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The Plastic Stopper 12/21 is a reliable and efficient sealing accessory designed to ensure airtight and leak-proof closures for bottles, jars, and containers. Crafted from high-grade plastic, this stopper offers exceptional durability and resistance to wear and tear. Its versatile 12/21 size makes it compatible with a wide range of container openings. The stopper is easy to install and remove, providing a secure fit that prevents spills and contamination. Ideal for both personal and professional use, it is perfect for storing liquids, powders, and other materials, maintaining freshness and extending shelf life.
Key Features
- Durable Construction: Made from high-quality plastic for long-lasting performance.
- Leak-Proof Seal: Provides a secure, airtight closure to prevent spills and contamination.
- Universal Fit: Compatible with various container sizes due to its 12/21 dimensions.
- Easy to Use: Simple to install and remove for quick access and convenience.
- Versatile Applications: Ideal for use in kitchens, laboratories, and industrial settings.
Precautions
- Avoid High Temperatures: Do not expose the stopper to extreme heat to prevent deformation.
- Clean Regularly: Ensure the stopper is cleaned thoroughly to avoid contamination.
- Check for Damage: Inspect the stopper for cracks or wear before use.
- Proper Storage: Store in a cool, dry place away from direct sunlight.
- Use with Compatible Containers: Ensure compatibility with the container size to maintain an effective seal.
Frequently Asked Questions (FAQs)
Question: What materials is the Plastic Stopper 12/21 made from?
Answer: The stopper is made from high-quality plastic designed for durability and a secure seal.
Question: Can the stopper be used for both liquids and powders?
Answer: Yes, it is suitable for sealing both liquids and powders, ensuring freshness and preventing spills.
Question: How do I clean the Plastic Stopper 12/21?
Answer: Clean the stopper with warm soapy water and allow it to air dry completely before reuse.
Question: Is the stopper resistant to chemicals?
Answer: The stopper offers resistance to most common chemicals, but it is best to check compatibility with specific substances.
Question: What sizes of containers are compatible with the 12/21 stopper?
Answer: The stopper fits containers with a 12mm to 21mm opening, making it versatile for various sizes.


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Borosilicate Glass Beaker
Plastic Beaker (Euro Design)
Plastic Beaker (Printed Graduation)
Test Tube Brush
Measuring Cylinder Brush
Conical Flask Brush
Volumetric Flask Brush
Round Bottom Flask Brush
Glass Beaker Brush
Pipette Brush
Wash Bottle Brush
Borosilicate BĂ¼chner Flask
Borosilicate Erlenmeyer/Conical Flask
Borosilicate Pear-Shaped Flask
Borosilicate Round Bottom Flask
Plastic Conical Flask
Plastic Volumetric Flask
Bunsen Burner
Spirit Lamp
Borosilicate Glass Burette
Plastic Burette
Capillary Tube
Centrifuge Tube
Test Tube
Ria Vial
Vacutainer Tubes
Syringes
Student Microscope
Binocular Microscope
Dissecting Microscope
Microscope Glass Slides
Cover Slip
Inoculating Loop
Slide Box
Lamps
Oils
Beaker Tongs
Crucible Tongs
Flask Tongs
Borosilicate Glass Funnel
Plastic Funnels
Wash Bottle
Borosilicate Glass Reagent Bottle
Plastic Reagent Bottle
Borosilicate Measuring Cylinder
Plastic Measuring Cylinder
Borosilicate Glass Graduated Pipette
Borosilicate Glass Volumetric Pipette
HB Pipette
Pasteur Pipette
Micropipettes
Micropipette Tips
Filter Paper
Litmus Paper
pH Paper
Chromatography Paper
Plastic Petri Plates (Sterile)
Glass Petri Plates (Non-Sterile)
Safety Goggles
Lab Coats
Gloves
Masks
Shoe Covers
Hair & Beard Covers
Steel Spatula
Plastic Spatula
Hitachi Sample Cup
Plastic Scoop
Plastic Medicine Cup
Dissecting Tool Kit
Dissecting Forceps
Hemostatic Forceps
Blood Culture Bottle
Urine Container
Wooden Swab Stick
Test Tube Holder
Test Tube Racks
Magnifying Glass
Watch Glass
Mortar and Pestle
Coplin Jar
Plastic Stirrer
Glass Stirrer
Crucible
Tripod
Wire Mesh
Laboratory Thermometer
Tourniquet
Alcohol Swab
Blood Lancet
Bandage
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