This blower has a metal nozzle with a protective plastic cover. An inlet
valve is located at the base of the bulb in order to prevent air from
entering through the nozzle.
However, while this approach to dusting a sample is widely popular
in some laboratories worldwide, in part because once purchased it is
perceived to be "free" (e.g. no need to purchase duster cans any more),
we do not recommend its use for critical EM applications. The simple
matter is that the air in the average room is literally filled with
particulates of varying sizes, from particulates you can actually see with
the eye to those that are submicron and respirable. So while one might
blow away particulates clinging to a sample with the SPI Rubber Bulb Dust
Blower, one runs the real risk if depositing new particles, some times
more than what had been removed in the first place! And in many
laboratories, especially those setting the highest standards for
cleanliness, this kind of "duster" is just not thought to be good enough.
So we offer this product only because our customers often times ask for
this product, but in no way do we want our offering it as part of our
product line to have the appearance of being some kind of tacit
recommendation (as is the case in general for our EM products) for use
in electron microscopy.
Bulb diameter: 55 mm
Nozzle length: 15 mm
Total product length: 90 mm