:: Laskin Nozzle Generator ::

Laskin Nozzle Generator

The SPG range of generators are self standing and constructed mainly from aluminium. The generator is fitted with its own air filter regulator allowing direct connection to an air supply at between 3.5 bar (SPG150) and 10 bar. The nozzle pressure is then set to 1.4 bar with the regulator control. A quick connector is provided for easy connection to your air supply. Each nozzle is individually controllable with an on/off valve giving maximum control of the output aerosol. These generators are designed specifically for the aerosol filter test industry for the testing of filters at point of manufacture and in-situ.

The principal of operation is the pneumatic shearing of the oil by high velocity gas which produces a well defined aerosol output. The gas may be any non-toxic gas such as compressed air, argon, helium or nitrogen. Gas consumption is 21.5 litre per minute per nozzle per hole at a pressure of 1.4 to 1.7 bar(20 - 25 psi). The output is nominally 3 mg/minute per output litre/per nozzle.

These generator may be used with most light oils. The most common of the light oils are Ondina EL, Emery 3004, DOP or DEHS - both plasticisers. The particle size produced meets the requirements of all international filter test standards and in particular the requirements for BS5295 (PD6609-2), BS5726, IEST RP006-002, NSF 49 and ISO14644-3 (when published).

The SPG-150, is the smallest in a family of standard Laskin Aerosol Generators. It is capable of providing sufficient aerosol to challenge a 900 m3/hr system at 20 microgram per litre of challenge aerosol. The SPG-300 is slightly taller than the SPG-150 and is fitted with a second nozzle. Using the two nozzles, systems as large as 1800m3/hr may be challenged to 20µg/l aerosol concentration.

Both generators are provided with an air regulator to control the inlet air pressure (maximum 10 bar) to the required 1.4 bar nozzle pressure. The SPG-300 is provided with full flow ball valve to allow either one or two operational nozzles.
DOP600C10 Laskin Nozzle Aerosol generator with built in compressor is designed to provide small quantities of aerosol suitable for challenging single filter systems such as installed in LAF and MBSC. The generator is also provided with a compressed air input which may be used in place of the in-built compressor, making it suitable for operation in hazardous areas. An internal baffle plate minimises large droplets. Two nozzles each with two holes are provided.

Description No. of Laskin Holes Air Reqmt. l/min Air pressure Reqd bar Smallest test system @ 100 µg/l Largest test system @ 20 µg/l Add to Cart SPG-150 Single Nozzle Laskin Generator 4 86 3.5 – 10 182 900 SPG-300 Two Nozzle Laskin Generator 8 172 4.5 - 10 182 1800 DOP600C10 self contained 2 nozzle Laskin Generator 8 172 4.5 - 10 182 1800

Optional Accessories

Sparge Pipes
The DOP Filter Test requires that the challenge aerosol be fully mixed in the system air stream by the time the challenge reaches the filter. In practise this may be difficult to achieve. This is difficult to achieve if the aerosol is directly injected into a LAF. The Sparge Pipe Kit provides you with the tools to ensure good aerosol distribution at the point of injection. Correctly applied this allows challenge aerosols to be introduced as close as 1 metre from the filter and still achieve a homogenous aerosol challenge.

The kit is filled with sparge pipes and fittings of different lengths to allow assembly to suit the site requirements. Once used the sparge pipes are removed from the system under test and stored in the easy to carry transport bag.

The Sparge Pipe Kit is designed to work in conjunction with the Positive Injection Pump (PIP) family of aerosol blowers. Purchase of the Sparge Pipe Kit is not recommended if you do not have access to a PIP.

Description Add to Cart Sparge Pipe Kit

Positive Injection Pump (PIP)
Allows the safe introduction of aerosol to positive pressure environments. Aerosol is drawn into the PIP at its suction point and ejected under pressure through a large bore flexible pipe. The system is provided on a stainless steel stand.

Description Add to Cart Positive Injection Pump

Shell Ondina EL Oil
Shell Ondina EL Oil is almost exclusively used in the UK as an oil to produce a well defined aerosol for presenting to a filter during a DOP Filter Test. It is probably the best tested oil in the world from a health and safety perspective as it is used by Fire Brigades and the BBC in the production of aerosols. Shell Ondina EL, an extra Light paraffin oil, is clear and odourless. The oil may be used in pneumatic Laskin Nozzle Generators or in Thermal Generators.

Description Add to Cart Oil Shell Ondina EL, 2 lit Oil Shell Ondina EL, 10 lit

Transport Case
Transport case for aerosol photometer - clad aluminium fitted with carry handles and heavy duty foam.

Description Add to Cart Transport case for SPG-150 or SPG-300