Iron filings, in shaker bottle for magnetism demonstration - 500g
These magnetic filings are great for classroom use and allow students to engage in a wide variety of hands on experiments to develop a greater understanding of concepts related to magnetism. 500g in a shaker bottle.
Gives star positions for any date. Shows constellations, stars to 5th magnitude, nebula, Milky Way and the ecliptic. Major stars luminous for outdoor use. Has instructions, planet positions and Zodiac dial on reverse.
• 12" galvanized spike and washer
• For permanent light duty installation
12" Galvanized spike and washer (for permanent light duty installation)
Includes: two 5/16" x 2 1/2" one-way head bolts, 2 5/16" aluminum break-away nuts and 4 washers.
Chain is attached, locks securely on the post under the ball top and is made up of two components which snap together. Reversing one component turns C-hook into an O-ring for greater chain security.
This Wall Receptacle is used to attach a retractable belt pulled from a stanchion or wall-mounted safety barrier to the opposing wall, to complete the temporary closure. The receptacle is made of aluminum and includes mounting hardware.
Disecto Flex-Pad is washable, long lasting, has a smooth surface, is clean, removable, odorless and pins do not require cleaning after use.
Disecto Flex-Pad is washable, long lasting, has a smooth surface, is clean, removable, odorless and pins do not require cleaning after use. For econo poly pans.
The clear plastic covers snap firmly to the pans to prevent excessive moisture loss. Covers specimens up to 3" high.
The clear plastic covers snap firmly to the pans to prevent excessive moisture loss. Covers specimens up to 3" high.
Pans are constructed of high-density polyethylene for years of continued use. The units are designed to stack in place or to nest for convenient storage.
Pans are constructed of high-density polyethylene for years of continued use. The units are designed to stack in place or to nest for convenient storage.
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.
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.
Unique features include flexible, shatterproof material, and no-drip cover. Exclusive design forces condensation to remain in the tank. 10-1/2 in. x 7 in.
Great for creating terrariums, small aquariums, or as a "critter" cage. Solves the cracking and breakage problem of rigid plastic and glass tanks. Unique features include nestable to save storage space, flexible, shatterproof material, molded foot pegs that prevent scratching and temperature transfer, rounded corners for easy clean up, and no-drip cover. Exclusive design forces condensation to remain in the tank.