ISO 8573-1:2010 Classes 1-5 specify Purity Classes for maximum number of particles, identified by particle
size, maximum number of particles per m3.
Particle size ranges identified by ISO 8573-1:2010 are specified in micrometer (µm):
0.1 – ≤ 0.5 µm - not included on reports*
0.5 – ≤1.0 µm
1.0 – ≤5.0 µm
≥5.0 µm
The Sampling Data Table displays the particle size channels and related particle counts.
µm = particle size in micrometer
∆ = number of particles detected of the specified size
∑ = sum of all particles detected of the specified size and larger
To evaluate data according to ISO 8573-1:2010 specification, always use the Delta (∆) column.
0.5 – ≤1.0 µm = ∆ column, 0.5 channel
1.0 – ≤5.0 µm = ∆ column, 1.0 channel and 2.5 channel
≥5.0 µm = ∆ column, 5.0 channel and 10 channel
Note: ISO 8573-1 states “where it is determined that there are particles with a size greater than 5µm, then the classification of 1 to 5 cannot be applied.”
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Interpreting Data per ISO 8573-1:2010
©2019 Trace Analytics, LLC. All rights reserved. Page 7 of 9
Cleaning the Black Bev-a-Line™ Particle-Free Tubing
This includes both the ¼” OD black tubing used to connect to the air outlet and the clear particle free tubing
connected between the diffuser and the LPC.
1. Remove the stainless steel plugs from both ends.
2. Direct a stream of isopropanol inside the tubing.
3. Hand-tighten the plugs onto the end fittings.
4. Move the tubing so that the internal surfaces are thoroughly rinsed.
5. Remove the plugs and expel the isopropanol into a suitable container.
6. Repeat the rinsing procedure twice for a total of three.
7. With the two outlets facing downwards, allow the isopropanol to evaporate for about 30 seconds.
8. Hand-tighten the plugs onto the tubing.
Isopropanol clear out before sampling
1. Assemble the sampling components EXCEPT do not attach the outlet end of the ½” OD black tubing to the LPC.
2. Connect the ¼” OD black tubing to the compressed air supply.
3. Adjust the outlet pressure to 40-100 psig and allow the air flow to evaporate the isopropanol. This is accom-
plished when no liquid isopropanol is visible at the outlet of the ½” OD black tubing.
HPD III High Pressure Diffuser
After sampling a gas source with a high concentration of particles, it may be necessary to purge the diffuser with
filtered gas to help remove contaminants in the system.
1. Remove the clear tubing from the LPC Supply Inlet.
2. With a length of clean ¼” Bev-a-line black tubing to the Matheson filter on the gas source, purge at up to
100 psig for as long as 10 minutes.
Setra 8000 Laser Particle Counter (LPC)
NEVER ATTEMPT TO CLEAN THE LPC! Introduction of any liquid into the LPC will cause it to be
inoperable and may cause irreparable damage to the sensing cell.
Avoiding contamination from the environment
1. Keep the fittings (tubing plugs and device caps) in place when not sampling.
2. Keep the plugs and caps in a closed zip bag during sampling. Do not allow ambient particulate to accumu-
late on the fittings.
3. Keep sample path components in provided zip bags when not sampling.
Determine if contamination exists
1. Run the LPC Background test (see page 3); the results should be near zero for all particle ranges.
2. Run the Tubing Background test (see page 4); the results should be below those displayed below:
3. If the Background Limits are exceeded, contamination may be a significant portion of the sample readings.
Cleaning air flow path components
Items needed for cleaning:
• Wash bottle, pre-cleaned
• Isopropanol, semiconductor grade; must be purchased by you. e.g., Honeywell 17604, Sigma-Aldrich 40301
• Safe collection and disposal of isopropanol used in cleaning. While isopropanol is the primary component of
rubbing alcohol, is should not be used without the appropriate safeguards. Consult the MSDS for the
purchased isopropanol for safe handling.
• Fill the wash bottle with isopropanol to no higher than the maximum fill level indicated on the side of the bottle.
• A moderate squeeze of the wash bottle, about ½” on each side, lasting about 5 seconds will deliver approxi-
mately 20 mL of isopropanol.
Note Regarding the Matheson (Silver background tubing) Filter:
The only portion of the Matheson filter that will be contaminated is the point at which the ¼” OD black tubing is
attached. Clean by rinsing the external threads and throat with isopropanol from the wash bottle. Hand-tighten
the provided nut onto the threaded fitting.
ISO 8573-1:2010 Purity Classes
Compressed Air Particle Contaminant Maximum Limits
0.1<d≤0.5 µm* 0.5<d≤1.0 µm 1.0<d≤5.0 µm
5.0 µm
1
<20,000
<400 <10 0
2 <400,000 <6,000 <100 0
3 - <90,000 <1,000 0
4 - - <10,000 0
Error Conditions
The Setra 8000 will indicate if it detects an operating condition that may prevent it from giving an accurate analysis.
If at any time during sampling, or testing this red warning sign appears. Stop testing immediately and contact Trace Analytics
for assistance before proceding. The service team can be reached at: 512-263-0000 ext 3
Continuing to use the SETRA after the warning appears could result in invalid test results, or could damage the machine and
require replacement.
