The sodium citrate anticoagulant test tube used for blood coagulation and blood sedimentation is very high for the environment and the water used to dissolve it. If improper process and production environment, or the dissolved water purity didn't meet the requirements, etc., then to produce the product after a period of time of sodium citrate solution in a test tube will be floc (mold), resulting in distortion of the inspection results. Due to the good hydrophobicity of the PET pipe, this type of pipe is not specially packaged and is recommended to be used up within three months.
