Physicists and chemists rely on hollow cathode lamps (HCL) for atomic absorption and other applications. At diaago, we have an assortment of hollow cathode lamps for sale with cathodes of various elements available that fit a number of different atomic absorption spectroscopy (AAS) instruments. The lamps that we have available are produced by Green Scientific, an Australian company that has become renowned for their high-quality AAS and ICP products.
If you are unsure which HCL would be best suited for your application, we invite you to reach out to us for assistance.
While there are variations between different models of hollow cathode lamps, they all share the same basic structure:
Cathode: The cathode contains the element of interest
Anode: The anode contains the required potential for striking the discharge.
Gas Fill: An inert, noble gas is used for the filler gas, typically neon or argon.
Glass Tube: The glass envelope, made from either quartz or borosilicate, allows you to view spectral lines of interest
A high-quality hollow cathode lamp will generate a spectral emission line from the element with enough purity and intensity to create a linear calibration graph with minimal noise.
Depending on your application and instrument, there are hollow cathode lamps available with the following different options:
Diameter: 37 mm/1.5”, 2”
Coded or uncoded
Single element or multi-element
Connector: 2 pin, 4 pin, 7 pin
In order to make sure that you get the most out of your hollow cathode lamp, you want to ensure that you are following best practices for their use. Green Scientific has a data sheet for their products to prolong the life of your lamp. The sheet lists their products along with some of the most common models of AAS equipment so that you can use your lamp at the optimal current for your instrument.
They recommend starting on a lower run current and increasing it by one mA at a time until the peak energy is found. It is important to note that running the lamp on a lower current will help to extend its lifespan.
At diaago, we strive to make it as simple as possible for you to find all of the materials and equipment that you need for your lab, whether your area of study is physics, chemistry, or any other discipline. Besides hollow cathode tubes, you’ll find sample storage products, storage racks, and more. Our team understands how precious your time is as a scientist, which is why we will work with you to understand your needs and help you find the best solutions for your application. If you have any questions about the products that we offer, or if you’d like to request additional information, we are more than happy to assist you. Contact us today via our website or give us a call.