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Screckplex
Depending upon your point of view, this is a reducing coupler or an expanding one. It is a very flexible gum rubber or latex tube with one end sized to take a 1/16" OD glass or metal tube and the other for a 1/8" OD tube. The middle is an arthritic bulge and it is 1-5/8" long OA. Of course you can use it to create a fine spray or stream of liquid, as a tiny straw, as a tip on a pointer, or as the object of a "Can you name this?" contest. Better not use "Screckplex" as the answer though.
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24452 LATEX CONNECTOR |
Wrap Around Heating Element
Resistive element insulated and wrapped in soft, flexible (fiberglass) jacket. The wrapped section is about 27 inches long and about 3/16" in diameter. Each end has a 4 inch insulated lead, but one end is a single strand solid wire and the other is a seven strand braid. We haven't any idea where the marriage takes place! Anyway, they're rated at 90 watts. Plug 'em into 110 VAC and the thing heats up to the point that it's quite hot to the touch - too hot to hold onto. Wrap it around whatever it is that you need to keep warm and make your own heating systems. Make yourself a coil and you can probably keep your coffee pot hot. Or operate it at 12 volts as a telescope dew chaser. You'll notice some smoke when you plug it in the first time, but this won't happen once it's burned in. Happy heating by Hot Watt. Melanie, Tory, and Donna all want one!
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1490 HEATING ROPE |
$1.95
EACH
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Burner Stands
Three-legged steel stands for cooking above burners in the lab. The small unit stands 6" tall with a 2–1/4" ID (3–1/4" OD) burner ring. The large one stands 9" tall with a 3–1/4" ID (4–1/2" OD) burner ring. Legs are 1/4" wide chromed steel and angle outward slightly. Burner rings have a grey baked enamel finish. Legs screw into burner rings and have adjusting nuts. Sturdy construction.
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89735 BURNER STAND, 6" | |
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89736 BURNER STAND, 9" |
Teeny Tiny Tubes
Oodles of tiny clear glass tubes. Open on each end, they'll work wonders when connecting rubber tubing or sticking into stopper holes (#27918 is especially perfect for that). Flint glass, so nothing too hot, OK?
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27921 TINY TUBE, 5 X 150MM | |
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27918 TINY TUBE, 7 X 75MM | |
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27915 TINY TUBE, 8 X 61MM |
Hot Hot!!
This flash heating element out of a coffee maker really heats in a hurry!! It is designed only for use with a regulating heat switch (not included) and will melt itself in less than a minute if turned on un regulated with no water or other contents. It draws 8 amps @ 120 VAC max. 2" dia x 2-1/2" tall, OA. It holds about 1 oz. and has (2) spade terminals. A wonderful item when used correctly.
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32451 FLASH HEAT POT |
Funnel? Piece of Cake
Two sizes of Bomex separatory funnels with ground glass stoppers and petcocks. The 100ml funnel is 9-1/2" long overall. The 500ml is 14-1/2" overall. An excellent price for basic lab glassware.
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91702 SEP. FUNNEL, 100ML | |
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91703 SEP. FUNNEL, 500ML |
Clearly a Flask
A clear-glass, heat-resistant, volumetric flask with a ground glass neck and mating glass stoppers. These flasks are calibrated either at 500ml or 1000ml depending on which size you need. Both are around 12" tall. Not into lab work? Try it for techie salad dressings! Ain't surplus cool?
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91700 FLASK, 1000ML | |
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91699 FLASK, 500ML |
It's A Snap
Every lab needs one: this spring-loaded metal pincer lets you rotate a glass tube against a cutting blade, then press down to snap the tube just where you want it snapped. Simple and precise, for tube diameters from tiny to 1-1/2".
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91921 GLASS TUBE CUTTER |
Glass Condenser
A great value if you're looking for a 200ml Liebig condenser with drip tip. 14" long x approx 1" dia. center section. 8" long condensing chamber. 4mm inside dia bottom and 22mm inside dia top. 3mm inside dia nipples on the side. Made of heat-resistant glass. A must for every lab.
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91697 LIEBIG CONDENSER, 14" |
Peltier Heat Pump
High tech comes to Am Sci & Surp!! It is here in the form of a Peltier junction, a thermo-electric device that translates electric power into heat, and perversely, into cool. Apply current @ 3-12 VDC to the gizmo and it extracts thermal energy from one face, thereby cooling it. The heat is dumped onto the other face, thereby heating it. Please note: you must use a heat sink on the hot side or the junction will fry itself, since it can quickly create a 65° C temperature differential in a no load situation. Stack two, or build a cascade to increase the thermal differential created. Or run it backwards. Apply heat or cold to the relevant face and produce a current. Amazing for science projects and experiments. Practical for coffee warmers, beer coolers and mini-refrigerator or warming oven applications. Comes with instructions. Large is 1-9/16" sq. x 3/16" thick.
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89143 LARGER PELTIER JUNCTION |
Glass Funnel
This funnel looks delicate, but it's Pyrex® so heat won't hurt it. The tough little glass funnel has a 75mm (approx 3") ID mouth and an 80mm long neck with a 6mm ID fluted outlet. No markings.
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92613 GLASS FUNNEL |
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