Definition
A culture shaker is a laboratory equipment that integrates constant temperature culture and oscillation functions, mainly used to culture, mix or react biological or chemical samples under controlled temperature and oscillation conditions. It supports the process of uniform growth or uniform reaction of samples under dynamic conditions by providing stable environmental parameters.
How it works:
The core working principle of the device is based on the combination of temperature control and mechanical oscillation. The temperature control system usually uses electric heating elements and refrigeration units with temperature sensors to adjust the temperature in the chamber through PID algorithm to maintain the stability of the set value. The oscillation system is driven by a motor that produces horizontal or cyclothic periodic motion with adjustable frequency and amplitude to ensure adequate contact and mixing of substances in the sample container. The whole system coordinates temperature and oscillation parameters through a microprocessor to achieve synchronous control.
Measurement method
In operation, the measurement of key parameters follows the relevant standards. Temperature measurements typically use calibrated probe-type thermometers that are monitored at multiple locations within the chamber to assess temperature uniformity. The oscillation frequency is verified by a tachometer or optical velocimeter, and the amplitude can be calibrated with a displacement measurement tool. Measurements should be taken after the device has reached a steady state, and data over a continuous period of time is recorded to assess the range of parameter fluctuations.
Influencing factors
Equipment performance is affected by a variety of factors. Ambient temperature and ventilation conditions may interfere with the temperature stability inside the chamber. The material, shape, and loading of the sample container affect heat transfer and oscillation uniformity. The stability of the mechanical structure, motor performance and control algorithm accuracy of the equipment itself are directly related to the reliability of long-term operation. In addition, fluctuations in the supply voltage may also lead to parameter deviations, so it is necessary to ensure that the power supply conditions meet the equipment requirements.
Applications:
Culture oscillators are widely used in many fields. In biotechnology, it is used for microbial culture, cell suspension culture, or enzymatic reaction studies. In environmental monitoring, it can be used for pretreatment and biodegradation experiments on water or soil samples. In the food industry, it is used in fermentation process simulation or shelf life testing. In the chemical field, it is used for mixing and temperature control in catalytic reactions or synthesis processes. Its applicability is based on experimental scenarios with precise requirements for temperature and oscillation conditions.
Key points of selection
Experimental requirements and technical parameters should be comprehensively considered when selecting. Temperature range and uniformity are the basic indicators that need to match the required interval for the experiment. The oscillation method (e.g., horizontal reciprocating or cyclodyclostic) and frequency range should be adapted to the sample characteristics. The chamber capacity and tray configuration must be compatible with common container specifications. The control interface should be intuitive and easy to use, with parameter storage and safety protection functions. The equipment material should be corrosion-resistant and easy to clean. Operating noise and energy consumption are also reference factors for sustainable operation. It is recommended to refer to the test methods for relevant performance in international or industry standards to verify compliance with equipment specifications.