Useful for demonstrating momentum, conservation of energy and torque! The unit is suspended by two strong cords, which are wound around the shaft of the wheel and then released. The wheel will unwind as it falls but will wind itself back up as the momentum carries the wheel upward in the opposite direction. This oscillation process will continue for several moments as the wheel slowly loses momentum and travels less each time. Instructions included.
Useful for demonstrating momentum, conservation of energy and torque! The unit is suspended by two strong cords, which are wound around the shaft of the wheel and then released. The wheel will unwind as it falls but will wind itself back up as the momentum carries the wheel upward in the opposite direction. This oscillation process will continue for several moments as the wheel slowly loses momentum and travels less each time. Instructions included.
A very ecconomical apparatus to demonstrate that light and heavy objects fall at the same rate / accelaration in a vacuum. Apparatus consists of a 36" (910mm) long x 2.25" (55mm) diameter, transparent tube with a stopcock mounted in a rubber stopper on one end, and a solid rubber stopper on the other end. Supplied complete with a 13" long vinyl tubing for connection to a vacuum pump (not supplied), a metal disc and a feather.
A very ecconomical apparatus to demonstrate that light and heavy objects fall at the same rate / accelaration in a vacuum. Apparatus consists of a 36" (910mm) long x 2.25" (55mm) diameter, transparent tube with a stopcock mounted in a rubber stopper on one end, and a solid rubber stopper on the other end. Supplied complete with a 13" long vinyl tubing for connection to a vacuum pump (not supplied), a metal disc and a feather.
Build any type of voltaic cell with this safe, sturdy kit. Functions as a storage cell, coulometer, dry cell, or Daniel cell. Includes: opaque polypropylene 8-oz cell body with low profile, wide base to resist spills; porous cup, instructions, 10 labeled electrodes (2 each, copper, lead, zincs; 1 each, aluminum, carbon, iron, nickel). Screw-on plastic rim has 2 brass electrode holders which adjust to hold round or flat electrodes.
Build any type of voltaic cell with this safe, sturdy kit. Functions as a storage cell, coulometer, dry cell, or Daniel cell. Includes: opaque polypropylene 8-oz cell body with low profile, wide base to resist spills; porous cup, instructions, 10 labeled electrodes (2 each, copper, lead, zincs; 1 each, aluminum, carbon, iron, nickel). Screw-on plastic rim has 2 brass electrode holders which adjust to hold round or flat electrodes.
Open model. Shows all the parts of a motor. Operating voltage 4-6V. Supplied complete with color disc. 120x80x115mm.
Open model. Shows all the parts of a motor. Operating voltage 4-6V. Supplied complete with color disc. 120x80x115mm.
This unique hand generator is an easy yet effective way to teach how AC and DC electricity is produced. Banana plugs can be inserted into the different connectors to change from AC to DC electricity. The unit has a clear base for easy demonstration of connections. Includes an activity guide. Dimensions: 10" x 7" x 9".
This unique hand generator is an easy yet effective way to teach how AC and DC electricity is produced. Banana plugs can be inserted into the different connectors to change from AC to DC electricity. The unit has a clear base for easy demonstration of connections. Includes an activity guide. Dimensions: 10" x 7" x 9".
All parts easily visible. Rigid construction. Mounted on wooden board nicely polished. Workable on 3-4 volts AC or DC.
All parts easily visible. Rigid construction. Mounted on wooden board nicely polished. Workable on 3-4 volts AC or DC.
Comprising a primary coil of insulated copper wire wound on a cylinder and fitted with terminals, together with a secondary coil of fine insulated copper wire wound on a cylinder into which the primary coil may be fitted. A soft iron core, for inserting in the primary coil, is included. To demonstrate the concept of induced current and with the soft iron core the electromagnetic effect can also be demonstrated.
Comprising a primary coil of insulated copper wire wound on a cylinder and fitted with terminals, together with a secondary coil of fine insulated copper wire wound on a cylinder into which the primary coil may be fitted. A soft iron core, for inserting in the primary coil, is included. To demonstrate the concept of induced current and with the soft iron core the electromagnetic effect can also be demonstrated.
Includes 12 polypropylene samples. Determine the mass and volume of each sample. The slope of the straight line that results is the density of the material. The attractive wooden holder allows the teacher to see immediately when all of the specimens have been returned!
Includes 12 polypropylene samples. Determine the mass and volume of each sample. The slope of the straight line that results is the density of the material. The attractive wooden holder allows the teacher to see immediately when all of the specimens have been returned!
Includes 12 PVC samples. Determine the mass and volume of each sample. The slope of the straight line that results is the density of the material. The attractive wooden holder allows the teacher to see immediately when all of the specimens have been returned!
Includes 12 PVC samples. Determine the mass and volume of each sample. The slope of the straight line that results is the density of the material. The attractive wooden holder allows the teacher to see immediately when all of the specimens have been returned!
Set of 6. Aluminum, Brass, Copper, Steel, Lead, Zinc. With hooks. Diameter 25mm.
