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NEW E-Torch™

Ultimate Plasma Stability. Years of Torch Life.

Now available for Thermo Scientific® PRO Series

For over 30 years, Glass Expansion has led the ICP industry in demountable torch design and pioneered ceramic torches to deliver robust plasma performance and simplified maintenance. The E-Torch™ extends that legacy to Thermo PRO DUO and Radial ICP-OES, engineered with precision annular spacing and advanced materials to deliver stability and versatility across the widest range of sample types.

Why Labs Choose the E-Torch

Traditional quartz torches and open-loop designs struggle with high-TDS samples, organics, fusion digests, and wear-metal oils. This is due to plasma instability, rapid tube degradation, and frequent maintenance, which drives up cost and downtime.

The E-Torch was engineered to solve these problems directly: tighter control of annular spacing for stable dual-view performance, a hotter and more robust plasma when the ceramic plasma tube is used, and true injector interchangeability so one torch body can be optimized for virtually any sample type.

Key Features & Benefits

  • 30+ Years of Demountable Torch Innovation: Proven demountable torch technology, built on over three decades of innovation, it delivers ease of use, robustness, flexibility, and reliability that have made Glass Expansion’s demountable torches the preferred choice for routine and challenging sample matrices.
  • Hotter Plasma. Longer Life: The all-ceramic plasma tube generates a hotter, more robust plasma, reducing matrix effects while delivering measurable improvements in sensitivity. In aggressive sample matrices, ceramic plasma tubes can provide years of service, compared with the shorter time frames often achieved by conventional quartz torches.
  • Maximum Plasma Stability: Precision-controlled annular spacing, plus a newly optimized viewing window for the DUO that replaces the traditional open loop, improves analytical stability while extending torch life.
  • Higher Aerosol Transport Efficiency: Advanced tapered injector geometry promotes laminar gas flow around the tip, improving transport efficiency, short-term precision, sensitivity, and overall analytical performance.
  • Simplified Maintenance: User-friendly retainers ensure precise alignment between the injector and plasma tube and enable quick, repeatable assembly, reducing service time.
  • One Torch for Every Application: Fully interchangeable Quartz, Alumina, and Sapphire injectors, available in multiple internal diameters, provide exceptional flexibility for aqueous, organic, high-TDS, fusion, and wear-metal analyses.

Ceramic Plasma Tube: Years, Not Days

As the pioneer of ceramic torches, Glass Expansion introduces the all-new ceramic plasma tube. Ceramic torches produce a hotter, more robust plasma that reduces matrix effects and improves detection limits. Lifetime matters just as much: compared with quartz, the ceramic plasma tube lasts dramatically longer, cutting maintenance, cleaning, and downtime from torch failure. In some matrices, quartz tubes degrade within hours, in comparison ceramic tubes may last years under the same conditions. The Plasma Tube (ceramic or quartz) can also be placed in a drying oven or muffle furnace to easily bake-off carbon buildup.

Ideal For:
  • High-TDS samples that quickly devitrify quartz tubes.
  • Analyses at the detection limit, as the hotter plasma condition increases sensitivity.
  • Monitoring wear metals in engine oils, where quartz tubes crack under thermal shock.
  • Fusion sample analysis, where lithium salts rapidly attack quartz.

Comparison of Quartz Plasma Tube to Ceramic Plasma Tube

Element % Increase in Sensitivity % RSD
Zn (213) λ 17% 0.37
Ni (231) λ 19% 0.57
Mn (257) λ 14% 0.52
Ceramic Plasma Tube for Thermo Scientific® PRO DUO - P/N 31-808-4502
Ceramic Plasma Tube for Thermo Scientific® PRO Radial - P/N 31-808-5165

Precision Annular Spacing & Optimized Viewing Window

Traditional quartz torch manufacturing methods are limited in terms of tolerance for the annular spacing between the outer and intermediate tubes. This annular spacing affects gas flow rates and, in turn, the stability of the plasma and lifetime of the torch, which can be further compromised when analyzing complex matrices. Therefore, it is important to maintain a precise annular spacing to achieve optimal and reproducible results and maximize the operational life of the torch. Glass Expansion’s proprietary manufacturing capabilities enable superior control of annular spacing, as well as an optimized viewing window for dual-view instruments. The combination of these manufacturing features in the new Thermo PRO E-Torch Plasma Tubes, both quartz and ceramic, helps analysts ensure the greatest plasma stability even in complex matrices. Maximum stability delivers the best precision and lowest detection limits.

