色翁荡息又大又硬又粗又爽小玲_欧美《熟妇的荡欲》在线观看_日本a√在线观看_欧美大片

Product Introduction：
SG-3031 reciprocating oscillator is mainly applied to large and medium institutions, medical, petrochemical, health and epidemic prevention, environmental monitoring and scientific research institutions as biology, biochemistry, cells, bacteria and other liquid, solid-state compounds shaking culture, is the ideal laboratory staff handy device.
Use：
first of all, installed separatory funnel，then boot，before the start knob to the slowest speed office, start to 500 beats / min. Chassis to properly grounded, please turn off the power when not in use, in case of emergency.

Features:
1, simple structure, easy operation
2, stable performance, speed adjustable
3, SG-3031S-based a number of significant speed and more functions, user-friendly control oscillation speed precise control of experimental conditions, to meet the needs of users in sophisticated experiments.

Technical parameters:
1: Total Power: 60w
2: Oscillation frequency: 0-360 times / min, stepless adjustable
3: The oscillation amplitude: reciprocating （rotary） 20mm
4: Clamping number: 50-250 separatory funnel 5.
5: Work Load: 20Kg
6: Working Size: 520 * 300
7: Dimensions: 520 * 300 * 230