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Soil Test Kits
The budding home scientist and horticulturist will both delight in the ease with which this self contained soil test kit brings discovery. The kit measures not only ph., but also Nitrogen, Phosphate and Potash content and contains material for 40 tests. Since these are the essential ingredients affecting plant nutrition, we see a science project in the making: experimental plant growth in soils with different amounts of acidity and/or nutrients. From Luster Leaf(tm), the kit is entirely self contained and includes complete instructions for use and explanations. Be careful, please, the kit does have chemicals and should not be used by young children without supervision.
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88690 MULTI SOIL TEST KIT |
Lab Stand
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" RINGSUPPORT RING |
$6.95
EACH
Out of Stock. Check Back Soon! |
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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 |
Ultra Petri Dish
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 |
Anti-Zap Bag
An anti-static bag for small, dull electronic components who aren't interested in getting a charge out of life. The zip-sealed silver-gray plastic bag is 4" x 5-5/8" overall, with a bottom gusset and a 3-1/4" x about 3-3/4" usable area. It looks opaque but is translucent when held to the light.
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32942 ANTI-STATIC BAG |
Battery Holders
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 |
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 |
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Me, Me, Me, Me, Mee
You can start with our single aluminum tuning fork, 2-tined and 7-1/2" long. It vibrates at 256 hz, and is labeled "C". Or you can order the set that has (8) forks and a mallet with a rubber-tipped plastic head. The forks are labeled low-C to high-C and come in a fitted, latched wooden box. Unfortunately, C.J., who has perfect pitch, tells us that his pitch is more perfect than most of the tuning forks. He also says you can file the tips, tuning them to an electronic keyboard until they're perfect - and we think there's a certain cachet to telling people you tuned the forks yourself. But they are perfect, if you're using them for things like teaching principles of sound or driving the chihuahua crazy.
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91185 TUNING FORK | |
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91772 TUNING FORKS, SET |
Dropper
Eye dropper, tongue dropper, test tube dropper, petri dish dropper, anywhere dropper. Use this 3" glass dropper, with a rubber squeeze bulb to drop small amounts of liquid wherever you think they should go. You will have to measure by counting drops, though, because there are no markings on it. Also, it is called "3" because that is about how long the glass tube is. Overall, it is 4" long.
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89039 DROPPER, 3" |
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Tootin' Our Laser
We don't like to brag, but it's tough not to in a case like this. This is a wonderful pen-shaped laser pointer, 5-1/4" long, flat black or silver with gold pocket clip and head. It throws a red point a loong way (we've thrown it two city blocks at night, and it would've gone farther, but buildings got in the way). And what are we so proud of? We've seen a very similar item-not identical, mind you, but essentially the same-in one of those glossy, toys-for-grown-men catalogs. Their price? $40! We're proud not to be profit-mongers, buy it here and you can take pride in your smart shopping habits. Batteries included. (Please note color change to include silver.)
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91071 LASER POINTER |
Chinese Rifflers
Riffler files are most prized by sculptors, wood carvers, model makers and similar fashioners of precision objects. They come in a variety of flat, round and triangular shapes. They are usually pointed and always have a delicate curve toward the point which makes them particularly useful for working in tight and curvy spots. We have a set of (10) in an attractive red plastic case. They are 3 x 180 mm size (about 7"), and were made in China for the King Manufacturing Co. Very nice quality at a very nice price. They can cost as much as $4.00-$5.00 apiece in regular outlets.
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10955 RIFFLER FILES |
Diamond Files
A set of (5) needle files, 5-1/2" long, which are coated with industrial diamonds. Perfect for sharpening tools, or doing filing on hard metals etc. when you are sculpting or welding. The shapes are the usual assortment of flat, round and in between shapes.
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89397 DIAMOND FILES |
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