SPECTRONIC 20+ Analog Spectrophotometer 340-950nm Lab Laboratory Tested Power for Sale

Recent Threads

On eBay Now...

SPECTRONIC 20+ Analog Spectrophotometer 340-950nm Lab Laboratory Tested Power For Sale

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

SPECTRONIC 20+ Analog Spectrophotometer 340-950nm Lab Laboratory Tested Power:
$179.99

Professional Description

Pre-owned SPECTRONIC 20+ analog laboratory spectrophotometer designed for visible/near-IR absorbance and transmittance measurements.

This classic single-beam laboratory instrument provides a wavelength range of 340 to 950 nm. The analog meter provides direct readings for percent transmittance (%T) and absorbance. The manufacturer's operating documentation confirms the SPECTRONIC 20+ uses separate filter settings for 340–599 nm and 600–950 nm, exactly matching the controls visible on this unit.

Testing Performed

The unit has been power-on tested. The indicator light illuminates and the analog meter is active as shown in the actual photos.

However, no laboratory sample testing, wavelength verification or calibration has been performed. Accuracy across the wavelength range has not been verified.

For that reason, this unit is being sold as:

PRE-OWNED — POWER-ON TESTED — FULL FUNCTIONALITY/CALIBRATION UNTESTED

The manufacturer's procedure calls for a warm-up period followed by wavelength selection, correct filter selection, zero adjustment and 100%T adjustment before measurements are taken.

Cosmetic Condition

The instrument shows normal-to-moderate cosmetic wear consistent with an older laboratory instrument, including:

Paint chips along several edges
Surface scratches/scuffs
General handling/storage marks
Wear around controls and housing

The meter window, adjustment knobs and sample compartment cover appear present. Please review all photographs carefully for the exact condition.

Specifications

Model: SPECTRONIC 20+
Type: Single-Beam Analog Spectrophotometer
Wavelength Range: 340–950 nm
Nominal Spectral Slit Width: 20 nm
Readouts: % Transmittance / Absorbance
Filter Range 1: 340–599 nm
Filter Range 2: 600–950 nm

Package Includes

1× SPECTRONIC 20+ Spectrophotometer
1× Attached power cord

No cuvettes/test tubes, calibration standards, manual or additional accessories included unless shown.