The Role of the Roller Mixer in ICP Sample Processing

The roller mixer plays a crucial role in the sample pretreatment of ICP analysis, achieving sample homogenization in a gentle, efficient, and pollution-free manner, providing a stable and reliable sample foundation for the trace and ultra-trace element analysis of ICP/ICP-MS, and significantly improving data accuracy and repeatability.
1. Core Function and Advantages
1. Gentle mixing, protecting sample integrity
No impact, no bubbles, no splashing: Using low speed (typically 40–100 rpm) 360° rolling, it does not generate vortices or bubbles, avoiding sample splashing, volatilization (such as Hg, As, Se) and cross-contamination.
Does not damage sample structure: Suitable for post-dissolution calibration solutions, easily sedimentary suspensions, extraction samples (soil, food), and biological samples, without breaking particles, emulsifying, or causing protein denaturation.
2. Eliminates external contamination, suitable for ultra-trace analysis
Non-contact mixing: No contact components such as stirring rods or paddles, no wear, no dissolution, no introduction of metal ions, meeting the strict cleanliness requirements of ICP/ICP-MS ultra-trace detection.
Reduces tube wall adsorption: Continuous rolling can reduce the adsorption of elements on the container wall, improving recovery rate.
3. Ensures uniform stability, enhances data reliability
Prevents sedimentation and adhesion: Continuously slow rolling of the sample after digestion and calibration ensures that particles do not settle, concentration does not stratify, and sampling has true representativeness.
Reduces RSD and improves repeatability: The sample concentration is always uniform and stable, significantly reducing the relative standard deviation of the test, and improving the accuracy and reproducibility of the results.
4. Batch processing, compatible with laboratory processes
Multi-station, multi-container compatibility: Can simultaneously process multiple digestion tubes, centrifuge tubes, volumetric flasks, etc., meeting the synchronous mixing requirements for large batches of samples.
Long-term stable operation: Can operate continuously (some models can reach 200 hours), supports unmanned operation, and is compatible with long-term processes such as extraction, constant temperature extraction, and standard solution mixing.
Can be used in constant temperature: Can be placed in a constant temperature box to achieve constant temperature mixing, meeting specific extraction/reaction requirements.