Up to 5 ml starting volume; concentrate up to 100x
The BJP concentrates urine through the absorption of water by absorbent pads located on the underside of an ultrafiltration membrane
Bence Jones protein will be retained on the membrane surface in the front compartment of the BJP unit because it has a 7.5 kDa MWCO membrane, a molecular weight cut-off far from the molecular weight of Bence Jones protein itself
A BJP 5 unit filled with 5 ml urine typically takes about 30-40 min for a 100 fold concentration with recoveries of at least 95-98% BJP
