Test Tube Screw Cap Specimen Pyrex 12*75

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Key Specifications
Dimensions: 12 mm outer diameter (OD) x 75 mm length.
Capacity: Approximately 5 mL to 6 mL.
Material: Borosilicate glass 3.3, which minimizes pH changes and prevents leaching of contaminants.
Closure: Deep-form threaded phenolic screw cap (typically black), often featuring a rubber or PTFE liner for a leak-proof, secure seal.
Bottom Style: Standard round bottom.
Marking Spot: Includes a permanent white enamel marking spot for easy pencil notation and labeling 
Performance Features
Thermal Resistance: Safely autoclavable at 121°C (15 psi for 15 minutes). These tubes can handle repeated sterilization cycles without clouding and are designed for heating by flame, hot plate, or oven.
Chemical Stability: Highly resistant to most acids, bases, and solvents.
Durability: Feature…

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