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Earth Science
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Air Thermometer Bulb
$16.85
A glass tube (12" long) with bulb (2" in diameter), used to demonstrate qualitatively the rise or fall of a liquid column due to expansion or contraction of the air within the bulb. 0.06" bore.
(item# B088)
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Anemometer
$46.75
Determine wind velocities with model similar to one used by the U.S. Weather Bureau; Determine wind speed by counting the rotations (item# I057)
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Barometer
$23.50
Provides a measure of barometric pressure in both millimeters of mercury and hecto Pascals (hPa).Mounted on a plastic base; comes with a ring for easy hanging. Overall diameter is 5". (item# I055)
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Compass
$2.25
Aluminum case w/ glass top; Diameter: 30mm; Highly magnetic needle (item# I062)
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Elodea, 6/PK
$11.85
Monocot. An excellent oxygenator, it can be used in plant respiration and photosynthesis experiments as well as in aquariums. Size: 6–8" (item# L043)
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Greenhouse, Electric
$42.75
Unlike most greenhouses, this thermostatically controlled unit ensures a constant 75F temperature, just right for germinating seeds, establishing root cuttings, and maintaining seedlings. It can also be used as a terrarium. The unit assembles in minutes and includes porthole humidity vents. UL listed. Size: 17 3/4"LX12"WX13 1/2"H. (item# G030)
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Greenhouse, Hydroponic 19
$63.25
Low-maintenance system ideal for Agriscience Studies. Participate in a science that dates back almost 3,000 years, by growing vegetables, fruits, herbs, plants, or flowers in liquid nutrient instead of soil. Everything you need is included in this set, just add seeds and water. The tabletop system automatically feeds and waters plants using a non-electric "passive osmotic nutrient transport system". Contents: planting bed, foldaway greenhouse incubator, gallon nutrient reservoir, refill indicator, inert growing medium, year supply of nutrient, trellis, twist ties, multi-gardening tool, and the Guide to Hydroponic Gardening manual. Size: 19"LX10"WX12"H. (item# G035)
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Hammer, Rock
$41.15
Estwing and lightweight, with polished pick head, 14 oz. Featuring the same one-piece construction as standard models. Length: 11" (item# K029)
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Hydroponic Nutrient Solution 1000ml
$10.00
All purpose, complete liquid nutrient solution for any plant. (item# 486G)
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Meter, Light-Moisture
$28.50
Meter, Soil Moisture; Chromatic filter; Instant measurements; No batteries required (item# H057)
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Meter, Soil pH
$28.95
Measures from 3.5 to 9; No batteries required; Includes instructions with optimal pH values for more that 400 plants (item# H055)
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Periodic Table of Elements, Circular
$18.75
A wealth of information on a 9" diameter wheel. Just select the element you want, and instantly available are data for atomic mass, electron configuration, isotope mass range, oxidation states, chemical behavior and melting and boiling points. Over 25 data items are presented for each element, plus electron configuration, name, atomic number and symbol. Developed by a college professor, the table also includes color-coding to easily show metals, non-metals, noble gases, etc. A very useful and compact periodic table (item# I083)
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Psychrometer, Sling
$11.75
A vinyl-backed alcohol thermometer is mounted on heavy plastic 6" handle, with a single wick and rubber band. A vapor pressure/humidity chart is included. (item# I010)
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Rock & Mineral Guide Book
$9.85
Each pocket-sized volume contains hundreds of illustrations and descriptions of the most common, important, and striking examples of each type of specimen. Also includes up-to-date range maps, descriptive text with fascinating facts, and more. Softcover, 160-360 pages. (item# K020)
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Rock & Mineral Test Kit
$12.85
All the equipment you need to perform a variety of physical properties tests on rocks and minerals. It includes a streak plate for streak color; glass plate, nail, and copper strip for hardness; magnet for iron content; magnifier; and acid bottle (acid not included) for CaCO3 test. (item# I085)
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Soil Test Kit
$22.85
Kit, Environmental, Soil Test Kit, Includes all of the solutions and color charts necessary to mesure the soil`s pH, nitrogen, phosphorous, and potassium, Total: 40 tests
(item# I086)
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Streak Plate, Unglazed
$1.00
These unglazed porcelain plates are ideally sized for field or lab testing. To test, rub the specimen across the plate to determine its streak color; use black plates for light minerals. Size: 2" x 2" (item# K028)
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Terrarium, Poly w/Vent Lid 1 Gallon
$7.75
Versatile Flex-Tanks and covers may be used as aquariums, terrariums or critter chambers. Tanks will not crack or break like rigid plastic or glass. Features dial vented cover. (item# G024)
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Terrarium, Poly w/vent lid 1/2 Gallon
$6.50
Versatile Flex-Tanks and covers may be used as aquariums, terrariums or critter chambers. Tanks will not crack or break like rigid plastic or glass. Features dial vented cover. (item# G025)
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