NEPHELASER is a line of professional measuring instruments (Nephelometers based on analysis of laser diffraction technology - see here for details) for inhalable air quality, specialized particularly for PM10 (and fractions thereof), which are designed, manufactured and technically supported over time by Spraytecs Technologies Ltd, through scheduled maintenance intervals.


The NEPHELASER high speed nephelometers are available in various models, equipped with various accessories to allow precise measurements both indoor and outdoor contexts, depending on the functions and needs of the professional user.


The researcher, the teacher, the environmental professional-analyst, the quality and safety manager of public areas or workshops with workplaces exposed to air quality risks can choose the services and functions that best suit the type of areas to be controlled, while concentrations (and variations temporal) of PM10 and micro dust are recorded on a removable SD memory, at low cost and reliability independent by the temporary lack of electricity.


It is widely demonstrated that the air-suspended and inhalable concentrations of fine dust containing substances emitted by plants or vehicles or manufacturing processes constitute a threat to the public health of people, who stand or cross areas affected, at certain times or many times of the day, to overcoming of the thresholds set by the National  Health Institute, the European Environmental Agency (EAA) and the World Health Organization (WHO).


A precise and punctual documentation of PM10, PM2.5, PM1 dust concentration phenomena and, for more detailed analyzes, also of the concentration count per m3 of the smallest particles, i.e. 0.5 μm and 0.3 μm obtainable from Nephelaser Spraytecs, capable of simultaneously recording of different particle size classes on 6 channels, it is a valid aid for scientific research or evaluation of suspected air pollution hard situations, to support recovery / containment of the problem, and to validate the results obtained after use of such solutions. The reference of the measurements is to the concentration per cubic meter and to 1/10 of a liter, based on the size of the laser diffraction reading chamber of the instrument, and to the hourly capacity of the air intake micro-pump, absolutely silent and therefore suitable for reliefs even in indoor environments such as reading rooms, waiting rooms and offices.






It is also possible to measure (thanks to the Shot-REC mode,  the sampling and recording of 28 data and physical quantities at maximum frequencies between 0.8 and 1 seconds) the temporal variations of concentration in precise points of an area, allowing to record in real time the propagation in the atmosphere of the PM generated by an emissive source; for example it is possible to document, each second or less, the emission of dust that occurs during the passage of a polluting vehicle or during an industrial process in which there are puffs or leaks of fumes in some processing phases, recording the number of particles as a sampled number and gravimetric estimated weight, associated with recording date and time istant. By associating this data with one or more external cameras, new goals are available in the methods of analysis of the emission processes of fine dust in both indoor and outdoor environments.


The larger memory storage capacity and the more extended battery life (> 28 hours of recording) in his instruments class allow sampling at maximum speed (<1 sec) and accuracy of huge amounts of useful data, reaching new performance targets that are difficult to match in this class of portable professional tools.


A continuous measurement events campaign at max speed over 2 to 8 years can be recorded and contained in a single SD memory accessible in a convenient slot (depending on the capacity inserted in the NEPHELASER), user-replaceable memory in a few seconds. An important detail because even the time factor in a measurement campaign with multiple tools has a high value for the professional user. And the SD memory will store data without power for a virtually infinite time.


Reading and extracting data in real time on your PC, Tablet or Smartphone is possible via cable connection to the protected USB port of the NEPHELASER nephelometer, or through WiFi connection to web pages for some Nephelaser models.


The convenient ZONE function allows the very precise organization of the environmental data measurement / recording campaign, because it makes possible to assign a Zone name to each registration point, before the registration is started. At the end, the recording is suspended, to then assign a new zone name to the new point of the measurement map, from which to start sampling values again. The maximum number of assignable zones is over than 1.5 million for each SD memory used.


In some NEPHELASER models the proprietary laser sampling algorithms perform real-time corrections based on meteorological variations (relative humidity, barometric pressure, temperature) detected by quality sensors in the instrument, in order to improve the accuracy of the data collected,  without altering the actual characteristics of the sampled air fluid, because the air is not heated before being measured, thanks to the extended range of working conditions (from -10 ° to + 60 ° Celsius, from 0 to 98% of relative humidity without condensation) . In this way some aerodispersed substances in opaque gaseous form present in PM10 are maintained and detected, thus not destroyed during sampling.


NEPHELASER instruments are available for PORTABLE, mobile applications and for FIXED applications:


  • NEPHELASER 1 models are PORTABLE instruments, suitable for puntual but limited in time measures.


  • NEPHELASER Micro are FIXED instruments for puntual, very long time measures.














 Nephelaser 1 - A                                                                                                                                   Nephelaser 1 - D    






The NEPHELASER 1 - A, B, C models include: Aluminum briefcase / case with lock,  a Dual 2.4A power supply for fast charging via USB of a Nephelaser 1 + a phone,  Standard USB cable for charging only (easily available) in case of loss),  Shoulder strap for the case,  a Pin / button for energy saving mode change (some Nephelaser version only),  the Instrument sensor protection filters,  the User Manual.





Contact SPRAYTECS for any clarification or possible doubts related to potential critical issues, or related to the characteristics of particular environments or to substances present in aerosol fluids and/or present in your applications and measurement sessions.

In case of precise need of the customer, special solutions can be realized as new performances or accessories of our laser nephelometers.

New accessories are already under development.


Ask for the reference of the nearest NEPHELASER Dealer.


Contact us for an economic quotation request for:

  • a NEPHELASER tool,
  • a NEPHELASER complete set with instrument, accessories, protective aluminum case (if not already included in the model of interest)
  • the whole provision of contemporary measurement campaigns with the use of more NEPHELASER laser samplers and possible accessories
  • a NEPHELASER tool maintenance service















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