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Magnetic Picker Upper

A telescoping arm rather like a car radio antenna holds an alnico magnet at the end via a double ball joint. Closed is 5/16" dia x 5-1/2" long, perfect for a shirt pocket, right down to the clip. Open it is just under 2 ft long including the swivel head, perfect for fishing under the radiator, in the depths of the bilge or at the back of the rattler's cage.

89589 TELESCOPIC MAGNET
$2.95 EACH

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Test Tube Rack

Blue plastic test tube rack, about 8" long x 2-1/2" wide x 3-1/4" tall OA. It has a plate with (6) holes for full test tubes, the end two being 1-1/16" dia the others 3/4" dia. In front of this are (6) pegs to hold clean inverted test tubes. It of course can be used to hold tools, drying pasta or other, non-lab objects.

89323 TEST TUBE RACK
$2.50 EACH

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Litmus Paper

Chemically treated paper strips to test for acid or base (alkaline) solutions. Use the blue for acids, the red for bases. The more sophisticated pH test paper strip indicates pH from 1 (bright red) to 14 (dark brown). Values in between can be read by comparing with a color chart that comes with the strips. All have (100) strips of test paper per vial.

on sale 88217 BLUE LITMUS PAPER
$1.75 PKG(2) (was $2.50)
on sale 88219 HYDRION PH PAPER
$1.75 EACH (was $1.95)
on sale 88218 RED LITMUS PAPER
$1.75 PKG(2) (was $2.50)

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Slide Boxing

The sport of the future? No, cork-lined polystyrene boxes for holding microscope slides, complete with numbered slots and inventory sheets on the lids. The smaller boxes are 5-1/2" x 3-1/2" x 1-1/2" with lift-off lids, and the larger are 8-3/4" x 6-3/4" x 1-1/3" with hinged lids and metal clasps. Both models are stackable, and you might get them in a variety of colors.

90069 BOX FOR 100 SLIDES
$6.95 EACH
90068 BOX FOR 25 SLIDES
$4.95 EACH

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Test Tubes!!

Test tubes, culture tubes, there doesn't seem to be a standard term for these standbys of every lab. The plastic tubes are 10 mm in dia. and 75 mm long. The glass are all flint, which means you cannot put them over a flame or heat anything in them. The assortment of glass tubes is from 10 to 14 mm dia x 50 to 100 mm long. We'll give you the best mix that our supplies can produce. Chances are you'll get all of one size in each order.

30032 GLASS TUBE ASSORTMENT
$2.00 PKG(20)
30034 PLASTIC TUBES 10MM X 75MM
$2.00 PKG(40)

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Mashers and Smashers

Porcelain mortars and pestles. Great heavy duty mortars, with sides that are easily 5/16" thick on the smaller ones, and up to 1/2" on the larger. The mortars are glazed outside, but rough inside, the better to grind, and have a pouring lip. The business ends of the pestles are unglazed, while the shafts are glazed. Very functional, very good looking!! So grind your own spices or lab concoctions as you prefer. You get a mortar and pestle as a single order.

    Mortar Dimensions Pestle Length  
on sale 88314 MORT & PEST, 130ML 4" OD x 1-3/4" 4-3/4"
$5.50 EACH (was $6.50)
on sale 88909 MORT & PEST, 600ML 6-1/2" OD x 2-15/16" 6-3/16"
$11.95 EACH (was $13.95)

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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.

88192 3" RINGSUPPORT RING
$6.95 EACH
91831 6" X 6" SCREEN
$1.25 EACH
88597 DOUBLE CLAMP
$27.95 EACH
88195 LAB STAND
$12.95 EACH
88186 SINGLE CLAMP
$9.95 EACH

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Positioner/Holder

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.

92280 HELPING HAND W/SOLDER
$3.95 EACH
91855 WORK STAND W/MAG.
$8.95 EACH

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Hang On There

Hang On There

Looking for a very, very, very long refrigerator magnet? At 15 ft, this 7/16" wide x 1/16" thick magnetic strip should just about go up one side, across the top, and down the other side. It's flexible, but can be broken if bent back against itself -- which means that small children can make craft magnets without having to cut the strip or themselves! We love it when a plan comes together!

34204 STRIP MAGNET
$2.95 (15FT)

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Slide Show

Microscope glassware for examination of blood, pond water, mold, and other minutiae. All of the microscope slides are optically clear glass 26mm x 76mm (about 1" x 3"), between 1mm and 1.2mm thick. The well slides, of course, have a concave well to hold a drop of liquid. Our each is a package of (12) well slides, or a box of (72) standard slides with ground edges. Cover glasses are the smaller and very thin pieces of glass used as the top of the glass slide sandwich. They are often used temporarily by simply dropping them onto a drop of liquid to flatten and spread it and to minimize evaporation. More confident microscopists will cement them in place to permanently preserve a specimen. Our each is a package of (100) cover glasses 18 mm square, #1 thickness (0.13mm to 0.17mm). If you need one, you need both.

89044 MICROSCOPE COVER GLASS
$1.75 EACH
89445 STANDARD MICROSCOPE SLIDES
$5.25 EACH
52261 WELL SLIDES
$8.95 EACH

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Double Vision

A clever twin-lensed loupe that clips on eyeglasses for hands-free magnification. Each 1" dia, 3.3-power glass lens is at the end of a thin metal arm and swivels easily. The metal clip mechanism is about 1-1/2" long, each lens and arm about 2-1/2" long. Use a single lens, or line two up to double the loupe to a 6.6 power. Individually, each has a 3" working distance. When they're used together, it's 1-1/2".

on sale 91793 2 IN 1 LOUPE
$7.50 EACH (was $8.50)

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