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High-quality VacPlus vacuum blood collection tubes, 5ml capacity (13x100mm), featuring a clot activator (silica) and serum separation gel (yellow). This 25-pack of PET plastic tubes is ideal for various laboratory applications including biochemistry, immunology, serology, microbiology, toxicology, and protein electrophoresis studies. Each tube features a rubber stopper and an additional protective plastic cap with vertical external grooves. Ensure accurate and efficient sample processing with these reliable, leak-proof tubes.