人人妻人人藻人人爽欧美一区-亚洲国产AV一区二区三区-12孩岁女A处破娇小-性一交一乱一乱一视频

Description：
Gas bath thermostatic oscillator （also known as air temperature shaker），is a temperature-controlled constant temperature incubator, and the combination of biochemical oscillator apparatus，mainly applicable to major in college, medical, petrochemical, health and epidemic prevention, environmental monitoring and scientific research institutions for biological, biochemical, cell, bacteria and other liquid, solid-state compounds of oscillation.

Features:
1: Temperature precise figures.
2: creation of a Oxygenating hole, temperature working chamber Oxygenating sufficient.
3: with mechanical timer.
4: Universal spring test bottle rack is especially suitable for a variety of comparative test of the training preparation of biological samples.
5: variable speed, smooth running, easy operation safety.
6: lumen high quality stainless steel, good corrosion resistance.
7: S model with a significant number of gun models to facilitate the user precise control of experimental conditions, to meet the needs of users in sophisticated experiments.