Specifications and Scales

Nominal capacity: 1.5 mL
Actual maximum capacity: approximately 1.7 mL (to prevent spillage during centrifugation)
Scale markings: Clearly printed scales, segmented scales from 0.2 mL to 1.5 mL
Accuracy: Laboratory microsampling standard accuracy
Bottom shape of the tube: Conical pointed bottom - conducive to sediment aggregation and micro-liquid recovery

Key Structural Features

Lid-on-lid design
Single-handed opening and closing, quick operation
Sealing lid with tight clasps, strong centrifugation does not pop off, no liquid leakage
Sanded marking area
The tube lid and tube body have a white marking area, can be written with a pencil or marker pen, does not smudge
Highly transparent tube body
Clear observation of liquid volume, sediment, and color changes

Performance Parameters

Centrifugal tolerance: ≥ 20,000 ×g (common high-speed centrifuge)
No heat source / No DNase / No RNase (molecular biology grade)
Sterile: Gamma-ray sterilization (medical / PCR grade)
Low adsorption: High-quality model with low adsorption on the inner wall, reduces protein and nucleic acid loss

Main Applications

Sample preservation: Serum, plasma, whole blood, urine, saliva, etc. clinical specimens
Nucleic acid extraction: DNA/RNA extraction, purification, PCR system preparation
Protein experiments: Protein samples, enzyme reactions, antigen-antibody reactions
Microorganisms: Small amounts of bacterial solutions, specimen pre-treatment
Sample storage and centrifugation: Rapid separation and precipitation of micro-liquids

Core standards and selection principles 

Qualifications: Medical consumables must comply with medical device standards (such as ISO 13485), possess a medical device registration certificate, and sterile products must provide an ethylene oxide sterilization report. 

Anti-pollution: For molecular experiments, priority should be given to using consumables without enzymes, DNA, or heat sources; for microbiological experiments, sterility is mandatory; avoid reusing disposable consumables. 

Compatibility: Consumables must be compatible with the instrument (such as PCR instrument well type, centrifuge rotor size, pipette interface). 

Additional Explanation

Medical laboratory consumables are mostly used once and then discarded. The purpose is to prevent cross-contamination and ensure the accuracy of the experimental results. When purchasing, it is necessary to distinguish between ordinary laboratory grade and diagnostic medical grade products. For clinical sample testing, products that comply with medical device regulations must be selected.