ft. Color: White
22 Gauge insulated copper wire. 100 ft. Color: White
36" x 24" full color laminated poster. "We can follow our dreams to distant stars...," declared President Reagan when he proposed this ambitious project in his 1984 State of the Union address. This poster provides a comprehensive overview of the program goals, how it got started, its various components, and its appearance when finished. The visiting Space Shuttle provides scale.
36" x 24" full color laminated poster. "We can follow our dreams to distant stars...," declared President Reagan when he proposed this ambitious project in his 1984 State of the Union address. This poster provides a comprehensive overview of the program goals, how it got started, its various components, and its appearance when finished. The visiting Space Shuttle provides scale.
36" x 24" full color laminated poster.
Fossils were a mystery for thousands of years; then a few pioneering scientists realized that they were the remains or traces of once-living organisms.
Well-known bone-type fossils are actually rocks, the result of a process called mineralization in which minerals replace decaying tissue. This process is shown and explained. All of the other fossil types are also explored.
The rarity of fossils is dramatically presented, and strange things sometimes mistaken for fossils are identified. There€™s an introduction to fossil expeditions and a summary of how fossils contribute to our understanding of the earth and life on it.
There is an especially helpful section on the relationships between fossils and geology. It covers the principle of original horizontality, the law of superimposition, the principle of faunal succession, the geological time scale, index fossils, relative dating, and absolute dating.
All of this is conveyed through detailed illustrations showing the processes, excellent photographs of representative specimens, and interesting and informative captions. This poster is a great aid to museum interpretive programs and is extremely beneficial in the study of both life and earth sciences.
36" x 24" full color laminated poster.
This poster begins by defining a mineral. It then expands on that by exploring atoms, molecules, and crystal structure. The various crystal structures are explained. This is followed by an excellent summary of the mineral classes.
Mineral collectors and students want to identify their specimens. However, specimens of the same mineral can vary greatly in appearance, which can make that a daunting task. Identification is based on a number of properties.
This poster provides an outstanding introduction to those properties: hardness, habit, luster, cleavage, specific gravity, color, streak, and fluorescence. Illustrations are used to explain principles. Photographs of truly outstanding specimens are used as examples.
Note:
(l.s.) longitudinal section
(t.s) transverse section
(w.m) whole mount
(sec) special section
(c.s) cross section
Set Includes:
B1 Conjugation of Spirogyra
B2 Lichen (w.m.)
B3 Moss Cluster (w.m.)
B4 Spinal Cord (t.s.)
B5 Wheat Seed (l.s.)
B6 Pinus Pollen (w.m.)
B7 Stem of Dicotyledon (t.s.)
B8 Stem of Monocotyledon (t.s.)
B9 Triticum Aestivum Leaf Eiders (w.m.)
B10 Terminal Bud (l.s.)
B11 Single Cell Zoo (w.m.)
B12 Animal Cell Mitosis
B13 Cardiac Muscle (sec)
B14 Blood Smear
B15 Kidney (l.s.)
Introduce the world of microscopy to your students through the selection of this prepared slide set which features numerous intriguing specimens to study and get them interested in biology. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Set Includes: B1 Conjugation of Spirogyra B2 Lichen (w.m.) B3 Moss Cluster (w.m.) B4 Spinal Cord (t.s.) B5 Wheat Seed (l.s.) B6 Pinus Pollen (w.m.) B7 Stem of Dicotyledon (t.s.) B8 Stem of Monocotyledon (t.s.) B9 Triticum Aestivum Leaf Epidermis (w.m.) B10 Terminal Bud (l.s.) B11 Single Cell Zoo (w.m.) B12 Animal Cell Mitosis B13 Cardiac Muscle (sec) B14 Blood Smear B15 Kidney.
Provides a primary presentation of the basic rock types. Includes five each of igneous, sedimentary and metamorphic rocks, totaling 15 specimens, approximately 1.5" x 1.5". Grades 6-12. Ages 11-18.
For use with Fossil Chart 16785.
Used as starch indicator, biological stain and chemical reagent. This iodine is laboratory grade and cannot be used for food or medical purposes. 500ml.
9.5 base curve offers great wrap around protection. Hard coated polycarbonate lens offers 99% UV protection. Anti-fog lens. Meets the requirements of ANSI Z87.1 Impact rated.
The Iron Electrodes can be used for voltaic cells, electrolysis experiments, fruit batteries, etc.
An ideal growing medium for annual and perennial flowers, vegetables and house plants. Composed of equal parts of shredded sphagnum peat moss and fine grade vermiculite plus just enough nutrients to sustain initial plant growth. Mixture will produce acceptable plants but for long term growing a balanced water soluble fertilizer is applied weekly. 4-Quart bag fills 35-3" pots.
Kimax® flasks for economy and versatility. These flasks are the choice for general laboratory usage. Tops are reinforced and tooled with a rounded finish, containing more glass to give them maximum mechanical strength. Body is thick-walled, with a long tapered outside contour to minimize chipping when struck or rubbed together. All flasks have durable white ceramic enamel scales to indicate approximate volumes at various levels, useful in measuring and mixing solutions where a high degree of accuracy is not necessary. Designed from ASTM Specification E1404, Type I, Class I requirements. Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.
Features
- Complies with ASTM Specification E1404, Type I, Class I requirements
- Manufactured from borosilicate glass 3.3
- Tops are reinforced and tooled with a rounded finish
- Durable ceramic enamel markings indicate approximate volumes at various levels
500 ml flask uses a size 7 stopper
Stoppers not included.
Discover the different ways we use chemistry everyday
This kit uses common household substances to make fun things
Turn bones to rubber, make rock candy, gooey slime and other crazy kitchen creations
Includes paper clips, spoon, straws, cardboard cabinet, kitchen sink, index cards, string, measuring spoon, potassium bitartrate and instructions
Recommended for children 6 years of age and older
Discover the different ways we use chemistry everyday. This kit uses common household substances to make fun things. Turn bones to rubber, make rock candy, gooey slime and other crazy kitchen creations. Includes paper clips, spoon, straws, cardboard cabinet, kitchen sink, index cards, string, measuring spoon, potassium bitartrate and instructions. Recommended for children 6 years of age and older
• Kjeldahl Bulb with #2 Stopper
• Borosilicate glass
• Sold in eaches
• Easy handling
• Efficient
Kjeldahl Bulb w/ Stoppers