WPI ST5191 Instruction Manual Download Page 2

ST5191/ST5193

The Steri-Lite Micro Bead Sterilizer is for the 

sterilization of small research instruments 

(forceps, scissors, etc.).  The instrument 

chamber is filled with glass beads, set to a 

high temperature (up to 300ºC). The high 

temperature eliminates bacteria, spores and 

other microorganisms.  The typical exposure 

time is about 10 seconds for sterilization of 

commonly used items, such as forceps, scissors, 

tweezers, scalpels, inoculation loops, etc.  

DISPLAY

The control panel has an LED display that 

displays the status of the instrument.
• 

LED is Flashing–The instrument is heating.

• 

LED is On–The instrument is holding the 
set temperature.

• 

LED is Off–The instrument is off. 

SETUP

Prior to sterilization, make sure the surgical instruments to be sterilized are free 

of tissue and other debris. They should be clean.
1.  Place the sterilizer on a clean, flat, stable surface with at least 7.5 cm of 

ventilation on all sides.

2.  Fill the chamber with the dry glass beads.  The chamber should be filled to 

approximately 5 mm from the top of the chamber. The chamber should be 

filled with 

glass beads only

!  Other materials used to fill the chamber void 

the warranty.

3.  Press the power switch on the back of the instrument to power it on. The 

actual chamber temperature displays. 

4.  Press the knob, and the set temperature light flashes.  Turn the knob to the 

desired temperature setting, and then press the knob for 2 seconds to set 

the temperature.  To stop the instrument from heating, press the knob for 

2 seconds.

5.  After the desired temperature is reached, insert the surgical instruments 

into the glass beads.

NOTE

: The top 2.5 cm of beads may not be within the recommended 

temperature for proper sterilization. To decontaminate 5 cm of an instrument, it 

must be inserted 7.5 cm into the beads.
To sterilize small instruments, place the instruments into the beads in the 

chamber for 15 seconds.  For larger surgical instruments, the recommended 

time is one minute.

SPECIFICATIONS

ST5191

ST5193

Temperature Range

Adjustable, 100 to 300ºC

Temperature Accuracy

 ± 5ºC

Ramping Time to Max.

 Approximately 25 min.

Dimensions (w x d x h)

 13 x 14.5 x 15.5 cm

 14 x 14.5 x 21.5 cm

Weight

2 kg

2.5 kg

Chamber Dimensions

40 x 80 mm (Ф x H) mm 40 x 140 mm (Ф x H) mm

Chamber Bead Capacity 150 g

300 g

Electrical

115 VAC or 230 VAC, 50-60 Hz

Power

120 W (B1201) / 250 W (B1202)  

Operating environment   4˚ C to 45˚ C       
Warranty

 2 years

CARE AND MAINTENANCE

WARNING: THE INSTRUMENT CHAMBER HEATS TO VERY HIGH 

TEMPERATURES (UP TO 300ºC).  THEREFORE, THE HOUSING MAY 

GET HOT (UP TO 60ºC). AVOID CONTACT WITH THE HOUSING OF 

THE STERILIZER AFTER THE CHAMBER IS HEATED.

The instrument comes with a cover/lid.  When not in use, we recommend 

covering the chamber to prevent dust and unwanted debris from entering the 

chamber.
Clean the instrument with a damp cloth and light detergent. DO NOT use 

solvents, as they may attack the steel or plastic housing.

Instrumenting scientific ideas

WORLD 

PRECISION 

INSTRUMENTS

NOTE

: This product is designed for RESEARCH USE ONLY.  It is not intended for 

clinical use.

Reviews: