BEST SELLERS

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 hydrion 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.

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BLUE LITMUS PAPER

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 hydrion 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.

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$3.25 PKG (2)

Student Bacteria

We collected it ourselves, from local students. (Just a little joke, teachers.) What we have here is bacteria-experiment kit for classroom use with (2) 200ml bottles of prepared nutrient agar, (20) sterile Petri dishes, (10) sterile swabs, and (4) instruction sheets. Made for individual experiments or for use with (4) groups of up to (6) students. Use it to test common surfaces, do clean hands/dirty hands or clean mouth/dirty mouth tests of soap and mouthwash, or compare students' mouths to a dog's mouth, if you have a dog handy.

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BACTERIA KIT

Student Bacteria

We collected it ourselves, from local students. (Just a little joke, teachers.) What we have here is bacteria-experiment kit for classroom use with (2) 200ml bottles of prepared nutrient agar, (20) sterile Petri dishes, (10) sterile swabs, and (4) instruction sheets. Made for individual experiments or for use with (4) groups of up to (6) students. Use it to test common surfaces, do clean hands/dirty hands or clean mouth/dirty mouth tests of soap and mouthwash, or compare students' mouths to a dog's mouth, if you have a dog handy.

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$43.95 EACH

What's A Gram Weigh?

About 1/100 of this solid brass 100g cylindrical weight. Measures 1" dia x approx 15/16" tall with a 7/32" ID cup hook at the top. Pretty. Useful for calibrating scales. And accurate to within one percent, which is one reason for this great price, because if it hit 100g on the head every time, we'd be charging you a heck of a lot more.

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BRASS WEIGHT

What's A Gram Weigh?

About 1/100 of this solid brass 100g cylindrical weight. Measures 1" dia x approx 15/16" tall with a 7/32" ID cup hook at the top. Pretty. Useful for calibrating scales. And accurate to within one percent, which is one reason for this great price, because if it hit 100g on the head every time, we'd be charging you a heck of a lot more.

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$5.25 EACH

Kiddlescope

My First Microscope from GeoSafari® Jr.® is a colorful plastic 8X binocular inspection scope for pre-preschoolers. Includes a built-in white LED top illuminator, over-sized rubber eyecups and simple focus knob. Fixed stage holds flat or 3D objects, so there's no need for slides. All you add is (3) "AAA" batteries and a bunch of stuff for them to peer at, like insects and coins.

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GEOSAFARI® JR.® KIDS MICROSCOPE

Kiddlescope

My First Microscope from GeoSafari® Jr.® is a colorful plastic 8X binocular inspection scope for pre-preschoolers. Includes a built-in white LED top illuminator, over-sized rubber eyecups and simple focus knob. Fixed stage holds flat or 3D objects, so there's no need for slides. All you add is (3) "AAA" batteries and a bunch of stuff for them to peer at, like insects and coins.

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$21.95 EACH

Slide Stain

Get 5ml of microscope slide stain in a nifty plastic squeeze bottle with a dropper top and white plastic screw cap. Bottle is approx 2" tall x 3/4" dia, like a standard food-coloring dispenser. You pick red or blue stain.

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BLUE SLIDE STAIN

Slide Stain

Get 5ml of microscope slide stain in a nifty plastic squeeze bottle with a dropper top and white plastic screw cap. Bottle is approx 2" tall x 3/4" dia, like a standard food-coloring dispenser. You pick red or blue stain.

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Pretty Sharp

Optimize the power of your microscope and get the sharpest possible image with a drop of clear, colorless immersion oil between the lens and your slide. This 0.5 oz tube of low-viscosity Resolve® Immersion Oil from Richard-Allan Scientific has a refractive index of 1.5150. It is non-drying and non-hardening, and will not damage lenses or valuable slides. But it will definitely enhance your view!

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IMMERSION OIL

Pretty Sharp

Optimize the power of your microscope and get the sharpest possible image with a drop of clear, colorless immersion oil between the lens and your slide. This 0.5 oz tube of low-viscosity Resolve® Immersion Oil from Richard-Allan Scientific has a refractive index of 1.5150. It is non-drying and non-hardening, and will not damage lenses or valuable slides. But it will definitely enhance your view!

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$12.50 EACH

Rubber Plugs

They're gray rubber stoppers, 3/4" dia at the top, threaded at the bottom to fit 17mm ID bottles. They're 7/8" long OA, with a threaded portion 7/16" long. Which doesn't matter a whole lot if you're using them for their most obvious use, which is to glue them to your neck for the world's absolutely best Frankenstein costume!

