The method uses NIR spectroscopy and a test element comprising a support, and a substantially constant light path defining layer comprising {HEAD ~ a diffusely reflecting material} that is a) sufficiently porous in all directions as to allow {TAIL ~ a liquid} to spread uniformly in all directions, and b) homogeneously reflects at least 95% of NIR radiation 
The method uses NIR spectroscopy and a test element comprising a support , and a substantially constant light path defining layer comprising { HEAD ~ a diffusely reflecting material } that is a ) sufficiently porous in all directions as to allow { TAIL ~ a liquid } to spread uniformly in all directions , and b ) homogeneously reflects at least 95 % of NIR radiation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH