Sampler Nano-ID™ Select

The Nano-ID Select is a wide-range sampler and is unique in that it spans the entire aerosol range from 2 nm up to 20 μm. Particles are collected simultaneously using both inertial deposition and diffusion, and separated into 12 size channels. The wide-range capabilities of this product are particularly useful when the area of interest simultaneously extends into the nano and micron regions while at the same time requiring a particle size distribution with sufficient resolution.

APPLICATIONS

Ideal for use in general purpose aerosol science applications where the size-resolved structure, mass resolved size distributions, morphology, or chemical composition of captured particles is required.
Traditional risk assessment studies of exposure-dose relationships to airborne particulates benefiting from in-situ sampling. Engineered Nanoparticles (ENP) - One of the major challenges in health assessment of exposure to man-made aerosols is determining the concentration of the contaminating particulate matter against a background of naturally occurring aerosols and other anthropogenic aerosols produced from processes such as combustion. The problem is particularly acute in the case of ENP that are deliberately designed and manufactured to provide specific, non-conventional functionality. There is concern that the very properties designed into the novel particles might pose greater risks to human health and the general environment. The Nano-ID Select has been proven through a variety of chemical and electron microscopy techniques to distinguish low levels of a target substance against the background atmospheric aerosols by up to a factor of 20,000. For example, engineered nano-silver has been detected at levels of 2 ng/m3 against a background aerosol concentration of > 40 μg/m3.

FEATURES

Accurate Particle Size Discrimination
Both sampling regimes of the Nano-ID Select have been designed to provide the accuracy expected from a laboratory instrument while built for field use. The low pressure adaptation of the cascade impactor minimizes sampling errors caused by turbulence and wall losses. Each stage in the diffusion cell optimizes the individual grid size used together with the number of collector screens. Since there are fewer collectors per channel (stage) to be analyzed, the time and cost associated with analytical testing is reduced. The result of the overall design is particle size discrimination that approaches theoretical limits, resulting in minimal channel overlap over the entire dynamic range of the instrument.

Portability
The size and weight of the unit allow for it to be easily transported (hand-carried) to the sampling location of interest. An on-board pump and flow meter eliminate the need for external equipment and simplify installation. A 24-hour programmable timer provides the option to auto-start if an initial delay is needed. Sampling can be continuous or segmented over the time range for optimal data collection tailored for the particular application.

Ease of Use
The 12 sample stages of the Nano-ID Select are completely accessible to the user without the need to disassemble the instrument. The inertial and diffusion sample collection substrates are off-the-shelf consumable items available from most scientific equipment supplier outlets. The time needed on average to begin sample collection (carrying the instrument to the desired sampling location, loading the collection substrates, programming if necessary, setting flow, then begin sampling) is approximately 10 minutes. The Nano-ID Select comes standard with a set of diffusion and inertial sample collection substrates prepared for use with TEM grids. This eliminates the need for using tape or adhesives to secure the grid and the possibility of destroying it after sample collection. The prepared substrate holders also guarantee the sample substrate is properly aligned and positioned.

The Nano-ID Select can be supplied additionally with a set of diffusion and inertial substrates suitable for use with TEM grids. This eliminates the need for using tape or adhesives to secure the grid and the minimizes the possibility of destroying or contaminating the sample after collection. The prepared substrates also guarantee the TEM grids are properly aligned and positioned during sampling.

SPECIFICATIONS

The Nano-ID Select is a wide-range sampler and is unique in that it spans the entire aerosol range.
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