Polyethylene Flange Plug Cap 16mm Black Globe Scientific Pack 1000

Description

Product Overview

Globe Scientific’s 16mm black polyethylene flange plug cap is engineered specifically for laboratory test tubes that require a dependable, airtight closure. Constructed from high‑grade polyethylene, the cap combines chemical resistance with flexibility, allowing it to accommodate slight variations in tube dimensions without compromising the seal. The flange design features a recessed lip that fits snugly over the tube opening, distributing pressure evenly and reducing the risk of cracking or deformation during repeated insertion and removal. Each cap measures 16 mm in diameter, matching standard test tube specifications, and the black coloration provides visual contrast for easy identification among other lab supplies. Packaged in bulk quantities of 1,000 units, the product is ideal for high‑throughput environments such as research laboratories, quality‑control facilities, and educational institutions where consistent performance and inventory efficiency are paramount. Beyond its primary sealing function, the polyethylene material offers excellent resistance to a wide range of solvents, acids, and bases commonly encountered in analytical procedures, ensuring longevity even under aggressive chemical exposure. The caps are lightweight, contributing to reduced handling fatigue for technicians who frequently manipulate large numbers of tubes. Production tolerances are tightly controlled, guaranteeing uniformity across the entire batch and simplifying standard operating procedures. The product complies with industry standards for laboratory consumables, reflecting Globe Scientific’s commitment to quality and safety. With a proven track record since its introduction in 2014, this cap has become a trusted component for laboratories seeking reliable, cost‑effective solutions for tube management.

Usage

In routine analytical workflows, the 16mm polyethylene flange plug cap serves as a primary barrier against contamination and evaporation, making it indispensable for assays that demand precise volume control. It excels in environments where temperature fluctuations are common, as the material retains its elasticity from refrigerated storage up to elevated incubator conditions without cracking. Researchers conducting microbiological cultures appreciate the cap’s ability to maintain sterility while allowing easy access for sampling, thanks to its smooth interior surface that resists biofilm formation. In quality‑control laboratories, the caps are frequently employed to seal calibration standards and reference solutions, ensuring that concentration integrity is preserved throughout the testing cycle. Educational labs benefit from the clear visual cue provided by the black color, which helps students quickly differentiate between capped and uncapped tubes during complex experimental setups. The bulk packaging of 1,000 caps reduces the frequency of re‑ordering, supporting continuous operation in facilities with high sample throughput. Whether used in chemical synthesis, pharmaceutical development, or environmental testing, the cap’s universal fit and robust construction make it a versatile accessory across a broad spectrum of scientific disciplines.

Why Choose Us

Globe Scientific has built its reputation on delivering laboratory consumables that meet rigorous performance standards while remaining affordable for institutions of all sizes. Our polyethylene flange plug caps undergo a multi‑stage quality assurance process that includes material purity testing, dimensional verification, and seal integrity assessment under simulated laboratory conditions. This systematic approach guarantees that every cap leaving our facility adheres to the specifications outlined in the product data sheet, providing end‑users with confidence in repeatable results. The company’s manufacturing facilities are located in the United States, allowing for rapid response to customer inquiries and streamlined logistics for North American distributors. We also maintain a dedicated technical support team that can assist with compatibility questions, troubleshooting, and guidance on best practices for cap usage and storage. Sustainability is a core value; the polyethylene used in our caps is recyclable, and our packaging is designed to minimize waste while protecting the product during transit. By choosing Globe Scientific, laboratories gain access to a reliable supply chain, transparent product information, and a partner committed to continuous improvement based on user feedback. Our commitment to excellence is reflected in the consistent five‑star rating from customers who appreciate the cap’s durability, ease of use, and cost‑effectiveness.

Key Features

• High‑grade polyethylene provides chemical resistance to acids, bases, and solvents, extending cap lifespan in demanding environments.
• Precision‑engineered 16mm flange ensures a tight, leak‑free seal that prevents evaporation and contamination.
• Lightweight black design offers visual contrast for quick identification and reduces handling fatigue during high‑volume tasks.
• Bulk pack of 1,000 caps minimizes re‑ordering frequency, supporting continuous laboratory workflows.
• Dedicated customer support and technical assistance guarantee reliable service and guidance throughout product use.

FAQ

What types of chemicals can the polyethylene cap resist?

The cap is formulated from high‑grade polyethylene, which resists a broad spectrum of laboratory chemicals including common acids (such as hydrochloric and sulfuric acid), bases (like sodium hydroxide), and organic solvents (including ethanol, methanol, and acetone). While it offers excellent resistance, extremely aggressive reagents such as concentrated hydrofluoric acid should be avoided, as they can degrade most polymeric materials.

Can the cap be used with tubes of different diameters?

The flange is sized for a 16mm tube opening, which aligns with standard test tube dimensions used in most scientific settings. The flexible nature of the polyethylene allows the cap to accommodate minor variations in tube wall thickness, but it is not intended for tubes significantly larger or smaller than the specified diameter. For non‑standard tube sizes, Globe Scientific offers alternative cap dimensions.

Is the cap suitable for sterile applications?

Yes. The smooth interior surface of the cap minimizes the risk of microbial adhesion, and the material can be sterilized using standard methods such as autoclaving or gamma irradiation without loss of structural integrity. For applications requiring aseptic conditions, caps should be stored in a clean, dry environment and sealed after sterilization to maintain sterility.

How should the caps be stored to maintain optimal performance?

Store the caps in a cool, dry place away from direct sunlight and sources of heat. Keeping them in their original packaging helps protect them from dust and moisture. The recommended storage temperature range is 2 °C to 30 °C, which aligns with typical laboratory storage conditions and preserves the material’s flexibility and sealing properties.

What warranty or after‑sales support does Globe Scientific provide?

Globe Scientific offers a limited warranty that covers manufacturing defects for a period of one year from the date of purchase. If a defect is identified, customers can contact our support team to arrange replacement or refund, subject to verification of the issue. Additionally, our technical support staff is available to answer usage questions, provide compatibility guidance, and assist with any concerns related to product performance.