Abstract An improved primary method for the calibration of liquid flow meters based on dynamic weighing has been adopted at Istituto Nazionale di Ricerca Metrologica. Compared to other methods currently in use, submerged jet flows, proposed advantage not requiring correction hydrostatic buoyancy force exerted immersed tube. This is possible since immersion depth tube held constant during proces...

The certification of Standard Reference Material (SRM is a registered trademark of NIST) 3103a As Spectrometric Solution is based on the gravimetric preparation value that is verified by inductively coupled plasma optical emission spectrometry (ICP-OES) measurements. A disagreement between the gravimetric and the spectrometric values for a batch of As calibration solutions led to the discovery ...

A nanoenabled gravimetric chemical sensor prototype based on the large scale integration of single-stranded DNA (ss-DNA) decorated single-walled carbon nanotubes (SWNTs) as nanofunctionalization layer for aluminum nitride contour-mode resonant microelectromechanical (MEM) gravimetric sensors has been demonstrated. The capability of two distinct single strands of DNA bound to SWNTs to enhance di...