Aqueous Solutions
Aqueous Solutions▼
HF
-
Yes▼
Spectromoter Type?
- ICP-OES▼
- ICP-MS▼
-
No▼
Limited Volume?
- Yes▼
-
No▼
Primary Goal?
- Highest Sensitivity▼
-
Best
Precision▼
Organic Solutions
Organic Solutions▼
Volatile Solvent?
- Yes▼
-
No▼
Limited Volume?
- Yes▼
- No▼
Helix CT ICP Spray Chamber
Traditionally, ICP-OES and ICP-MS sample introduction systems have relied on o-rings to form a gas-tight seal between the nebulizer and spray chamber. There are several drawbacks with an o-ring seal, such as:
- Potential for contamination due to dead volume around the o-ring seal
- Chemical resistivity of strong acids and organic solvents
- The o-rings are difficult to replace, often requiring tools
- Bonding to the nebulizer can result in breakage
Glass Expansion is now pleased to introduce the Helix CT spray chamber with ConstantTorque™ technology, which provides a constant, reproducible, inert, gas-tight seal between the nebulizer and spray chamber.
PRODUCT FEATURES
Helix CT Features
The main feature of the Helix CT spray chamber is a new Helix locking screw with built-in torque control mechanism that allows for a consistent seal of the PTFE ferrule against the nebulizer –making it impossible to overtighten or undertighten while ensuring a gas-tight seal each and every time. A new PressFit PTFE ferrule provides a chemically inert seal around the nebulizer, which is immune to strong acids and organic solvents routinely used in ICP sample preparation. The new Helix CT cyclonic spray chamber by Glass Expansion, therefore, eliminates all the drawbacks of the o-ring nebulizer seal, while improving user safety by preventing broken nebulizers.
The new Helix CT nebulizer interface is also simple to use:
- Fully insert the nebulizer into the Helix CT interface, until the nebulizer side-arm comes into contact with the molded-in positive stop.
- Hand-tighten the Helix CT locking screw until the ConstantTorque mechanism clicks, indicating a secure, gas-tight seal.
- Glass Expansion will equip all of its glass, PFA, and PTFE spray chambers with the Helix CT interface as standard.
Product Benefits
Helix CT Benefits
ConstantTorque Locking Screw
A new Helix locking screw with CT technology allows for a consistent inert PTFE seal against the nebulizer - making it impossible to overtighten while ensuring a gas-tight seal each and every time. Torque control also improves user safety, preventing broken glassware.
PTFE PressFit Seal
A new PressFit Helix PTFE seal provides a chemically inert seal around the nebulizer. The PTFE ferrule is immune to strong acids and organic solvents routinely used in ICP sample preparation. It, therefore, eliminates all the drawbacks of the O-ring nebulizer seal, including broken nebulizers.
Zero Dead Volume Interface
Compared to other types of nebulizer-spray chamber interfaces, the Helix CT is the only interface that significantly reduces dead volume around the nebulizer. This unique design minimizes washout time with highly concentrated samples, reduces sample-to-sample carry-over and improves sample throughput.
Optimum Depth and Torque
The new Helix CT interface still maintains the original positive stop to ensure that the nebulizer is inserted to the correct and optimum depth within the spray chamber. However, the torque applied to the nebulizer seal is also critical. Consistent nebulizer depth combined with ConstantTorque control provides the ICP analyst with unparalleled, reproducible day-to-day analytical performance.
