Bausch & Lomb Spectronic 20


Spectronic 20

The Spectronic 20 was introduced by Bausch & Lomb in 1954. This single beam spectrophotometer is well known for its enduring design and reliability. It can be used to determine what is in a solution by taking a spectrum (the pattern of how much light is absorbed at each particular wavelength vs. wavelength). More commonly it is used to determine the concentration of substances in solution by comparing the amount of light absorbed at a particular wavelength as compared to a standard of known concentration.   
Spectronic 20
Optics Single Beam
Wavelength Range 340 to 600 nm
Additional Specifications Mirrored Scale: 5 1/2 in   
Rapid Warmup: 5 min


Built in Fan: Cools Sample Compartment, Assures Stable Readings


Manuals and Resources

Note: We appreciate the support of individuals and companies making their documents and resources available to our community. If you find a document or resource that does not belong please let us know by emailing

Instrument Documents

Picture of Bausch & Lomb Spectronic 20
Bausch & Lomb was founded in 1853. With respect to laboratory equipment, Bausch & Lomb's specialty is spectrophotometers.    Bausch...

More about Bausch & Lomb

Visit Bausch & Lomb

Questions and Answers

Recent Question Activity

Ask a Question

Cuvette wont fit through metal clip

The cuvettes we ordered to come with our spectrophotometer are 2 inches tall and the square shape won't fit through the metal spring with side arms.  A test tube is too fat to fit either.  Should we remove the clip?

Right knob setting

Hello!  I am experiencing an issue as i am unable to the right know to 100. Previously worked just fine. Any ideas as to why? Is there another issue?   Thanks!


Hello, I recently found a Bausch & Lomb spectrophotometer, but I am missing the cuvettes.  Can I order some?  Do you need the model number?  Its a Spectronic 20 Inspected by #508

See all 22 Bausch & Lomb Spectronic 20 Questions and Answers There are 22 Threads


Member Reviews

There are no threads in Bausch & Lomb Spectronic 20 Reviews at this time.
Add a Review