
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" | |
![]() |
88909 MORT & PEST, 600ML | 6-1/2" OD x 2-15/16" | 6-3/16" |
Zillions of little bottles. Renegades from a pharmaceutical company, leftover unfilled from runs of exotic we-know-not-what. We have divided them into three 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; C, Sloped Shoulder, (Sl Sh) have roughly 5-6mm long neck that tapers from the soft shoulder to 15mm dia, with a 19mm dia x 3mm rim and a 12-13mm dia. opening. Height refers to height overall, and dia. to the body dia. in the table below. Great items for the doll house (for kids old enough not to swallow them), to hold tiny wild flowers, for decorative art work, individual cruets, or just to hold and marvel at. 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. (Our part number 88746) Wide mouth and sloped shoulder bottles take a #3 cork. (Our item number 88748)
| Dia. | Height | ||||
|---|---|---|---|---|---|
![]() |
26712 NARR MO 2ML CLEAR | 15mm | 32mm | Details | |
![]() |
4735 NARR MO 5ML AMBER | 23mm | 37mm | Details | |
![]() |
31492 NARR MO 5ML AMBER | 21mm | 39mm | Details | |
![]() |
31495 NARR MO 5ML AMBER | 21mm | 38mm | Details | |
![]() |
37112 SLOPE SH 20ML AMBER | 26mm | 56mm | Details |
Oodles of tiny clear glass tubes. Open on each end, they'll work wonders when connecting rubber tubing or sticking into stopper holes (#27918 is especially perfect for that). Flint glass, so nothing too hot, OK?
![]() |
27921 TINY TUBE, 5 X 150MM | |
![]() |
27915 TINY TUBE, 8 X 61MM |
Great for chokes, toroids, RFI suppression and much more. Our ferrite cores are attracted to magnets, but are not magnetic themselves. Edges are slightly beveled. 29122 is 1" O.D. x 5/8" I.D. x 1/4" thick. 35235 is 3/4" O.D. x 7/16" I.D. x 1–1/8" thick. 29180 is 1/2" O.D. x 1/4" I.D x 3/16"thick.
![]() |
29122 FERRITE CORE, 1" | |
![]() |
29180 FERRITE CORE, 1/2" | |
![]() |
35235 FERRITE CORE, 3/4" |
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 | |
![]() |
91831 6" X 6" SCREEN | |
![]() |
88597 DOUBLE CLAMP | |
![]() |
88195 LAB STAND | |
![]() |
88186 SINGLE CLAMP |
A classic milky-white, translucent plastic bottle with a shampoo-style cap. No shampoo? Fill it with hand lotion, vitamin pills, a personal-size portion of almost anything. The 1.5 oz bottle is 2-7/8" high, including the cap, x 1-1/2" dia. The neck has a 1/2" inside dia. Lined up, (10) of them have a clean, crisp look.
![]() |
32657 WHITE BOTTLE |
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.
![]() |
91185 TUNING FORK | |
![]() |
91772 TUNING FORKS, SET |
WARNING: CHOKING HAZARD-This toy is or contains a marble. Not for children under 3 yrs.
Big 1" marbles. Black or white. Little 1/2" marbles. Black, white or really cool iridescent colors. We'll pick out a handful for you - out of the (15) you should get at least one or two shooters.
![]() |
28969 ASSORTED MARBLES |
Budding lapidarians will lap up this rock polishing kit which is so complete it even contains some rocks. The polishing tumbler has a (3) lb. ((1) qt.) fifteen sided rubber barrel and is driven by a 115 VAC motor. Overall dimensions are 6" x 6" x 7-1/2" high. In addition to the tumbler, the kit includes an assortment of jewelry findings and a detailed manual giving you easy to follow instructions. But don't think of it only as useful for jewelry making. As a hobby, our Uncle George for many years collected and polished a wide variety of rocks which he found interesting and made beautiful in and of themselves.
![]() |
89758 REPLACEM'T ABRASIVES | |
![]() |
80276 ROCK POLISHING KIT |
A clear-glass, heat-resistant, volumetric flask with a ground glass neck and mating glass stoppers. These flasks are calibrated either at 500ml or 1000ml depending on which size you need. Both are around 12" tall. Not into lab work? Try it for techie salad dressings! Ain't surplus cool?
![]() |
91700 FLASK, 1000ML | |
![]() |
91699 FLASK, 500ML |
$9.95
EACH
Out of Stock. Check Back Soon! |
WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 yrs.
Pop one of these roughly 1-1/4" dia stones into the toe of a sock, smash it with a hammer, and be the first person ever to see your real-as-Nature-makes-it geode!! Ninety percent of them have the familiar beautiful white crystals inside. Formed by volcanic action, they are found all over the world, but ours are from Mexico. There is no way to tell from the outside if they have crystal centers, but we will send you two just to raise your odds, and we haven't had a dud yet in our stores!! Much much more fun and satisfaction than buying one already cracked.
![]() |
88823 GEODES |
Click a phrase to shop for products associated with that phrase (AKA "Tag"). More popular tags appear bigger. Learn more »