Glass blood sugar tube with potassium oxalate, ammonium oxalate, potassium
oxalate/ sodium fluoride, heller-paul, sodium fluoride, edta salt or their
compound (powder or diphasic agent);

gray conventional butyl closure (e3) or new-typed closure with plastic cover (d1);

paper label;

no charge layer-coated interior (similar to human vein);

draw volume can be specifically designed according to the need