
AKA hand boiler. An exotic bit of hand blown glass with a bulb at top and bottom connected by some zippy tubing that spirals, loops, and/or jogs. In the closed system is some colored liquid (methyl chloride) that is very light. Hold the lower bulb in you hand and as the air in the system is warmed it pushes the fluid through the loops to the upper chamber. When all the liquid is pushed out of the lower bulb, expanding air will bubble through the tubing making it appear that the liquid is boiling. WARNING! The glass is fragile and the liquid is nasty. If you drop the thing on e.g. the kitchen tile, it will eat the finish off the tile and the stain in the liquid will permanently stain the floor. So don't let kids handle this item unsupervised. About 7" tall, it is a favorite in our stores.
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6199 LOVE METER |
See psychedelic patterns the safe way! Press your hand on this 6" x 6" sheet of liquid crystal and leave a print of swirling colors that, like the mood ring of yore, you can use as a sign of your mood. The pattern will blend and fade in seconds as the crystals react to temperature. Tiny liquid crystals inside the film-like material react to heat by changing colors. As science, it demonstrates the way liquid crystal displays work. And you can cut it into pieces to incorporate into a science project. Or just leave it out for guests to play with when the party turns boring.
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91582 LIQUID CRYSTAL SHEET |
We have the perfect thermocouple probes to probe your every temperature! Surface, moving surface, air, insertion and general purpose probes, with appropriate temperature ranges, are durable, well-made tools that are built to last. The 9000 series probes are compatible with any meter that accepts a mini-connector plug, so you can use your favorite. The actual probes range from 4" to 7" and have 5" comfort-grip handles. See the table below for the probe type, description, cable length and Fahrenheit temperature range of the tip. The Item number includes the manufacturer's model number. All are made by Alnor.
| Type | Description | ||||
|---|---|---|---|---|---|
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28647 PROBE, 9280 | J | Reduced Tip | Details |
Affordable, adaptable lab equipment for serious scientists with laughable budgets. The basic stand is heavy black metal 8" long x 5" wide x 1" high with a 19-1/2" x 3/8" dia support rod screwed into it. Position a beaker or bunsen burner on the stand and build the configuration you need above it. Both of the Burette clamps and the ring attach to the rod with thumbscrew clamps. The Burette clamps have wing nuts so they can be adjusted to any angle. The single clamp extends 4" from the rod, with rounded, uncoated, adjustable metal jaws with spring tension and a wing nut. The double clamp like it has rubber-coated jaws. The 3" metal support ring holds the 6" x 6" heavy-gauge steel-mesh burner screen with crimped edges. Nice, solid equipment at a rare price.
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88192 3" SUPPORT RING | |
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91831 6" X 6" SCREEN | |
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88597 DOUBLE CLAMP | |
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88195 LAB STAND | |
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88186 SINGLE CLAMP |
A great find: sterile plastic petri dishes, 100mm dia x 15mm deep, with a loose fitting lid. Great for growing cultures for your science fair experiments. Our each (20) dishes and lids in a sealed, sterile package.
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52554 PETRI DISH, 100MM |
We have a number of battery holders, constantly changing in detail. They may be plastic, they may be metal. They all have either simple short wire leads or connection points. In all cases, they hold a number of batteries and connect them internally in series. The table shows the number and type of batteries held, the final voltage, material, lead type and price.
| No. | Type | ||||
|---|---|---|---|---|---|
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21337 BATTERY SNAP W/LEADS | (1) | 9 Volt | Details | |
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93221 BLUE SINGLE D CELL HOLDER | (1) | D | Details | |
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35065 HOLDER, 1 "N" | (1) | "N" | Details | |
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92475 HOLDER, 1-AA | (1) | "AA" | Details | |
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92476 HOLDER, 2-AA | (2) | "AA" | Details | |
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92477 HOLDER, 3-AA | (3) | "AA" | Details | |
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93190 HOLDER, 4-AA | (4) | "AA" | Details |
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 |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Ancient Chinese secret for assembling dolls (and they ought to know, given the number of dolls assembled in China): Googly eyes that kids will laugh at are good. Googly eyes kids can pick off and swallow are not good. These 7/16" dia white-plastic eyes with loose 1/8" dia pupils have 1/2" x 1/8" dia striated shafts. Lock washers fit snugly onto the shafts so they stay safely where they belong. We'll send you (6) packs of (6) eyes each - enough for (18) teddy bears or (36) stuffed cyclops dolls.
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33285 SAFETY GOOGLE EYES |
Surplus - with a silver lining! We have almost half a hundred rolls of 18-1/2" wide mylar film, the shiny side printed with a variety of balloon designs - happy birthday, happy retirement, happy other things - and a matte silver finish on the other (picture the two sides of aluminum foil). We'll send you a roll of 20 ft. Lots of craft-project potential. Start with a shiny birthday kite. Move onto hand-made hair scrunchies. Jim suggests wrapping yourself in it if your car stalls in the Arctic. Philip, always the adventurer, is considering a do-it-yourself dirigible.
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33277 MYLAR MATERIAL |
A fine concept and pretty successful execution. Weighted bases hold fully adjustable clips and lenses for delicate hands–free work. The Helping Hand w/solder has a 2” high base connected to (2) alligator clips via (3) universal joints and a 4–1/2" sliding beam, and to a 2–1/2" dia roughly 3X magnifier via another universal joint on the sliding beam. It also adds a holder for your soldering iron, plus a hole and thumbscrew in the base to firmly position it. The larger Work Stand has a 3–1/2” x 4–3/4” stand with a 2–3/4” square x 3/8” deep reservoir to hold small parts, an L–shaped sliding beam with (2) alligator clips, and another L-shaped beam with a 3–1/2” lens, about 4X magnification. Joints adjust every which way. The set screws can all be hand–tightened, but we suggest a small pliers to secure the hefty 4X lens. Think of the clips as extra hands to hold wires, components, beads, what-have-you while you perform some operation on them with your own two hands.
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92280 HELPING HAND W/SOLDER | |
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91855 WORK STAND W/MAG. |
Our aluminum canisters with clear glass pull–off lids are cool. The smaller canisters are aluminum–colored, a set of (20) 1–1/4” dia x 3/4” deep in a 6–1/2” x 5–1/4” x 7/8” lightweight aluminum box with a hinged lid. When the box is shut, a layer of foam padding inside the lid presses down on the canisters, keeping them securely closed. If you need slightly larger canisters, and a cardboard box will work instead of a carrying case, try our colorful display of anodized tins. They are packaged in sets of (12) and come in great assorted colors and are 2” dia x 7/8” deep. Each is an ideal carrying case for paints, many different screws, or other sets of small items or quantities that must remain separate. Prices are per set.
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91895 (12) 2" ASSORTED COLORS | |
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89964 (20) 1-1/4" ALUMINUM COLORED |
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