Under $10

This Moh's Hardness Scale collection is mounted on a 5 1/2" X 7 1/8" full color cardstock which holds 9 specimens in their order from the softest (#1 Talc) to the hardest (#10 Diamond not included). There are indicators on the card which instruct the students what will affect the surface of each of these specimens. This economy version of the Hardness Collection has specimens measuring 1/2" to 3/4" in size. The card is packaged in a resalable zip lock bag. Grade Level 6-12. Ages 11-18.
This Moh's Hardness Scale collection is mounted on a 5 1/2" X 7 1/8" full color cardstock which holds 9 specimens in their order from the softest (#1 Talc) to the hardest (#10 Diamond not included). There are indicators on the card which instruct the students what will affect the surface of each of these specimens. This economy version of the Hardness Collection has specimens measuring 1/2" to 3/4" in size. The card is packaged in a resalable zip lock bag. Grade Level 6-12. Ages 11-18.

Aluminum die cast clamp for holding 2 pieces of apparatus in 3 positions: right angles, parallel or vertical. Holds rods to 1/2" in diameter.
Aluminum die cast clamp for holding 2 pieces of apparatus in 3 positions: right angles, parallel or vertical. Holds rods to 1/2" in diameter.

Standard Conical shaped flasks, in seven sizes, borosilicate (heat resistant) glass, marked with graduations for approximate volumes, used in the laboratory for mixing, storing and heating of liquids.

50 ml flask uses a size 1 stopper
150 ml flask uses a size 5 stopper
250 ml flask uses a size 6.5 stopper
500 ml flask uses a size 6.5 stopper
1000 ml flask uses a size 9 stopper

Stoppers not included.

These polypropylene bottles are rigid, translucent and have excellent contact clarity. These bottles can be autoclaved filled as well when they are empty. The polypropylene cap has a built-in seal ring to make these bottles leak proof. Avaialble in 5 sizes.

• 100% Nylon micro mesh fabric
• Lightweight and breathable for comfortable wear
• Neck and arm holes offer full range of motion
• Available in Fluorescent Green or Orange

These hi-viz Mesh Vests easily separate students into teams for group activities, making them a great addition to any class. Featuring a 100% nylon micro mesh fabric, these vests are lightweight and breathable. These vests offer a full range of motion.

• 100% Nylon micro mesh fabric
• Lightweight and breathable for comfortable wear
• Neck and arm holes offer full range of motion
• Available in Fluorescent Green or Orange

These hi-viz Mesh Vests easily separate students into teams for group activities, making them a great addition to any class. Featuring a 100% nylon micro mesh fabric, these vests are lightweight and breathable. These vests offer a full range of motion.

Neutral glass. Uniform thickness. Available in 3 sizes.

Set of 2 lenses, 1 concave and 1 convex, 38 mm diameter, 150 mm focal length.
Set of 2 lenses, 1 concave and 1 convex, 38 mm diameter, 150 mm focal length.

To demonstrate interference of light. Consists of a pair of glass plates, optically polished, 60mm in diameter, one plane and the other plano-convex mounted together in a baked enamel finish metal frame. Pressure between the plates is adjustable by three nickel-plated brass screws. Instructions included.
To demonstrate interference of light. Consists of a pair of glass plates, optically polished, 60mm in diameter, one plane and the other plano-convex mounted together in a baked enamel finish metal frame. Pressure between the plates is adjustable by three nickel-plated brass screws. Instructions included.

The original Hydrometer. Brass, baked enamel finish. It is used to measure density of both solids (which are not soluble) and liquids denser than water. Instructions included.
The original Hydrometer. Brass, baked enamel finish. It is used to measure density of both solids (which are not soluble) and liquids denser than water. Instructions included.

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A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.
A chart and pocket-sized viewer that shows the color spectra of common night lights, identifies each spectrum, and includes a diffraction grating through which you can see them. You can easily survey the night light spectra while riding around after dark, holding Night Spectra Quest up to your eye, with someone else driving. Booklet also includes further information and experiments.

• NON-ANSI
• 100% Waterproof Vinyl
• One size fits all
• Orange
• No reflective tape

• NON-ANSI
• 100% POLYESTER TRICOT
• 26" - 50"
• LIME SOLID VEST
• NO REFLECTIVE TAPE

• Raglan sleeves
• 100% nylon taffeta
• Byron collar
• Elastic cuffs
• Color-matched snap closure
• Reinforced nylon pockets
• Drawstring bottom
• Water repellent

Available in 5 colors with STAFF, SECURITY, or SCHOOL SAFETY PATROL screened on front and back.

Limited quantities available

These popular lightweight protective glasses have 8.5 base curve polycarbonate dual lens, and offer 99% UV protection. Lenses are treated with a scratch resistant coating. Integrated rubber temples for firm hold. Fits all face sizes. Lanyard included with every pair. Meets the requirements of ANSI Z87.1 Impact.

•  Polycarbonate
• Widely Accepted style
• Frameless safety glasses
• Rubber temple tips
• Traffic signal recognition lenses with anti-fog coating
• Meets ANSI Z87. 1+

Perfect for crossing guards, these protective glasses with brown traffic signal recognition lenses are lightweight. 8.5 base curve polycarbonate dual lens offers 99% UV protection, and have a scratch resistant coating. Integrated rubber temples for firm hold. Lanyard included with every pair. Fits all face sizes. Meets the requirements of ANSI Z87.1 Impact.

• Get their attention with this Medium-Weight Metal Whistle.
• This durable whistle features a metal ring for easy attachment. 
• Nickel-plated brass.
• 1 3/4" long.

When safety and communication are paramount, our Medium-Weight Metal Whistle delivers. Its sturdy construction ensures longevity, and the metal ring provides effortless attachment to a lanyard, belt loop, or keychain. A clear, sharp sound resonates, making it suitable for sports events, outdoor adventures, or any situation where a reliable signal is needed.

3" wide bright orange armband constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.

3" wide bright orange armband with reflective silver stripe. Constructed of nylon reinforced vinyl with elastic straps to enable the band to fit arms 13" in circumference or larger.

Lightweight, high quality, knitted, seamless gloves. Made of acrylic yarns. High visibility orange. Comfortable for year-round use. Black PVC dots on both sides. Adult Size. One size fits all.

Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA.
Made of high density polypropylene this handy tray is autoclavable. Overall dimesions are 15 7/8" wide x 11 1/4" deep x 1 1/4"high. Unit has sturdy walls and 12 compartments of various sizes. Made in USA. Limited supply available.

Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.
Durable aluminum can with spout for use in Archimedes Principle, density and specific gravity experiments. Use with Catch Bucket. Overflow Can measures 4" I.D. x 5" H. Spout is 3/8" I.D. x 1.5"L.

Includes 1 overflow can (15949) and 1 catch bucket (15950).
Includes 1 overflow can (15949) and 1 catch bucket (15950).