Thermo Scientific™

Spectrophotometer Test-tube Cuvettes

Catalog number: 331782000
Thermo Scientific™

Spectrophotometer Test-tube Cuvettes

Catalog number: 331782000
Enhance routine analyses with Thermo Scientific™ Test-Tube Cuvettes- easy-to-use, inexpensive spectrophotometer cells. A dedicated test tube holder accessory is required to make measurements in test-tubes in all Thermo Scientific™ GENESYS™ and Thermo Scientific™ Evolution™ spectrophotometers. Refer to your instrument User Guide for information on limits on the height of test tubes that can be accommodated in the sample compartment of your instrument.
 
Catalog Number
331782000
Unit Size
Each
Description
1-inch tall test tube cuvette with flat bottom. Boz of 12, unmatched.
Path Length
∼22 mm
Height (Metric)
152mm
Price (USD)
Full specifications
TypeCuvette
Description1-inch tall test tube cuvette with flat bottom. Boz of 12, unmatched.
Path Length∼22 mm
Height (Metric)152mm
Unit SizeEach
Catalog Number
Unit Size
Each
Description
Standard test-tube cuvette with white marker line for consistent alignment. Outer diameter is approx. 0.5 in. Inner dia. (pathlength) approx. 11.6mm. Box of 12, unmatched.
Path Length
∼11.6 mm
Height (Metric)
100 mm
Price (USD)
Full specifications
TypeCuvette
DescriptionStandard test-tube cuvette with white marker line for consistent alignment. Outer diameter is approx. 0.5 in. Inner dia. (pathlength) approx. 11.6mm. Box of 12, unmatched.
MaterialOptical Glass
Path Length∼11.6 mm
Height (Metric)100 mm
Unit SizeEach
Catalog Number
Unit Size
Each
Description
¾ inch test-tube cuvette.19mm OD. Box of 12, unmatched.
Path Length
16 mm
Height (Metric)
150mm
Price (USD)
Full specifications
TypeCuvette
Description¾ inch test-tube cuvette.19mm OD. Box of 12, unmatched.
Path Length16 mm
Height (Metric)150mm
Unit SizeEach
Catalog Number
Unit Size
Each
Description
20mm pathlength “shorty” test tube cuvette. Box of 12, unmatched.
Path Length
20 mm
Height (Metric)
88mm
Price (USD)
Full specifications
TypeCuvette
Description20mm pathlength “shorty” test tube cuvette. Box of 12, unmatched.
Path Length20 mm
Height (Metric)88mm
Unit SizeEach
Catalog Number
Unit Size
Each
Description
1-inch short test tube cuvette with flat bottom. Box of 12, unmatched.
Path Length
∼22 mm
Height (Metric)
65mm
Price (USD)
Full specifications
TypeCuvette
Description1-inch short test tube cuvette with flat bottom. Box of 12, unmatched.
Path Length∼22 mm
Height (Metric)65mm
Unit SizeEach
Showing 5 of 5
Catalog NumberSpecificationsUnit SizeDescriptionPath LengthHeight (Metric)Price (USD)
331782000Full specifications
Each1-inch tall test tube cuvette with flat bottom. Boz of 12, unmatched.∼22 mm152mmRequest A Quote
TypeCuvette
Description1-inch tall test tube cuvette with flat bottom. Boz of 12, unmatched.
Path Length∼22 mm
Height (Metric)152mm
Unit SizeEach
331780-000Full specifications
EachStandard test-tube cuvette with white marker line for consistent alignment. Outer diameter is approx. 0.5 in. Inner dia. (pathlength) approx. 11.6mm. Box of 12, unmatched.∼11.6 mm100 mmRequest A Quote
TypeCuvette
DescriptionStandard test-tube cuvette with white marker line for consistent alignment. Outer diameter is approx. 0.5 in. Inner dia. (pathlength) approx. 11.6mm. Box of 12, unmatched.
MaterialOptical Glass
Path Length∼11.6 mm
Height (Metric)100 mm
Unit SizeEach
331781000Full specifications
Each¾ inch test-tube cuvette.19mm OD. Box of 12, unmatched.16 mm150mmRequest A Quote
TypeCuvette
Description¾ inch test-tube cuvette.19mm OD. Box of 12, unmatched.
Path Length16 mm
Height (Metric)150mm
Unit SizeEach
331777000Full specifications
Each20mm pathlength “shorty” test tube cuvette. Box of 12, unmatched.20 mm88mmRequest A Quote
TypeCuvette
Description20mm pathlength “shorty” test tube cuvette. Box of 12, unmatched.
Path Length20 mm
Height (Metric)88mm
Unit SizeEach
331773000Full specifications
Each1-inch short test tube cuvette with flat bottom. Box of 12, unmatched.∼22 mm65mmRequest A Quote
TypeCuvette
Description1-inch short test tube cuvette with flat bottom. Box of 12, unmatched.
Path Length∼22 mm
Height (Metric)65mm
Unit SizeEach
Showing 5 of 5

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.