Research Instruments HandiLaz Mini User manual

Particle Count Meter
1
Quick start guide
Before Use
Unpack the instrument carefully and keep the packaging for future
reuse.
Fully charge the batteries before first use, using the charger
provided. Fit the batteries in the correct orientation following the
diagram on the charger. The batteries are charging when the lights
are orange, and charged when the lights turn blue. A flashing light
indicates a faulty battery.
Open the battery compartment
on the HandiLaz Mini, and fit the
batteries following the diagram
inside.
Note that running from the mains
adaptor does not charge the
batteries.
Research Instruments Ltd
Bickland Industrial Park, Falmouth, Cornwall TR11 4TA , UK
Telephone: [phone]
e-mail: [email protected]
Remove the plastic cap from the
meter and push on the sampling
tube.
Document no. 7-90-080QS, issue 1.1, 31st January 2007

Particle Count Meter
2
Warnings
Read The Manual Before Use.
Do Not Allow Liquids to Enter the Sample Tube.
Refit Protective Cap onto Sample Tube When Not in Use.
Operation
To switch on, press the POWER button.
To switch off, press and hold the POWER button.
We recommend that the unit is set to counts per m3as this allows
direct comparison to EC recommended figures. See page 5-2 of
the manual.
To take a quick reading, turn the meter on and press the START/
STOP button.
When the display shows “PRESS START”, press the START/
STOP button again.
There is a ten-second countdown and the display shows
“READY”.
Press the START/STOP button again to start measurement. The
meter will record for one minute and display the overall readings.
No user serviceable parts inside. Do not open the meter.

Particle Count Meter
3
The HandiLaz Mini is designed primarily for sampling in flow
cabinets, cleanrooms and other filtered air environments. Non
filtered air has a relatively high particle count so if the meter is
used in a normal indoor environment the meter will work correctly
but the residual particles must be flushed from the meter before it
will accurately measure in a low particle count area.
A zeroing filter is provided to assist with this.
Remove the filter from the sealed packet, remove the protective
cap from the sample tube, carefully fit the supplied clear tube onto
the sample tube and to the zeroing filter. Make sure the arrow on
the filter points towards the HandiLaz Mini.
Set the meter to continuous sampling mode (page 3-4 of the
manual) and run the meter until the display reads zero. It may
help to tap the sample tube gently with the fingers to dislodge any
remaining particles from inside.
Keep the Zeroing Filter in a sealed bag so it can safely be used
again. The filter needs to be replaced if the HandiLaz Mini gives
a low airflow warning, (Fault Code F), when using the Zeroing
Filter.
Filter shown in sealed pack as supplied

Particle Count Meter
4
Interpreting the results
EC directives and guidelines
Refer to Directive 2004/23/EC, the EC Guide to Good Manufacturing
Practice, Revision to Annex 1 (copies included), and any other
legislation currently in force.
Current EU guidelines, recommend that specimens in IVF
laboratories are manipulated in “Grade A” air. This means that
there should be fewer than 3500 particles of 0.5µm and above per
cubic metre and no particles of 5µm and above.
The Display
Particle Size
Number of
particles
Units
The number of particles is displayed in scientific notation.
For example: 1.23E+4 = 1.23 x 104 = 12300 counts/m3.