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Screw Compressor Clamp

Used to regulate flow through a flexible tube. The screw driven jaw can be accurately adjusted in any position from closed to fully open to allow you to get just the rate of flow you want. The swing-away bottom jaw design lets you install over already connected tubing. The jaw opens to a maximum of 7/8" high and is 15/16" wide. Made of nickel plated steel, all edges are rounded to avoid cutting the tubing.

88189 CLAMP, SCREW
$4.50 PKG(2)

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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
$3.50 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.

88217 BLUE LITMUS PAPER
$2.95 PKG(2)
88219 HYDRION PH PAPER
$1.95 EACH
88218 RED LITMUS PAPER
$2.95 PKG(2)

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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 boxes are 8-3/4" x 6-3/4" x 1-1/3" with hinged lids. They are stackable, and you might get them in a variety of colors.

90069 BOX FOR 100 SLIDES
$6.95 EACH
 

Hemostatic Heaven

Hemostats are the clamplike devices dangling from veins and arteries in melodramatic operating scenes. Our particular collection are Pakistani surgical-grade instruments made of magnetic stainless steel. As such we rate them pretty good, but not fantastic. Hemostats look like little pliers. The jaws are relatively fine, with rounded tips. The inside faces are lightly serrated to get a grip on tubing or body plumbing. And the handles are much longer than the jaws. Now the heavenly part. Great hobby clamps that can be worked into small areas. Fine heat sinks for electronics. Good hook extractors for trout fisherpeople. Excellent tubing clamps for flow-sensitive chemistry experiments. Sizes are approximate length.

3697 HEMOSTAT, CURV TIP 5-1/2
$3.50 EACH
23652 HEMOSTAT, CURV TIP 7-1/2
$5.75 EACH
91105 HEMOSTAT, STR TIP 12"
$10.75 EACH
6273 HEMOSTAT, STR TIP 7-1/2"
$5.95 EACH

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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  
88314 MORT & PEST, 130ML 4" OD x 1-3/4" 4-3/4"
$6.75 EACH
88909 MORT & PEST, 600ML 6-1/2" OD x 2-15/16" 6-3/16"
$13.95 EACH

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Real Corks!!

We have obtained a large number of real natural corks, mostly surplus with a few fill-ins bought commercially. They range across the popular sizes used in science labs to seal vessels (drill your own holes for glass tubing, etc) and to use as floats. Or just use them to seal bottles that don't have closures or cry out for a decorative seal.

    Top Dia. Bottom Dia.    
92688P25 CORK #0 3/8" 9/32" Details
$2.00 PKG(25)
88746 CORK, #00 5/16" 7/32" Details
$2.50 PKG(25)
92718 CORK, #1 7/16" 5/16" Details
$2.00 PKG(25)
89230 CORK, #10 1" 3/4" Details
$2.95 PKG(8)
89232 CORK, #16 1-3/8" 1-1/16" Details
$2.50 PKG(4)
1711 CORK, #2 1/2" 7/16 Details
$2.50 PKG(25)
89234 CORK, #20 1-5/8 1-5/16" Details
$3.50 PKG(3)
88748 CORK, #3 9/16" 7/16" Details
$2.25 PKG(20)
23594 CORK, #5 11/16" 9/16" Details
$3.00 PKG(20)

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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 Out of Stock.
Check Back Soon!
91831 6" X 6" SCREEN
$1.50 EACH
88597 DOUBLE CLAMP
$28.95 EACH
88195 LAB STAND
$13.95 EACH
88186 SINGLE CLAMP $9.95 EACH Out of Stock.
Check Back Soon!

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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
$4.95 EACH
91855 WORK STAND W/MAG.
$9.95 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 or beveled 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
$1.95 EACH
89445 STANDARD MICROSCOPE SLIDES
$5.50 EACH
52261 WELL SLIDES
$8.95 EACH

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