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EQUIPMENT & SUPPLIES, CONTINUED
Nickel-Plated Vacuum Plate
Large enough to accommodate bell jars up to 10" diameter. Fabricated from 1⁄2" steel plate for strength. Surface ground flat to provide a good seal. Plate is nickel-plated for corrosion resistance. Includes barbed hose connection, vacuum release valve and a rubber gasket to provide a tight seal. Accepts 1⁄4" i.d. tubing.
AP8618 I $286.40
Two-Stage Vacuum Pump
The most durable two-stage pump you can buy. This quiet, dependable vacuum pump will produce a high-quality vacuum when performing experiments in which a very low pressure
is needed (e.g., boiling water at room temperature). The rotary sliding vane produces a free
air capacity of 85 liters per minute. Other features/specifications include: direct drive; oil trap; pump speed of 3360 rpm; a 1⁄2-hp, 110-V, 60-Hz motor; oil capacity of 300 mL; and two intake ports for 1⁄4" or 1⁄2" i.d. tubing. Weighs 30 lbs and dimensions are 11" H x 14" L x 51⁄4" W. Pump oil (1-pint bottle) is included. Visit flinnsci.com for free demonstration instructions and activities.
AP1597 I $785.00
Glass Bell Jars
High-quality, flint glass bell jars. Glass is crystal clear, allowing students to easily view experiments performed inside the jar. Available with a molded glass knob or a ground glass stopper. Also available in two sizes. Dimensions of small bell jars: 6" o.d. x 10" tall. Dimensions of large bell jars: 10" o.d. x 16" tall.
4 options available at flinnsci.com $102.90–$291.80
Vacuum Chamber with Plate
Safe polycarbonate bell jar is 6" in diame- ter and stands 9" tall. Clear plastic allows for easy observation of air pressure effects. Vacuum plate is polycarbonate plastic with an outside diameter of 71⁄2". The side- mounted tubing adapter accepts 1⁄4" i.d. vacuum tubing.
Single-Stage Vacuum Pump
Low-maintenance, economical, single-stage vacuum pump is fast and easy to operate. Oil-less operation produces a moderate vacuum of 150 mm Hg. It can also push a pressure of 3,192 mm Hg, which is 4.2 times normal room pressure. Other specifications include 31 liters/minute, open flow, motor speed of 1725 rpm, hp, gauges, on/off switch on cord, carrying handle, rubber feet, 115 V, 60 Hz, 15 lbs net weight. Accepts
1⁄4" i.d. tubing. Note: For the classic Boil Water in a Bell Jar experiment, we recom- mend using the Two-Stage Vacuum Pump (AP1597).
AP1712 I $633.00
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AP4506 I $199.25 FLINN SCIENTIFIC I MIDDLE SCHOOL PHYSICAL SCIENCE