Set of 6. Aluminum, Brass, Copper, Steel, Lead, Zinc. With hooks. Diameter 25mm.
Set of 6. Aluminum, Brass, Copper, Steel, Lead, Zinc. With hooks. Diameter 25mm.
Set of 6. Aluminum, Brass, Copper, Steel, Lead, Zinc. With hooks. Diameter 25mm.
Made of polypropylene and can hold 10 standard 1" x 3" microscope slides back to back. The interior is grooved in a way to hold the slides in an erect position. Jar features domed and shallow thread screw cap.
Note:
All slides are shown in cross section (c.s.)
Set Includes:
• Q1 Lilium Anther Early prophase of meiosis
• Q2 Lilium Anther, Late prophase meiosis
• Q3 Lilium Ovary, First meiotic division
• Q4 Lilium Ovary, Second meiotic division
• Q5 Lilium Ovary, Third meiotic division
• Q6 Lilium Anther, First meiotic division
• Q7 Lilium Anther, Second meiotic division
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 12 prepared slides. Set Includes: O1 Lilium Anther early prophase of meiosis O2 Lilium Anther late prophase meiosis O3 Lilium Anther first meiotic division O4 Lilium Anther second meiotic division O5 Lilium Ovary first meiotic division O6 Lilium Ovary second meiotic division O7 Lilium Ovary third meiotic division.
Set Includes:
• P1 Corpus Luteum
• P2 Ovarian Follicles
• P3 Epididymis
• P4 Graafian Follicles
• P5 Placenta
• P6 Ductus Deferens
• P7 Ovary
• P8 Sperm
• P9 Testis
• P10 Fallopian Tube
• P11 Uterus
• P12 Embryo
• P13 Unfertilized Egg
• P14 Prostate
• P15 Proglottid
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1” x 3” slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Includes: Corpus Luteum Ovarian Follicles Epididymis Graafi an Follicles Placenta Ductus Deferens Ovary Sperm Testis Fallopian Tube Uterus Embryo Unfertilized Egg Prostate Proglottid.
Test tubes are made of premium grade polystyrene, precision molded with glass like clarity. Sold in packs of 500.
An affordable assortment of some of the most commonly used plastic labware items. Kit consists of 20 items shipped in a plastic storage box including: 1 beaker (100 ml), 1 beaker (250 ml), 1 graduated cylinder (10 ml), 1 graduated cylinder (100 ml), 1 funnel (65 mm top diameter), 1 drop dispenser bottle, 4 reagent bottles, 1 wash bottle, 3 plastic test tubes, 6 pipettes.
Borosil brand pipettes are manufactured from specially selected heavy-wall machine-drawn borosilicate accurate bore glass tubing. They have precision formed jets and bevel ground ends to resist chipping. The graduation marks are in durable white enamel or amber stain, both are resistant to normal laboratory agents and repeated washing. All the pipettes are individually measured and then marked. Accuracy is ensured between any two readings, because of uniformity of bore. The pipettes can be autoclaved and if necessary can be flamed for sterilization.
Graduation Interval: 5ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Graduation Interval: 5ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Note:
(l.s.) longitudinal section
(t.s) transverse section
(w.m) whole mount
(sec) special section
(c.s) cross section
Set Includes:
• C1 Bacteria (3 types) Smear
• C2 Saccharomyces Smear
• C3 Chlamydomonas (w.m.)
• C4 Penicillium (w.m.)
• C5 Volvox (w.m.)
• C6 Spyrogyra (w.m.)
• C7 Aspergillus (w.m.)
• C8 Euglena
• C9 Paramecium
• C10 Amoeba (w.m.)
• C11 Agaricus Section
• C12 Actinomyces
• C13 Hydra Budding (w.m.)
• C14 Chlorella (w.m.)
• C15 Bacteria from Cheese
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Set Includes: C1 Bacteria (3 types) Smear C2 Saccharomyces Smear C3 Chlamydomonas (w.m.) C4 Penicillium (w.m.) C5 Volvox (w.m.) C6 Spirogyra (w.m.) C7 Aspergillus (w.m.) C8 Euglena C9 Paramecium C10 Amoeba (w.m.) C11 Agaricus Section C12 Actinomyces C13 Hydra Budding (w.m.) C14 Chlorella (w.m.) C15 Bacteria from Cheese.
Note:
(l.s.) longitudinal section
(t.s) transverse section
(w.m) whole mount
(sec) special section
(c.s) cross section
Set Includes:
• E1 Hair Follicle - Human
• E2 Skeletal Muscle (t.s./l.s.)
• E3 Kidney (l.s.)
• E4 Taste Bud (t.s.)
• E5 Earthworm (t.s.)
• E6 Artery and Vein (t.s.)
• E7 Sperm - Human Smear
• E8 Lung Section
• E9 Gill - Fresh Water Fish (t.s.)
