Model :ZRS Series
The AELAB ZRS-8ST Dissolution Tester provides accurate measurement of dissolving speed and degree for solid preparations, including tablets and capsules. This dual-functional model integrates electric lifting, head overturn capability, and precise water bath temperature control, ensuring reproducible dissolution testing in pharmaceutical quality control environments.
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The AELAB Dissolution Tester ZRS-8ST is designed to examine the dissolving speed and degree of solid preparations such as tablets or capsules in specified solvents. The ZRS-8ST adopts a classical modeling structure with high stability, reliable performance, and convenient operation for routine pharmaceutical quality control.
This new-generation drug dissolution tester incorporates modern mechanics and intelligent electronic control, offering durable performance and streamlined workflows for dissolution method development and routine QC testing.
The AELAB ZRS-8ST features a double-functional design with an electric lifting head and automatic overturn function, enabling rapid paddle or basket exchange without manual repositioning. All paddle rods, basket rods, and rotating components are constructed from high-grade Stainless Steel to meet Chinese Pharmacopoeia requirements. The instrument supports installation of eight dissolution cups with 185 mm height and optional shading cups. A thermostatic water bath integrates temperature sensors for fast response and stable thermal regulation.
The ZRS-8ST regulates controlled rotating paddle or basket motion between 20–250 rpm with 1 rpm resolution. Dissolution vessels are immersed in a precisely controlled water bath, offering 0.1°C resolution and ≤±0.3°C accuracy. The system monitors multi-point bath temperature and automatically preserves operational parameters. Up to nine programmable sampling periods (1–999 min each) enable compliant timing sequences for dissolution profiling.
The model incorporates intelligent menu navigation via a large LCD screen, enabling clear visualization of test status and parameter settings. It supports internal method storage, automated timing, and pharmacopoeia-based parameter calling for streamlined regulatory compliance.
| Model | Specifications |
|---|---|
| ZRS-8ST | 8 paddles and 8 cups, 20–250 rpm, ≤±0.3°C temperature accuracy, 9 sampling periods, electric lifting/overturn head, 1100 W heating power |
The AELAB ZRS-8ST is suitable for dissolution testing of tablets, capsules, solid dispersions, coated formulations, and other oral dosage forms. It supports R&D, QC laboratories, academic institutions, and regulatory environments requiring accurate dissolution profiling for pharmaceutical development and batch release.
The instrument meets Chinese Pharmacopoeia requirements for dissolution testing and adheres to GLP-oriented operational standards. Each unit undergoes strict AELAB quality verification to ensure traceable accuracy, stable performance, and long-term durability.
| Amplitude of swing of stirring paddle | ≤0.3mm |
| Amplitude of swing of rotation basket | ≤0.8mm |
| Deviation of rotating rod and axle of dissolution cup | ≤1mm |
| Speed adjustable range | 20–250 rpm |
| Rotating speed resolution | 1 time/min |
| Water bath temperature adjustment range | room temperature: -45°C |
| Temperature resolution | 0.1°C |
| Temperature control accuracy | ≤±0.3°C |
| Number of sampling periods | 9 different sampling periods can be preset. |
| Time of sampling period | 1–999 min optional for each period, 9 sampling periods can be counted down by sections. |
| Timing error | ±0.5 min |
| Pharmacopoeia parameter calling | The instrument saves 300 dissolution test parameters in Chinese Pharmacopoeia, which can be called randomly. |
| Large screen display / operation | Large screen liquid crystal display and intelligent menu operation. |
| Head lifting & overturn | The head can lift and descend automatically and attaches overturn function. |
| Water bath monitoring | Electronic sensor monitors temperatures of various water bath points. |
| Standard configuration | 8 paddles and 8 cups |
| Small cup accessories | Optional |
| Electrical heating power | 1100 W |
