Zefon bio-pump plus vs. Buck bioaire

[Guest guest]

Dear group,

I am considering a DC powered pump with AOC sampling in

mind. Two pumps I am examing are the Zefon bio-pump and the Buck

Bioaire. I am considering these two pumps primarily because of

their size.

At first glance this seems like a simple decision. The Buck Bioaire

is about $100 less, lighter (by about 3oz using the manufactures

product guides) and allows for a variety of flow rates between 5 and

20 lpm (yes I am planning on using only 15 lpm until I find another

use for it).

The bio-pump does have a case which saves me from having to get one

for the bioaire.

My mian concern for both pumps is the ability to primary calibrate

them. We have a nice DC powered dry-cal that makes in field

calibration (espcially when there is no power) a breeze.

Any thoughts?

Rob Whitesell, CIE, CMR

MMTS Environmental