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RUBBER STOPPER

Rubber Plugs

They're gray rubber stoppers, 3/4" dia at the top, threaded at the bottom to fit 17mm ID bottles. They're 7/8" long OA, with a threaded portion 7/16" long. Which doesn't matter a whole lot if you're using them for their most obvious use, which is to glue them to your neck for the world's absolutely best Frankenstein costume!

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$1.95 PKG (20)

Condense Something

A condenser is an integral part of any distillation operation, and this 300mm Graham condenser, with 24/40 ground-glass joints, sends you on your way. As always, we ask no questions, so feel free to follow your experimental dreams. Inlet/outlet ports are 3/8" diameter.

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300 ML CONDENSER

Condense Something

A condenser is an integral part of any distillation operation, and this 300mm Graham condenser, with 24/40 ground-glass joints, sends you on your way. As always, we ask no questions, so feel free to follow your experimental dreams. Inlet/outlet ports are 3/8" diameter.

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$39.95 EACH

BOTTLEMANIA

Zillions of little bottles. Renegades from a pharmaceutical company, leftover unfilled from runs of exotic we-know-not-what. We have divided them into two basic shapes: A, Narrow Mouth, h (Narr Mo) have a 10mm dia. x 4mm long neck on top of a squarish shoulder, a 13mm dia. 3mm rim and a 7mm dia. opening; B, Wide Mouth, (Wide Mo) have a 16mm dia. x 4mm long neck on top of a squarish shoulder, a 19mm dia. x 3mm rim and a 12 or 13mm dia opening. Height refers to height overall, and dia. to the body dia. Great items for essential oils,  the doll house (for kids old enough not to swallow them), to hold tiny wild flowers, for decorative art work or individual cruets. All quite sturdy glass. In the real world, you would pay from $75 (smallest) to $225 (biggest) for 288 of these, which is the smallest quantity you could get!! Narrow mouth bottles take a #00 cork. (Click Here. Our part number 88746) Wide mouth bottles take a #3 cork. (Click Here. Our item number 88748)

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15ML AMBER BOTTLE, WIDE MOUTH, 32mm Dia. x 57mm Tall

BOTTLEMANIA

Zillions of little bottles. Renegades from a pharmaceutical company, leftover unfilled from runs of exotic we-know-not-what. We have divided them into two basic shapes: A, Narrow Mouth, h (Narr Mo) have a 10mm dia. x 4mm long neck on top of a squarish shoulder, a 13mm dia. 3mm rim and a 7mm dia. opening; B, Wide Mouth, (Wide Mo) have a 16mm dia. x 4mm long neck on top of a squarish shoulder, a 19mm dia. x 3mm rim and a 12 or 13mm dia opening. Height refers to height overall, and dia. to the body dia. Great items for essential oils,  the doll house (for kids old enough not to swallow them), to hold tiny wild flowers, for decorative art work or individual cruets. All quite sturdy glass. In the real world, you would pay from $75 (smallest) to $225 (biggest) for 288 of these, which is the smallest quantity you could get!! Narrow mouth bottles take a #00 cork. (Click Here. Our part number 88746) Wide mouth bottles take a #3 cork. (Click Here. Our item number 88748)

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$3.95 PKG (12)

Microscope Accessories

You bought one of our excellent microscopes - now you need interesting, good-quality slides. You need our Microscope Accessory Kit. The kit includes The World of the Microscope, a well-illustrated 48-page book that explains the instrument and how to use it. You get supplies to create your own slides, including a box of (72) standard glass slides, about 1" x 3", with ground edges; tweezers with which to position your specimens; a 4" glass dropper with a rubber bulb from which to drop small amounts of liquid onto the specimens; and (100) square pieces of #1 thickness cover glass to place over them. A great way to get focused.

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BEGINNERS MICROSCOPE ACCESSORY KIT

Microscope Accessories

You bought one of our excellent microscopes - now you need interesting, good-quality slides. You need our Microscope Accessory Kit. The kit includes The World of the Microscope, a well-illustrated 48-page book that explains the instrument and how to use it. You get supplies to create your own slides, including a box of (72) standard glass slides, about 1" x 3", with ground edges; tweezers with which to position your specimens; a 4" glass dropper with a rubber bulb from which to drop small amounts of liquid onto the specimens; and (100) square pieces of #1 thickness cover glass to place over them. A great way to get focused.

