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E-mail
info@dataphys.com.cn
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Phone
18811105083
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Address
Room 1208, Satellite Building, Building 51, No. 63 Zhichun Road, Haidian District, Beijing
Beijing Oudelino Instrument Co., Ltd
Deeply understand the functional characteristics of each component of the lotion stability analyzer
Date: 2025-10-09Read: 0
The lotion stability analyzer can evaluate the stability of lotion, suspension, foam and other multiphase systems non invasively, quickly and accurately, and predict the failure process of stratification, flocculation, coalescence and so on. Its working principle integrates optical, mechanical, and intelligent algorithms, and monitors physical instability changes in real time by scanning sample tubes. The key to product optimization and quality control is to deeply understand the functional characteristics of each component of the lotion stability analyzer.
1. Lighting system
Near infrared light source (NIR): the wavelength is usually 870-880nm, which can penetrate opaque or high concentration samples (such as cream and paint) to avoid visible light being obscured;
LED array: Provides stable, uniform, and low heating illumination, prolongs the lifespan of the light source, and ensures long-term data consistency.
2. Optical detection system
Linear scanning sensor (CCD/CMOS): Scan line by line along the height direction of the sample tube to obtain the distribution map of transmittance or backscattered light intensity;
High resolution imaging: up to several data points per millimeter, accurately identifying small flocculation layers or interface movements;
Dual mode detection:
Transmitting light: reflects the particle concentration and sedimentation/uplift process;
Backscattered light: sensitive to changes in particle size (such as agglomeration and flocculation).
3. Sample rack and temperature control system
Multi channel sample rack: can accommodate 6-12 sample tubes simultaneously, achieving high-throughput parallel testing;
Precise temperature control module:
Semiconductor (TEC) or water bath temperature control, typically ranging from 4-80 ℃;
Programmable temperature cycling (such as freeze-thaw testing) to accelerate aging assessment;
Temperature uniformity ± 0.5 ℃, ensuring reproducibility of the experiment.
4. Mechanical scanning platform
Stepper motor drive: drives the light source and detector to move vertically along the sample tube, with adjustable scanning speed;
Precision guide rail: ensures smooth scanning, no vibration, and a position repeatability accuracy of micrometer level;
Automatic zeroing and calibration: Automatically locate the starting point before each scan to eliminate mechanical errors.
5. Data processing and analysis software
Stability Index (TSI): Automatically calculates the overall instability level of the sample, with larger values indicating greater instability;
Interface tracking: dynamically depicting the movement speed and thickness of the cream layer and sediment layer;
Flocculation rate analysis: quantification of agglomeration kinetics process;
3D graph and time evolution curve: visually display the structural evolution of the sample over time.
6. Sample tubes and accessories
Standard glass tube: uniform inner diameter, optically transparent, suitable for most systems;
Disposable plastic tube: avoids cross contamination and is suitable for biological or high viscosity samples;
Sealing cover: prevents solvent evaporation or contamination, maintains system closure.