Spectronic 20

Lab Equipment > Analytical Instruments > Spectrophotometer (UV-Vis, Fluor)

Spectronic 20

The Spectronic 20 is one of the most commonly used spectrophotometers in the lab. Originally manufactured by Bausch and Lomb in 1954, it was later purchased by Milton Roy, and is now owned by Thermo Scientific who produces a new version which is for sale today. The price for purchasing a used Spec 20 can range greatly; with very old Bausch and Lomb Spectronic 20’s selling for $30-$50 to as high as $200 depending on the condition. Newer Milton Roy or Thermo Spectronic 20+ spectrophotometers will fetch better dollars and can range from a few hundred dollars to the low $2000 range.

Spectronic 20 listings on LabX

For Sale Listings  Spectronic 200 VIS Spectrometer
For Sale
Thermo Fisher Scientific Spectronic 200
  • Make: Thermo Fisher Scientific
  • Model: Spectronic 200
  • Price: $800.00
Spectronic 200 VIS spectrometer. System has been tested with calibrated standards and accepts both round ("test tube") and square cuvettes.     ...
Ad Number: 493169
For Sale Listings  Bausch & Lomb Spectronic 20 | 5775
For Sale
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  • Price: Contact Seller
The Bausch & Lomb Spectronic 20 is simple in design, requiring manual setting of the wavelength and making readings from a moving-needle analog display, the unit is rugged, accurate, and...
Ad Number: LV29194761
For Sale Listings  Bausch & Lomb Spectronic 20 | 2392
For Sale
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  • Price: Contact Seller
The Bausch & Lomb Spectronic 20 is simple in design, requiring manual setting of the wavelength and making readings from a moving-needle analog display, the unit is rugged, accurate, and...
Ad Number: LV29194760
For Sale Listings  Milton Roy Spectronic 20
For Sale
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Milton Roy Spectronic 20 Milton Roy Spectronic 20
Ad Number: LV28861931
For Sale Listings  Milton Roy Spectronic 20
For Sale
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  • Price: 600
We have three kinds of tubes, select choice of 340-600nm, 400-700nm (most common range), and 600-950nm.
Ad Number: LV29230469
For Sale Listings  Bausch and Lomb Spectronic 20 33-29-95 As is for Repair or Parts
For Sale
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  • Price: $299.00
Bausch and Lomb Spectronic 20 33-29-95 As is for Repair orPartsUsed from working lab. Tested unit. Powers onintermittentlyCatalog Number: 33-29-95Serial Number: CD-0994120 Volt 60 Hz 0.3 Amp...
Ad Number: LV28903867
For Sale Listings  New bulb for spectronic 20
For Sale
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  • Price: $16.75Free shipping
This listing is for a brand new bulb for spectronic 20 spectrophotometers. I use these bulbs in my own spec 20's so I know firsthand that they work perfectly. If not satisfied for ANY reason...
Ad Number: LV29210644
For Sale Listings  20 NEW pyrex glass test tubes, cuvettes, for spectronic 20, 20D, 20D+
For Sale
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  • Price: $14.35
This listing is for 20 NEW test tubes that fit the standard Spectronic 20 and similar models perfectly. These do NOT fit the spectronic 21. Made of Pyrex (borosilicate) glass. These do not f...
Ad Number: LV29210396

See all listings for Spectronic 20

Bausch & Lomb 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.

ADDITIONAL INFORMATION.

Milton Roy Spectronic 20D+

  • Direct computer and printer interfacing
  • Easy-to-read digital display
  • Concentration mode

Same basic features as Spectronic® 20+ except 0%T adjustment has been eliminated. LED display displays readings in 0-100%T, 0-1.95A and 0-1999C (with a factor value of 0.1-1000). Concentration mode eliminates need to construct standard curves for each analysis. Simply set concentration with a standard or input the factor and read the concentration of the unknown sample on the display. Built-in print control. A single cable connects the unit to a

Thermo Scientific SPECTRONIC 20+ and 20D+

The SPECTRONIC 20 name has become synonymous with longevity, reliability, and quality. It remains a key tool in the classroom for teaching future chemists and a proven ‘workhorse’ instrument for the quantitative analysis of wastewater, foods and beverages, and more.
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