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Generic · Particle Counter for Cleanroom and HVAC, 6-Channel 0.3-10 Micron Meter
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The Generic 6-Channel is the right choice if your work is particulate verification: checking a cleanroom, comparing HVAC supply and return, or proving a filter change made a difference. It counts particles in six size bands from 0.3 to 10 micrometres using laser scattering and a 2.83 L/min pump, and it stores more than two million records for export over USB Type-C. It is the wrong choice if you want a general indoor air quality monitor that also reports CO2, volatile organic compounds or formaldehyde. The listing does not publish accuracy, zero-count or coincidence-loss figures, so treat it as a screening and trend instrument until you can verify it against a reference.
What six channels buy you that a PM2.5 number does not
A particle counter works by pulling air through a laser beam and measuring the light each particle scatters. The brightness of the flash scales with particle size, so the instrument can sort each event into a size band. The Generic 6-Channel sorts into six bands: 0.3, 0.5, 1.0, 3.0, 5.0 and 10 micrometres. Each band is a threshold, meaning the count reported for 0.5 micrometres includes everything at or above that size that the optics can see.
That matters because different problems live in different size ranges. Fine combustion and photochemical particles cluster at the small end. Dust from filters, ducts and construction tends to sit larger. Pollen and some spores are larger still. A single PM2.5 number collapses all of that into one figure, which is fine for a general air quality display but useless when you are trying to prove that a HEPA filter is seated correctly or that a duct cleaning actually removed what it was meant to remove. Six channels let you see the shape of the distribution, and the shape is the diagnostic signal.
The listing describes the technique as laser scattering and the sampling as active, with a built-in pump at 2.83 litres per minute, which is 0.1 cubic feet per minute. That flow rate is the standard cleanroom sampling rate, so counts can be compared with room classification work without converting. The listing does not publish the sampling time per reading, the coincidence loss limit or the zero-count specification, so you cannot use the Generic 6-Channel as a calibrated reference instrument on the strength of the listing alone.
The numbers the listing gives, and the ones it leaves out
The published figures are the six size channels, the 2.83 L/min flow rate, the 2.8-inch display, storage of more than two million groups of measurements, USB Type-C export, adjustable alarms, temperature and humidity monitoring, and language options including English, French, German, Italian, Spanish, Chinese and Russian. Those are enough to plan field use.
What is not published is just as important. There is no accuracy figure, no counting efficiency figure at 0.3 micrometres, no zero-count specification and no calibration interval. For a particle counter those are the numbers that decide whether a reading is defensible in a cleanroom qualification report. If you need that level of traceability, ask the seller for a calibration certificate and a stated counting efficiency before you buy. The listing also does not publish battery type, runtime or charge time, even though it describes the unit as portable. Plan on mains power or confirm runtime with the seller.
Temperature and humidity monitoring is listed, but the listing does not publish the sensor range or accuracy for either. Treat those readings as context, not as measurements you would report.
Sampling in the field: what 2.83 L/min means in practice
Flow rate sets how long you wait. At 2.83 L/min the instrument moves about 47 millilitres of air per second. A one-minute sample is roughly 2.83 litres. In a clean space where counts are low, you need longer samples to collect enough particles for a stable number, and the listing does not publish a sampling-time setting, so confirm how the unit is configured before you rely on short samples.
The built-in rear stand is a small feature with real field value. It lets you set the unit down at a supply vent or on a bench and read the display without holding it, which matters when you are comparing before and after readings at several locations. The listing describes comparing HVAC supply and return vents and checking before and after filter replacement, duct cleaning and air purification. Those are comparative tasks: the absolute number matters less than the difference between two readings taken the same way.
Keep the sampling method consistent. Same height, same distance from the vent, same duration. A particle counter is a trend instrument as much as an absolute one, and inconsistent sampling will produce differences that look like contamination but are really differences in how you held the probe. If your work is mainly filter and duct verification, the broader comparison in handheld particle counters for filter testing sets out the trade-offs between channel count and portability.
