HTL Cadmium Hollow Cathode Lamp

is a single-element spectral source for cadmium analysis by atomic absorption spectroscopy (AAS). It provides characteristic emission at 228.8 nm and 326.1 nm in a standard 38 mm (1.50 in.) uncoded 2-pin format.

Applications

Cadmium Analysis by Atomic Absorption Spectroscopy

Designed as an element-specific spectral source for quantitative cadmium determination using the 228.8 nm and 326.1 nm analytical lines.

Laboratory Elemental Analysis

Suitable for laboratory procedures requiring quantitative cadmium measurement by atomic absorption spectroscopy.

Method Development

Supports development and validation of AAS methods requiring a dedicated cadmium hollow cathode spectral source.

Research and Quality Control

Useful for routine elemental testing, research, and quality-control procedures requiring cadmium analysis by AAS.

Features

• Single-element hollow cathode design for cadmium analysis
• Analytical emission lines at 228.8 nm and 326.1 nm
• Recommended operating current of 5 mA
• Standard 38 mm (1.50 in.) lamp format
• Uncoded 2-pin octal base for compatible AAS instruments
• Typical service life of 5,000 mA·h

Specifications

FAQs

How can I tell when the hollow cathode lamp is nearing the end of its useful life?

Reduced analytical-line intensity, unstable output, increased signal noise, unstable lamp current, or failure to produce a usable spectral line can indicate that the lamp is approaching the end of its service life. Instrument settings, lamp alignment, and operating conditions should also be checked before replacing the lamp.

Why does the lamp require warm-up time before analysis?

Hollow cathode lamp output requires time to stabilize after startup. Allowing the lamp to reach stable operating conditions helps minimize baseline drift and supports consistent analytical measurements.

Why might a new hollow cathode lamp have dark areas inside the glass envelope?

Dark deposits can result from normal lamp manufacturing and conditioning processes. Their presence does not necessarily indicate that the lamp has been previously used or that its analytical performance has been affected.

Can operating conditions affect lamp life?

Yes. Operating the lamp at excessive current accelerates cathode sputtering and can shorten its useful life. For normal operation, use the recommended current and do not exceed the specified maximum current.

Why is the recommended operating current relatively low for a cadmium hollow cathode lamp?

Cadmium can exhibit increased self-absorption at higher lamp currents, which may reduce analytical sensitivity. Operating the lamp at the recommended current helps maintain stable spectral output while also supporting practical lamp life.

What safety precautions should be followed when handling the lamp?

Turn the lamp off before installation or removal and allow it to cool before handling. Protect the glass envelope from impact, handle the lamp by its base whenever possible, avoid touching optical surfaces, and operate the lamp only within its specified current limits. Follow all installation and safety procedures provided by the atomic absorption instrument manufacturer.

Warranty

The HTL HCL3-48 Cadmium Hollow Cathode Lamp is warranted against defects in materials and workmanship under normal use and service. Please inspect all protective equipment before each use. For warranty assistance, replacement parts, product support, or application guidance, contact ScienceLighting technical support. Warranty valid for 12 months.

Ordering

Have additional questions? Contact ScienceLighting at (650) 961-9031 or sales@sciencelighting.com.