E-Torch Optimized DUO Viewing Window
Traditional Open Loop Viewing Window

Tapered Injector Technology

Glass Expansion's advanced tapered injector geometry promotes laminar gas flow around the tip, improving aerosol transport efficiency, short-term analytical precision, and sensitivity compared with traditional designs.

Tapered Bore Injectors
More efficient aerosol transport and improved sensitivity.
Capillary Bore Injectors
Straight bore ID, typically 0.5–2.5 mm.

Injector Selection Guide

Glass Expansion uses raw materials of the highest purity, helping improve detection limits by keeping background contamination as low as possible. Use the tables below to find the right diameter and material for your matrix.

Choose by Sample Matrix

Bore Size ID Range Best For
Narrow Bore ~0.8–1.0 mm Volatile organic solvents (ketones, alcohols, aldehydes), smaller ID reduces plasma solvent load to stabilize it
Standard Bore ~1.5–2.0 mm (down to 1.2 mm) Routine aqueous matrices; also suitable for semi-volatile analyses
Large Bore ~2.0–3.0 mm High-TDS matrices, large bore prevents blockages from salt deposit build-up near the tip

Choose by Injector Material

Material Best For Watch Out For
Quartz Routine aqueous and volatile organic analyses. Most cost-effective Not compatible with HF at any concentration; shorter lifetime; tip can chip easily
Alumina (Ceramic) High temperatures, high TDS, acid resistance, including HF, mineral acids, and aqua regia; also less-volatile organics like xylene Higher cost than quartz
Sapphire Low-background applications involving silicon, boron, and HF Premium cost; reserved for high-purity work

Tip: If you experience salt buildup on your injector tip, pair your E-Torch with our Elegra Argon Humidifier. Learn more about the Elegra Argon Humidifier →

E-Torch for Thermo Scientific® PRO DUO

E-Torch Diagram

E-Torch for Thermo Scientific® PRO Radial

E-Torch Diagram

Ordering Information

E-Torch

Part Number Description
30-808-4388 E-Torch for Thermo Scientific® PRO DUO
30-808-5163 E-Torch for Thermo Scientific® PRO Radial

E-Torch Options

Part Number Description
31-808-4425 E-Torch Body
31-808-4498 Plasma Tube Retainer 22mm
31-808-4582 S13 Injector Retainer 6.5mm
70-V-011 Viton O-rings for FDT/SDT S13 ball joints (PKT 10)
31-808-2836 Capillary Quartz Injector 2.0mm (EMT)
31-808-4381 FKM O-Rings (PKT 10)
70-803-6475 Silicone O-rings 22X1.8S70 (PKT 10)

Plasma Tubes

Part Number Description
31-808-4390 Quartz Plasma Tube for Thermo Scientific® PRO DUO
31-808-4502 Ceramic Plasma Tube for Thermo Scientific® PRO DUO
31-808-5164 Quartz Plasma Tube for Thermo Scientific® PRO Radial
31-808-5165 Ceramic Plasma Tube for Thermo Scientific® PRO Radial

Tapered Injectors

Part Number Description
31-808-3511 Quartz Injector 0.75mm
31-808-2833 Quartz Injector 1.0mm
31-808-2834 Quartz Injector 1.5mm

Capillary Injectors

Part Number Description
31-808-3510 Quartz Injector 1.0mm
31-808-2836 Quartz Injector 2.0mm
31-808-3246 Quartz Injector 2.5mm
31-808-3247 Quartz Injector 3.0mm
31-808-3279 Alumina Injector 1.0mm
31-808-2835 Alumina Injector 2.0mm
31-808-2977 Sapphire Injector 2.0mm

Not sure which E-Torch configuration you need, have a question about consumables and replacements, or seeking guidance on installation and maintenance? Reach out to a Glass Expansion Application Specialist for assistance and pricing. Contact Glass Expansion →

See It in Action

Swapping injectors shouldn't slow down your workflow. These short guides walk you through E-Torch assembly and maintenance step by step, so you can get back to running samples faster.

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