United Scientific Supplies

Made from Plate Glass, with carefully ground and polished optical survaces, and cleanly ground edges, these lenses feature a diameter of 38mm - 125mm and focal lengths from 50mm - 500mm.

A set of six glass spherical mirrors with back survace silvering. Includes three convex and three concave mirrors, all of 50mm diameter. Focal lengths are: 50mm, 100mm, 200mm, -50mm, -100mm, -200mm.

Streak, unglazed, for use by mineralogists. Thermal Shock Resistance - average coefficient of expansion from 20° C to 200° C is 3.56 x 10-5, gradually increasing to 4.69 x 10-5 at 1050°C. Every batch of porcelain is heat tested in our factory. Glaze - No softening occurs up to...

The kit contains a variety of custom made and unique components, including Force Board, Inclined Plane, and Vector Board. Also included is a complete set of accessories needed for 15 different activities, including an 11 piece weight set, spring scales, pulleys, levers, support base and rod, and...

Hooded lighter is safe and economical. The hood traps gas and protects the lighting file. Replacement flints are also available.

A convenient starter set, includes our popular DSET14 instruments Set and one DPS001 Dissecting Tray. The tray includes a layer of white wax and measures 11.5" x 7.5" x 2".

Use this simple apparatus to measure relative humidity. Includes two plastic-backed Celsius thermometers, one for dry bulb measurements and the other for wet bulb measurements. The thermometers mount on a wooden handle so they can be spun to obtain tem

Graham condenser is designed for use in distillation applications. Constructed of borosilicate glass, this condenser has a coiled inner tube to provide additional surface area for highly efficient cooling. Socket is 24/40 with a screw thread connector.

This pre-assembled DC motor is designed for students to learn about electromagnetic forces. The open structure resembles the diagram found in many textbooks. The polarity of the magnets can be reversed to change the direction of rotation. The motor can also be used with a rheostat to observe the...

Tripod magnifier, 10x magnification. Available in Plastic or Brass with Glass lenses.

Spray bottles are made from clear polyethylene terephthalate (PET) and include a white spray nozzle with clear cap to keep nozzle clean and leak-proof. PET is lightweight, chemically resistant and has excellent durability. Available in 8 oz and 16 oz capacity.

This life size human skeleton model features unbreakable plastic bones which were carefully cast to preserve the finest details. The mandible is hinged; the arms, legs and skull are removable; and the calvarium is sectioned to allow for study of the cranial vault. There is natural movement in the...

Set includes two helical springs. The long, narrow spring measures 3/4" x 72", and can be extended to 5 meters. The larger spring measures 3" x 4", and can be extended many times its length without distortion. The long, narrow spring measures 3/4" x 72", and can be...

Made of quality sheet glass with ground edges, each slide is pre cleaned and packaged in boxes of 72 each. Available in standard shape or rounded corners for additional safety.

Inflatable world globe features country capitals, important cities, time zones, international boundaries and geographic features. The globe is 10” tall and 12” wide when inflated.

Featured displays of this electronic alarm stopwatch include time (hours-minutes-seconds, with 12 or 24 hour mode option), calendar, 24-hour stopwatch, alarm, hourly chime, 1/100 second chronograph, split time, and total time. It is lightweight, easy to operate, ad comes complete with battery and...

Overall length 9", rivted joints, tips are serrated. These crucible tongs are designed for safe and efficient handling of hot crucibles in laboratory environments. Made from heat-resistant materials, they provide protection against high temperatures. The tongs' design ensures a secure grip on...

Economical laser pointers are useful for many optical experiments. Lasers operate on a push-button switch, are housed in a rubberized aluminum pen-style case, and include a pocket clip. The 6" long x 0.5" diameter Class 3R Red laser pointer has a maximum output of 5mW and a wavelength of...

This excellent instrument is easy to set up and easy to use and is designed for students to make precise measurements. This unit features high quality 22MM optics, a built-in illuminated auto-collimator for fast set up, a 17.8 cm diameter divided circle with clear gradations, a double-ended vernier...

Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Stopper are green for easy identification. Sold by the...

This kit is ideal for teaching students how to make measurements in the metric system and then apply those measurements to determine density using the formula Density = Mass/Volume. Includes metric ruler, aluminum bar 76 x 25 x 6mm, aluminum cubes 13mm (2), steel sphere 13mm and glass sphere 13mm....

Our pH, Indicators & Dyes kit includes 4 primary activities, each accommodating up to 40 students. This STEM kit contains structured investigations to make inquiry based learning affordable and fun! For pennies per experiment, your students have access to digital PDF content such as Individual...

Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. Analytical Weight Box contains a total of 9 weights from 1 to 100 grams, in polished wooden box, with fractional weights, rider and forceps.

Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. Analytical Weight Box contains a total of 9 weights from 1 to 100 grams, in polished wooden box, with fractional weights, rider and forceps.