The Elegra Argon Humidifier

Uninterrupted and Maintenance-Free ICP Operation

It is standard practice to use dry argon for the nebulizer gas in ICP to generate an aerosol and transport the sample to the plasma. However, with samples containing high amounts of total dissolved solids (TDS) there is an increased likelihood of salt deposits forming at the tip of the nebulizer and injector which can result in significant analytical drift in or even an extinguished plasma. To successfully measure challenging sample matrices with high TDS, it is important to optimize your ICP sample introduction system including a:

  • Suitable, high TDS nebulizer
  • Double-pass, cyclonic spray chamber to filter out large droplets
  • Wide bore injector
  • Humidified argon nebulizer gas supply

Adding an argon humidifier such as the Elegra, will reduce maintenance and the chance of an extinguished plasma owing to a blocked nebulizer or injector.

Design

The elegant design of the Elegra is compact and made of inert, metal-free materials so it is easier to fit into the often crowded, harsh environment of the sample compartment of any ICP.

The novel, highly efficient membrane technology adds moisture to the argon nebulizer gas without the need for pressurization or electrical heating. The Elegra can be configured as either a:

  • Single-channel version with a bypass switch to turn humidification on and off
  • Or dual-channel version for humidifying the nebulizer gas and dilution gases often used in ICP-MS

The Elegra is available in range of configurations with customized gas connectors to exactly suit a your ICP.

Table 1. Elegra Single-Channel Argon Humidifier Kits

To Suit Part Number
Agilent ®/Varian Vista/700-ES/MP-AES 70-803-1265
Agilent ® 5100/5110/5800/5900 70-803-1268
Agilent ® 4500/7500 70-803-1267
Agilent ® 7700/7800/7900/8800/8900 70-803-1268
Horiba ® Jobin Yvon 70-803-1266
Teledyne™ Leeman 70-803-1265
PerkinElmer ® AVIO/Optima 70-803-1269
PerkinElmer ® Elan/NexION 70-803-1270
Shimadzu ® 9000/9800 70-803-1312
Spectro™ 70-803-1269
Thermo ® 6000/7000 ICP 70-803-1268
Other models 70-803-1269

Table 2. Elegra Dual-Channel Argon Humidifier Kits

To Suit Part Number
Agilent ® 4500/7500 70-803-1272
Agilent ® 7700/7800/7900 70-803-1273
PerkinElmer ® Elan/NexION 300 Series 70-803-1274
PerkinElmer ® Nexion 1000/2000 Series 70-803-1473
Thermo ® Q/RQ/TQ 70-803-1473
Other models 70-803-1275

Superior Performance

Some matrices like lithium metaborate fusions are considered to be the most challenging in routine contract laboratories. The high amount of dissolved solids in such matrices often requires re-runs due to drift in signal from the slow build up of salts. In the example below, the use of the Elegra shows virtually no variation in internal standard signal over a period of 4 hours.

Figure 1. Internal Standard Stability in 0.5% Lithium Metaborate

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