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$16.95 EACH

Clearly Tubes

Like the ubiquitous oxygen tubing found in medical settings everywhere, we have this clear acrylic tubing available in 23-1/2" long pieces. Tubes measure 9/32" OD x 5/32" ID. Great for fountains, science fair projects, Halloween costumes, unique holiday decorations and modern sculpture.

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5/32" CLEAR ACRYLIC TUBING

Clearly Tubes

Like the ubiquitous oxygen tubing found in medical settings everywhere, we have this clear acrylic tubing available in 23-1/2" long pieces. Tubes measure 9/32" OD x 5/32" ID. Great for fountains, science fair projects, Halloween costumes, unique holiday decorations and modern sculpture.

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$3.50 PKG (10)

This Arm Gives You A Hand

This 10" distilling arm, with 24/40 ground-glass joints is essential for any distillation project. And you know you've got distillation projects. Use this arm to connect a boiling flask to a condenser, for example.

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10" DISTILLING ARM

This Arm Gives You A Hand

This 10" distilling arm, with 24/40 ground-glass joints is essential for any distillation project. And you know you've got distillation projects. Use this arm to connect a boiling flask to a condenser, for example.

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$19.35 EACH

3/16” BRASS TUBING VARIETY PACK

Brass connectors for 3/16” ID lab tubing. Connectors themselves have 1/8” IDs. Our variety pack is (2) each of elbow connectors, T-connectors, and union (straight) connectors.

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CONNECTORS, 3/16" BRASS, 2 EA. ELBOW, T, UNION

3/16” BRASS TUBING VARIETY PACK

Brass connectors for 3/16” ID lab tubing. Connectors themselves have 1/8” IDs. Our variety pack is (2) each of elbow connectors, T-connectors, and union (straight) connectors.

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$4.95 PKG (6)

Twosome With Divider

This connector is 3-3/8" of straight "in-line" plastic with 5/8" ridges only and a 13/32" I.D. It has a separator rib around its mid-section.

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IN-LINE CONNECTOR

Twosome With Divider

This connector is 3-3/8" of straight "in-line" plastic with 5/8" ridges only and a 13/32" I.D. It has a separator rib around its mid-section.

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$2.95 PKG (10)

Three-Way Stop

This 33" long x 1/8" dia latex-free medical tubing has a three-way stopcock with (2) 1/4" OD outlet ports and a 5/32" sleeved fitting at the opposite end. Made in the USA for Smiths Medical.

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33” X 1/8” LATEX-FREE MEDICAL TUBING

Three-Way Stop

This 33" long x 1/8" dia latex-free medical tubing has a three-way stopcock with (2) 1/4" OD outlet ports and a 5/32" sleeved fitting at the opposite end. Made in the USA for Smiths Medical.

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$3.75 PKG (3)

GRADUATION DAY

Very nice heat resistant graduated cylinders. Sizes are as shown and each is clear glass with a pouring lip.

 

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GRADUATED CYLINDERS, SET (3) 10,100,250ML HEAT RESISTANT

GRADUATION DAY

Very nice heat resistant graduated cylinders. Sizes are as shown and each is clear glass with a pouring lip.

 

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$17.95 PKG (3)

Stainless Tray

Use straight pins to position specimens in this slope-sided 11-1/4" x 7-3/8" x 1-3/8" deep aluminum dissection tray. A 3/8" layer of white wax covers the bottom. Excellent addition to the laboratory or classroom.

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ALUMINUM DISSECTION TRAY WITH WHITE WAX

Stainless Tray

Use straight pins to position specimens in this slope-sided 11-1/4" x 7-3/8" x 1-3/8" deep aluminum dissection tray. A 3/8" layer of white wax covers the bottom. Excellent addition to the laboratory or classroom.

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$13.25 EACH

Periodic T-Shirt

Wear this to your chemistry final and see how far you get. 100% pre-shrunk black cotton T-shirt with a color-coded periodic table that includes glow-in-the-dark enhancements to the radioactive elements. Made right here in Chicago by guys with high GRE scores. Large only, because it's a big table.

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ELEMENTAL T-SHIRT

Periodic T-Shirt

Wear this to your chemistry final and see how far you get. 100% pre-shrunk black cotton T-shirt with a color-coded periodic table that includes glow-in-the-dark enhancements to the radioactive elements. Made right here in Chicago by guys with high GRE scores. Large only, because it's a big table.

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$17.95 EACH

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