Thermo Scientific™ Spectrophotometer Test-tube Cuvettes

Thermo Scientific™ Test-Tube Cuvettes are easy-to-use, inexpensive spectrophotometer cells for routine analyses.

Brand: Thermo Scientific™

Manufacturer Part Number: 331780-000


UNSPSC: 41120000

Code: A0

Additional Details:
Additional Details: Weight: 0.80000kg

Product Code. 11883774

Quantity Price
1 £84.16 / Pack of 12
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Description and Specification


Description Standard test-tube cuvette with white marker line for consistent alignment. Outer diameter is approx. 0.5". Inner diameter (pathelength) approx. 11.6mm. Box of 12, unmatched.
Height (Metric) 100mm
Pathlength (Metric) ~11.6mm

Test-tube cuvettes were popular for making measurements in the Thermo Scientific™ SPECTRONIC™ 20 Spectrophotometers popular in teaching and basic analytical laboratories in the last century.  Many well established methods still call for the use of test-tube cuvettes.  

Modern methods (and instruments) generally rely on square cuvettes with a highly reproducible pathlength, optical surfaces that are perfectly perpendicular to the instrument light beam, and have a high degree of reproducibility from cuvette to cuvette, even among low cost disposable cuvettes sold by the hundred.

Spectrophotometers designed for use with cuvettes often have restrictions on the maximum height of the cuvettes that they can accommodate.  This requires that special short test-tubes be purchased if a customer wishes to work with test-tubes in a modern instrument.  

Thermo Fisher Scientific continues to supply specialized test-tube cuvettes to support our customers’ ongoing analytical needs.  However, we strongly recommend that customers establish new methods to use square or rectangular cuvettes, and that older methods requiring test tubes be reviewed and, if possible, updated to use square cuvettes as a more modern, more accurate, and more available alternative.