U.S. Solid USS-FX, Manual

X.

Warnings and Notes

1.

NEVER START ULTRASONIC OUTPUT WHEN THE PROBE TIP 

IS 

EXPOSED IN

THE AIR

2.

The apparatus 

swithes the

 power supply without industrial frequency

transformer. Don’t randomly

 touch

 after opening the generator housing to

avoid electr

ic 

shock.

3.

The apparatus does not need 

to 

warm up and should be grounded well

when

being used.

4.

Use it in 

an

 environment free from moisture, sunshine and corrosive

gases.

5.

Be sure the platform is tightly fixed to the rod, 

and 

the ultrasonic probe is

in

liquid and not touching the walls of the sample vessel.

6.

The liquid temperature will increase rapidly due to the cavitation effect
during crushing. The user should pay attention to the temperatures for
different cells. It is suggested 

that the user 

adopt multiple short time

crushing (not

longer than 5s each time) and ice bath cooling.

7.

It is 

practice-proven

 that multiple short

-

ime operations, working

time 1

-

2s

and interval time 1

-

2s, have better effects than continuous long

-

time

operations. The long interval time can be set to avoid the heating of

liquid.

Additionally, continuous long

-

time operations are subject to no load

operations to shorten the apparatus service lifetime.

8.

The horn end will become rough due to cavitation corrosion after being
used for a period of time. Use oil stone or rasper to smooth

 it

. Otherwise,

it

will influence the working effects.

9.

In general, the volume of homogenization media should be 3 to 10 times
the net volume of the solid sample.  Pre-chopping the sample into pieces
less than 1 mm in cross-section will significantly decrease the time of
homogenization.