• E10 Frog Skin Pigment Cell
• E11 Frog Egg Early Cleavage (sec)
• E12 Lymph Node (sec)
• E13 Ovary from Mammal (sec)
• E14 Nerve Cell
• E15 Simple Squamous Epithelium (sec)
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Set Includes: E1 Human Hair Follicle E2 Skeletal Muscle (t.s./l.s.) E3 Kidney (l.s.) E4 Taste Bud (t.s.) E5 Earthworm (t.s.) E6 Artery and Vein (t.s.) E7 Human Sperm Smear E8 Lung Section E9 Gill - Fresh Water Fish (t.s.) E10 Frog Skin Pigment Cell E11 Frog Egg Early Cleavage (sec) E12 Lymph Node (sec) E13 Mammalian Ovary (sec) E14 Nerve Cell (w.m.) E15 Simple Squamous Epithelium.
Note:
(l.s.) longitudinal section
(t.s) transverse section
(w.m) whole mount
(sec) special section
Set Includes:
• D1 Onion Root Tip Mitosis (l.s.)
• D2 Lichens Foliose Body (sec)
• D3 Fumaria Whole (w.m.)
• D4 Fern Leaf (w.m.)
• D5 Pinus Xylem Stem (t.s.)
• D6 Pinus Young Male Cone (l.s.)
• D7 Pinus Young Female Cone (l.s.)
• D8 Pumpkin Stem (l.s.)
• D9 Pumpkin Stem (t.s.)
• D10 Zee Mays Root (t.s.)
• D11 Zee Mays Root (l.s.)
• D12 Triticum Aestivum Leaf Epidermis (w.m.)
• D13 Lilium Browni Ovary (t.s.)
• D14 Pollen Tube Budding (w.m.)
• D15 Zee Mays Seed (l.s.)
Introduce the world of microscopy to your students through the selection of this prepared slide set. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Set Includes: D1 Onion Root Tip Mitosis (l.s.) D2 Foliose Lichen's Body (sec) D3 Fumaria (w.m.) D4 Fern Leaf (w.m.) D5 Pinus Xylem Stem (t.s.) D6 Pinus Young Male Cone (l.s.) D7 Pinus Young Female Cone (l.s.) D8 Pumpkin Stem (l.s.) D9 Pumpkin Stem (t.s.) D10 Zea Mays Root (t.s.) D11 Zea Mays Root (l.s.) D12 Triticum Aestivum Leaf Epidermis (w.m.) D13 Lilium Brownii Ovary (t.s.) D14 Pollen Tube Budding (w.m.) D15 Zea Mays Seed.
Note:
(l.s.) longitudinal section
(t.s) transverse section
(w.m) whole mount
(sec) special section
(c.s) cross section
Set Includes:
• B1 Conjugation of Spirogyra
• B2 Lichen (w.m.)
• B3 Moss Cluster (w.m.)
• B4 Spinal Cord (t.s.)
• B5 Wheat Seed (l.s.)
• B6 Pinus Pollen (w.m.)
• B7 Stem of Dicotyledon (t.s.)
• B8 Stem of Monocotyledon (t.s.)
• B9 Triticum Aestivum Leaf Eiders (w.m.)
• B10 Terminal Bud (l.s.)
• B11 Single Cell Zoo (w.m.)
• B12 Animal Cell Mitosis
• B13 Cardiac Muscle (sec)
• B14 Blood Smear
• B15 Kidney (l.s.)
Introduce the world of microscopy to your students through the selection of this prepared slide set which features numerous intriguing specimens to study and get them interested in biology. High-quality, yet affordable, 1"x 3"slides labeled and stored in a slotted plastic container. Set of 15 prepared slides. Set Includes: B1 Conjugation of Spirogyra B2 Lichen (w.m.) B3 Moss Cluster (w.m.) B4 Spinal Cord (t.s.) B5 Wheat Seed (l.s.) B6 Pinus Pollen (w.m.) B7 Stem of Dicotyledon (t.s.) B8 Stem of Monocotyledon (t.s.) B9 Triticum Aestivum Leaf Epidermis (w.m.) B10 Terminal Bud (l.s.) B11 Single Cell Zoo (w.m.) B12 Animal Cell Mitosis B13 Cardiac Muscle (sec) B14 Blood Smear B15 Kidney.
Digestive System Connective Tissue Human Blood (sm) Nerve Tissue Hemopoetic System Vascular System Human Cheek Cells Epithelial Tissue Muscle Tissue Endocrine System Respiratory System Excretory System Human Hair Fingerprints Human Skin Blood Smear or Blood Stain Textile Fibers
Digestive System Connective Tissue Human Blood (sm) Nerve Tissue Hemopoetic System Vascular System Human Cheek Cells Epithelial Tissue Muscle Tissue Endocrine System Respiratory System Excretory System Human Hair Fingerprints Human Skin Blood Smear or Blood Stain Textile Fibers
Graduated Interval: 25ml These bottles are made of translucent and unbreakable low density polyethylene. The distinguishing feature that these bottles contain is the built-in delivery tube making it a one-piece wash bottle. These bottles are graduated on the outer surface to reflect an approximate volume of solution filled or dispensed.