ESR Tubes are used for Westergren sedimentation rate determination. The tubes contain buffered sodium citrate solution as an anticoagulant. Citrate concentration of either 0.109M(3.2%) or 0.129M (3.8%) is available. The mixing ratio is 1 part citrate to 4 parts blood.

REF#

645122004 1.28ml/8*120mm, single scale mark, 3.8%, GLASS, conventional cap/black, paper label

645120004 1.28ml/8*120mm, single scale mark, 3.2%, GLASS, conventional cap/black, paper label

645122005 1.28ml/8*120mm, double scale marks, 3.8%, GLASS, conventional cap/black, paper label

645120005 1.28ml/8*120mm, double scale marks, 3.2%, GLASS, conventional cap/black, paper label