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Learn the history of the discovery of DNA and DNA structure, the nature of genetic inheritance, and the tole of DNA and proteins in genetic expression.

Have you ever wondered how Copper is Formed in Nature?

Wards® Visible Spectrophotometers are perfect for your classroom or laboratory. The easy-to-use 1208 and 1204 are ideal for any standard application, while staying within a conservative budget. They have a high quality silicon photodiode detector and 1200 lines/mm diffraction grating that assures high performance, as well as a large digital display and built-in, automatic filters for easy operation. These spectrophotometers feature Absorbance, Transmittance, Factor and Concentration modes, as well as automatic zeroing and blanking with the touch of a single button. The 1208 and 1204 visible spectrophotometers feature both USB and RS-232C ports for data transfer and you can select optional Windows® based software for easy data collection and application expansion to standard curve and kinetics, Abs. and %T. Data can be easily exported to Microsoft Excel® for further processing, analysis and storage. Software can be used with Windows® 2000, ME, and XP. Bulb changes are quick and easy when needed and require no tools, or alignment. The large sample compartment can accept cuvettes up to 50 mm path length and can accept a variety of optional accessories.

The 1100RS Visible Spectrophotometer features an accurate 10nm bandpass model and is designed for use with ¹/₂" (13 mm) round tubes or 10mm square cuvettes and is perfect for most laboratory/classroom applications. An adapter is supplied at no additional charge for 10 mm square optical glass cuvettes. The high quality silicon photodiode detector and 1200 lines/mm grating assures high performance. Auto zero function, one-touch blanking and built-in, automatic filters allow for easy operation. The large digital display allows for quick and easy readings. This visible spectrophotometer works with optional Windows® based software for easy data collection and application expansion to Standard Curve and Kinetics, Abs. and %T and Concentration, etc. Data can be easily exported to Microsoft Excel® for further processing and analysis. The software is designed for Windows based PCs using Windows® 2000, ME, or XP. A USB and RS-232 port is available on this spectrophotometer as well as Absorbance, Transmittance, Concentration (C) and Factor (F) modes. Each mode can be quickly selected with the touch of a button.

Designed for classroom use, these lightweight hoods feature an epoxy-coated aluminum frame with tempered safety glass front sash, sides, rear baffle, and top.

HOBO research-grade cellular HOBO weather station kits offer accurate, reliable performance - even in the harshest outdoor climates.

Study Eleven Celestial Objects with Light–up Sun

This device shows how the sun's appearance changes over a period of one month.

Perfect for studying a wide variety of concepts.

Simulates Seasons, Phases of the Moon and More

Middle and High School STEM.

Make photographic prints using the sun.

The HOBO® Rain Gauge system is battery powered and includes a HOBO® Pendant Event data logger with a tipping-bucket rain gauge.

The Go Direct Energy sensor quantifies the voltage, current, power, and energy output.

The Vernier Flash photolysis spectrometer is a simple, user-friendly device for demonstrating the fundamental principles of chemical kinetics and photochemistry to undergraduate chemistry students.

Demonstrate the conversion energy into different forms.