Records, export and the report you actually hand over
The listing states storage for more than two million groups of measurement data and transfer over USB Type-C. That is the part of the instrument that turns a site visit into a document. You can log a walkthrough, export the records and build a table of counts by location and size band. The listing does not publish the file format or the software required, so confirm that the export opens in a spreadsheet before you plan a reporting workflow around it.
Two million records sounds enormous, but a record is one logged sample, not one particle. If you log every minute across a long commissioning day, the storage fills faster than the headline suggests. For most field work that is still ample. The practical limit is usually how you label locations, not how many samples you can store. Decide your naming convention before you start, because the listing does not describe location tagging.
If your reporting needs are mainly about gases rather than particles, the Generic 6-Channel is the wrong instrument and a monitor with exportable gas data is the better fit; see air quality monitors with exportable CO2 data for that side of the job.
Who the Generic 6-Channel is for, and the buyer who should not buy it
The Generic 6-Channel suits the technician or facility engineer who needs a size-resolved particle count at a specific place and time. Cleanroom routine checks, HVAC commissioning comparisons, filter change verification and duct cleaning sign-off are all comparative particulate tasks, and six channels plus a standard flow rate are the right shape of tool for them. The adjustable alarms and the rear stand support unattended screening at a fixed point.
It is wrong for the homeowner who wants to know whether the air in a room is healthy. That buyer needs a multi-parameter indoor monitor that reports CO2, volatile organic compounds and particulate mass, and interprets them. The Generic 6-Channel reports particle counts by size and does not publish CO2 or gas sensing. It is also wrong for anyone who needs a certified reference instrument for cleanroom classification without first obtaining calibration documentation, because the listing does not publish accuracy or counting efficiency. And it is wrong for anyone who needs a personal exposure monitor worn through a shift, since the listing describes a portable bench instrument with a stand, not a wearable.
If you are choosing between a particle counter and a general monitor, the wider survey in air particle monitors covers the middle ground. The Generic 6-Channel sits at the diagnostic end of that range.
The short version for a buyer standing at the counter
Buy the Generic 6-Channel if your question is which particle sizes are present and whether a change you made reduced them. The six channels, the 2.83 L/min pump and the two-million-record export are the features that make that question answerable. Do not buy it if you want a general air quality readout, if you need a certified reference instrument without first obtaining calibration paperwork, or if the listing’s silence on accuracy, battery runtime and export format is a problem for your reporting. Ask the seller those questions before you commit.
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Frequently Asked Questions
Does the Generic 6-Channel measure CO2 or volatile organic compounds?
No. The listing describes particle counting across six size channels plus temperature and humidity monitoring. It does not publish CO2 or gas sensing. If you need those, a multi-parameter indoor monitor is the right class of instrument.
What is the accuracy of the particle count?
The listing does not publish an accuracy figure, a counting efficiency at 0.3 micrometres or a zero-count specification. Those are the numbers a cleanroom qualification report needs, so request them from the seller before relying on the Generic 6-Channel for compliance work.
How long does the battery last?
Not stated in the listing bullets. The unit is described as portable with a rear stand, but battery type, runtime and charge time are not published. Confirm with the seller if you plan to work away from mains power.
Can I export the data to a spreadsheet?
The listing states USB Type-C transfer and storage for more than two million groups of measurements. It does not publish the file format or any required software, so confirm the export opens in your analysis tool before you build a workflow around it.
Is six channels better than one PM2.5 reading?
For diagnosis, yes. Six size bands show the shape of the particle distribution, which helps distinguish fine combustion particles from larger duct and filter dust. For a simple general air quality display, a single PM2.5 figure is easier to read and cheaper.
Can I use the Generic 6-Channel for cleanroom certification?
Only with calibration documentation. The listing does not publish accuracy, counting efficiency or a calibration interval, so on the published information alone the Generic 6-Channel is a screening and trend instrument. Ask the seller for a calibration certificate before using it for formal classification.
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