AMETEK 300-2070 Cadmium Hollow Cathode Lamp (AAS Cd)

Overview

The AMETEK 300-2070 is a cadmium hollow cathode lamp built as the light source for atomic absorption spectroscopy (AAS) instruments measuring cadmium concentration in a sample. As a consumable, application-specific component, it supplies the precise 228.8 nm wavelength light that cadmium atoms in a flame or graphite furnace absorb, which AAS instruments use to determine cadmium concentration in the sample being analyzed. Without a stable, element-specific source of this kind, an atomic absorption measurement is not possible, which is why the lamp is one of the most important consumables in any AAS laboratory.

As a genuine AMETEK-manufactured single-element lamp, the AMETEK 300-2070 is built to the precise optical and electrical tolerances AAS instrument manufacturers specify for reliable, repeatable analytical results. Seven Star LLC supplies the AMETEK 300-2070 cadmium hollow cathode lamp to environmental, water-quality, food-testing and industrial laboratories across Muscat, Sohar, Salalah and the wider GCC, and can supply it together with other element lamps and AAS consumables in a single order.

Operating Principle

Inside the lamp, a cadmium cathode is bombarded with ions from a low-pressure neon fill gas under an applied current, causing cadmium atoms to be sputtered from the cathode surface and excited to emit light at cadmium’s characteristic 228.8 nm wavelength. This narrow, element-specific emission line is what an AAS instrument’s optical path passes through the sample; cadmium atoms present in the sample absorb a portion of this light in direct proportion to their concentration, letting the instrument calculate a precise cadmium reading.

The strength of the hollow cathode approach is selectivity. Because the lamp emits the exact spectral lines of cadmium, and the atomized sample absorbs only at those lines, other elements in the sample have little effect on the measurement. The 228.8 nm line lies in the ultraviolet part of the spectrum, which is why the lamp window material matters. In practice, the lamp is switched on and allowed to warm up before measurement so that its output stabilizes, and the instrument’s lamp current setting is chosen to balance signal intensity against lamp life.

Engineering Design of the AMETEK 300-2070

The AMETEK 300-2070 uses a quartz window, chosen for its transparency to the 228.8 nm emission wavelength that cadmium analysis requires, and is filled with neon gas to sustain the sputtering discharge that excites the cadmium cathode. It uses a 2-pin uncoded connector configuration and a standard 1.5-inch (37 mm) lamp diameter, matching the socket and optical mounting geometry of AAS instruments designed for this lamp format.

Because the connector is uncoded, the instrument does not read the lamp identity automatically; the analyst selects the element and lamp current in the instrument software. Hollow cathode lamps are consumables whose output gradually decreases as the cathode material is sputtered and the fill gas is consumed. Good practice is to handle the lamp by its body rather than the window, keep the quartz window clean and free of fingerprints, and store spare lamps in their original packaging so that they are ready for immediate use.

Key Features

The AMETEK 300-2070 offers the features laboratories expect from a quality single-element cadmium source:

• It is a genuine AMETEK single-element cadmium hollow cathode lamp for atomic absorption spectroscopy.
• It emits the cadmium-specific 228.8 nm line used for cadmium determination.
• A quartz window provides the ultraviolet transparency required at 228.8 nm.
• A neon fill gas sustains a stable sputtering discharge at the cadmium cathode.
• The 2-pin uncoded connector and 1.5-inch (37 mm) diameter match instruments designed for this lamp format.
• Precision manufacture supports consistent, repeatable AAS analytical results.
• It serves as a direct replacement wherever the AMETEK 300-2070 is specified.
• Single-element design delivers strong, well-defined emission for sensitive trace cadmium measurement.

Industrial Applications

The AMETEK 300-2070 cadmium hollow cathode lamp is used in environmental testing laboratories, water-quality monitoring facilities and industrial quality-control labs across Muscat, Sohar and Salalah that run atomic absorption spectroscopy for heavy-metal analysis, particularly cadmium contamination testing in drinking water, wastewater, soil and industrial effluent samples. Cadmium is a toxic heavy metal that is regulated at low concentrations, so laboratories need a reliable lamp to meet their detection limits.

Across the GCC’s environmental and industrial testing sectors, reliable cadmium hollow cathode lamps like the AMETEK 300-2070 are a routine consumable replacement item, since lamp output gradually degrades with use and must be replaced to maintain analytical accuracy and pass laboratory quality-control checks for regulated heavy-metal testing programs. Seven Star LLC supports municipal water utilities, desalination plants, oil and gas laboratories, mining and metals operations and third-party testing laboratories throughout Oman and the GCC with genuine replacement lamps, helping them keep a spare on the shelf and avoid analytical downtime.

Laboratories can extend the useful life of the AMETEK 300-2070 by operating it at or below the recommended current, switching it off when it is not in use, and tracking its hours of operation in the instrument log. Signs that the lamp is approaching the end of its life include increasing baseline noise, falling emission intensity that cannot be recovered by adjusting the current, and difficulty meeting calibration or detection-limit criteria. Planning replacements before these symptoms affect results protects the validity of cadmium test reports.

Technical Specifications

The AMETEK 300-2070 is supplied to the following specification:

Request a Quote for AMETEK 300-2070

To order the AMETEK 300-2070 cadmium hollow cathode lamp, send Seven Star LLC a formal RFQ with the quantity required and your AAS instrument make and model so that we can confirm fit. Our instrumentation division will confirm current availability, provide the lamp documentation and quote lead times for delivery anywhere in Oman and the GCC. Contact us for pricing and availability on this and other AAS consumables.

Browse the full AMETEK range or see more Liquid Analytical Accessories products supplied by Seven Star LLC in Oman and the GCC.