Eisco

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US$40.89
Organic chemistry molecular model set for scientific study. Contains 114 plastic pieces representing 50 atoms and 64 links for hands-on learning. Links for constructing single, double, and triple bonds. Plastic four-compartment box for storage. Detailed instructions for ease of use.
Delivery within 2-3 weeks
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US$37.02
Organic and inorganic chemistry molecular model set for scientific study. Contains 86 plastic pieces representing 51 atoms and 35 links for hands-on learning. Links for constructing single, double, and triple bonds. Plastic four-compartment box for storage. Detailed instructions for ease of use. 
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US$100.80
This teacher's molecular model set contains a large amount of atoms for most basic chemistry models. Includes: [45] Carbon (black), 4 Holes. [18] Oxygen (red), 1 Holes. [42] Oxygen (red), 2 Holes. [12] Oxygen (red), 4 Holes. [12] Metal (grey), 2 Holes. [10] Metal (grey), 3 Holes. [10] Metal (grey), 6 Holes. [36] Hydrogen (white), 1 Holes. [12] Sulphur (yellow), 4 Holes. [15] Nitrogen (blue), 3 Holes. [12] Phosphorus (purple), 4 Holes. [6] Phosphorus (purple), 3 Holes. [170] Medium Bonds. [100] Long (Flex) Bonds.
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US$46.58
This set helps visualize the shapes of atomic and molecular orbitals. Contains enough individual parts to build 14 distinct models. 1s Unhybridized (1) 3d Unhybridized (5) 2s Unhybridized (1) 2s + 3 2 p orbitals Unhybridized (1) 2p Unhybridized (3) sp, sp2 sp3 Hybridized (3) Pink and purple coloured pear-shaped lobes represent the two wave phase (positive & negative) of the p and d atomic orbitals. White spheres represent the atomic nuclei. Each model comes with a transparent base for display.
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US$4.33

This is a basic, high quality steel handle, slotted to accept blades. Stainless steel handle. No. 4 Style. Dimensions: 1 x 8 x 10 inches ; 12.8 ounces.

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US$6.36
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
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US$6.82
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
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US$9.04
This acrylic body spring scale with large has easily read flat scales and is zero adjustable.
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US$11.81
These high resolution, aluminum spring balances are classroom quality and high resolution.
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US$11.81
These high resolution, aluminum spring balances are classroom quality and high resolution.
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US$44.54
The set consists of six 20mm cubes of the following metals: brass, lead, zinc, copper, aluminum, and iron. Perfect for investigating density.
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US$8.40
Single, open sided frame, with hooks at each end carrying three ball bearing plastic pulleys with diameters of 25, 38 and 50 mm respectively. The open side frame greatly facilitates stringing up as no 'threading' is involved.
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US$22.68
Bench clamp pulley 50 mm diameter pulley with metal ball bearing carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
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US$26.25
Comprising a 50 mm diameter nylon ball bearing pulley, carried on a two part aluminium frame, designed primarily for clamping to the edge of a bench, table etc. With the pulley overhanging the edge and in a vertical plane. Overall length of frame (pulley bar) 110 mm. Maximum clamp opening 25 mm.
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US$22.40
Clamp has a 45mm plastic pulley with bracket for bench mounting up to 25mm thickness. Can be used with a force table as well. 
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