Beyond color coding, several physical characteristics define Rubber stopper for Blood Collection Tube used in blood collection tubes:

 

  1. Material Composition

Rubber stoppers are primarily made from natural rubber or synthetic materials such as silicone. Natural rubber provides elasticity and a tight seal, while synthetic options may offer greater resistance to heat and chemicals. The choice of material can impact the stopper's performance, longevity, and interaction with the blood sample.

 

  1. Tightness and Sealing Capability

A well-designed rubber stopper must provide a tight seal to prevent any leakage or contamination. The stopper's design, including its diameter and height, is crucial for fitting securely into the neck of the tube. A proper seal also prevents atmospheric gases from entering the tube, which could affect the blood sample's composition.

 

  1. Chemical Resistance

Rubber stoppers should be resistant to various chemicals, particularly those that might be present in the blood or added through laboratory processes. This resistance helps maintain the integrity of the sample and prevents any adverse reactions that could compromise test results.

 

  1. Elasticity and Flexibility

The elasticity of the rubber material allows the stopper to maintain its shape and seal even after repeated use. This characteristic is essential, especially in laboratory settings where tubes may need to be opened and resealed multiple times during testing.