DURAN DWK 1129821 Glass Hplc Bottles Cap Retrace 500ML 2/PK GL-45 4-PORT

( Brand: Duran Dwk ), ( Manufacturer Part Number: 1129821 ), ( Model: 500ML GL45 4-PORT ), ( Part Type: Cap ), ( Intended Use/discipline: Biological Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory, Dental Laboratory ), ( Country Of Origin: Germany ), ( Unit Type: Unit ), ( Material: Borosilicate Glass, Polypropylene ), ( Additional Search Terms: Surplus Laboratory Bench Supplies Consumables )

Review DURAN DWK New 2/pk Glass Hplc Bottles 4-port Cap Retrace

The **Duran DWK 1129821 2/PK 500ml Glass HPLC Bottles with GL-45 4-Port Retrace Caps** represent a premium solution for laboratories requiring high-performance liquid chromatography (HPLC) applications with uncompromising precision, durability, and compatibility. Engineered from **borosilicate glass Type I (Duran 50)**, these bottles are renowned for their exceptional chemical resistance, thermal stability, and optical clarity, making them ideal for demanding analytical workflows where accuracy and reliability are paramount. Each bottle features a **500ml capacity**, providing ample volume for sample preparation, solvent storage, or reagent dilution without sacrificing efficiency. The **GL-45 4-port retrace cap** is a standout feature, offering a secure, leak-proof seal that minimizes contamination risks while allowing for easy access to the bottle s contents. This innovative cap design includes a **retrace mechanism**, ensuring a consistent and repeatable seal every time, which is critical for maintaining sample integrity in automated or high-throughput systems. The caps are also equipped with **PTFE-lined septa**, enhancing compatibility with a wide range of solvents, including polar and non-polar compounds, while reducing the risk of adsorption or degradation of sensitive analytes. The **two-pack presentation** not only optimizes storage efficiency but also aligns with standard laboratory practices for batch processing and parallel sample handling. Whether used for mobile phase storage, standard preparation, or waste collection in HPLC systems, these bottles deliver the robustness and performance expected in modern analytical laboratories. Their compatibility with standard HPLC accessories, such as connectors and tubing, ensures seamless integration into existing workflows, while their durability reduces the need for frequent replacements, contributing to long-term cost savings. For researchers and technicians who demand excellence in liquid chromatography, the Duran DWK 1129821 bottles are an indispensable choice combining scientific precision with practical convenience.

### **Pros and Cons of Buying Duran DWK 1129821 (2/PK, 500ml Glass HPLC Bottles with GL-45 4-Port Cap and Retrace Feature)**

1. **High-Quality Glass Construction** Duran glass is known for its chemical resistance, durability, and compatibility with a wide range of solvents and reagents, making it ideal for HPLC applications where contamination must be minimized.

2. **GL-45 Standard Compliance** The GL-45 threaded cap is a widely accepted standard in laboratory glassware, ensuring compatibility with most HPLC systems, fittings, and accessories. This reduces the need for additional adapters or modifications.

3. **4-Port Cap Design** The four-port cap allows for multiple connections, such as sample introduction, venting, or pressure monitoring, enhancing flexibility in experimental setups. This is particularly useful in automated or high-throughput HPLC systems.

4. **Retrace Feature** The retrace cap design helps prevent leaks and contamination by ensuring a secure seal. This feature is critical in HPLC applications where sample integrity must be maintained over extended periods or during high-pressure operations.

5. **Compatibility with HPLC Systems** These bottles are specifically designed for HPLC use, meaning they can withstand the pressures and chemical environments typical in high-performance liquid chromatography without degrading or leaking.

6. **Durability and Longevity** Duran glass is resistant to thermal shock and chemical corrosion, making these bottles suitable for repeated use and long-term storage of HPLC mobile phases or samples.

7. **Easy Cleaning and Sterilization** The smooth glass surface and lack of crevices make these bottles easy to clean, autoclave, or sterilize, which is essential for maintaining sterile conditions in analytical laboratories.

8. **Brand Reputation** DWK Life Sciences (Duran) is a trusted manufacturer of laboratory glassware, ensuring consistent quality and reliability in their products.

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1. **Cost** High-quality glass bottles like these are more expensive than plastic or lower-grade glass alternatives. For laboratories with tight budgets, this may be a significant drawback, especially when purchasing in bulk.

2. **Fragility** While Duran glass is durable, it is still prone to breakage if mishandled, especially during transportation or accidental drops. This can lead to additional costs if bottles are damaged before use.

3. **Weight** Glass bottles are heavier than plastic alternatives, which can make handling and storage more cumbersome, particularly in large quantities.

4. **Limited Reusability in Some Cases** Depending on the chemicals used, residual contamination from previous samples or solvents may require extensive cleaning or replacement of the bottle, reducing its effective lifespan.

5. **Specialized Fittings** While the GL-45 standard is common, some older or non-standard HPLC setups might require additional adapters, adding to the initial setup cost.

6. **Not Ideal for High-Temperature Applications** Although Duran glass is heat-resistant, it is not designed for extreme high-temperature processes (e.g., above 300 C), which may limit its use in certain thermal processing steps.

7. **Single-Use Considerations** In some highly regulated or sterile environments (e.g., pharmaceutical or biotech labs), single-use plastic bottles may be preferred to eliminate cross-contamination risks, even if they are less durable.

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The **Duran DWK 1129821 (500ml HPLC bottles with GL-45 4-port retrace cap)** is an excellent choice for laboratories requiring high-performance, chemically resistant, and reliable glassware for HPLC applications. Its compliance with industry standards, durability, and flexibility make it a valuable investment for long-term use. However, the higher cost, fragility, and weight may pose challenges for smaller labs or those with limited budgets. If budget is not a constraint and the application demands chemical resistance and compatibility with HPLC systems, these bottles are highly recommended.

- **Buy if:** You require a durable, chemically resistant, and standard-compliant glass bottle for HPLC use, and your lab can justify the cost. Ideal for pharmaceutical, analytical chemistry, or biotech laboratories where sample integrity and system compatibility are critical.

- **Consider alternatives if:** Your lab operates on a tight budget, handles highly fragile samples, or requires single-use bottles for contamination control. In such cases, evaluate lower-cost glass options or plastic alternatives (though with trade-offs in durability and chemical resistance).

- **Best for:** High-throughput, automated, or precision-driven HPLC applications where reliability and sealing performance are non-negotiable.

Details:

BIOTECH BARGAINS item for sale. New, pack of 2 bottles with 4-port caps. GSR veers 1730 GS 9.9.4 1730 Has retrace code on bottle surface.

part #: 1129821 prices

• $199.99-$259.00

specifications plasticwarelabsuppy:

• brand: Duran Dwk
• mpn: 1129821
• model: 500ml Gl45 4-port
• part type: Cap
• intended use/discipline: Biological Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory, Dental Laboratory
• country of origin: Germany
• unit type: Unit
• material: Borosilicate Glass, Polypropylene
• additional search terms: Surplus Laboratory Bench Supplies Consumables

payments plasticwarelabsuppy:

• wallet: Apple-pay
• other
• credit card: Visa

seller plasticwarelabsuppy:

• city: Bristol, Connecticut
• # reviews: 11112
• rating: 99.8%

returns plasticwarelabsuppy:

• policy: Returns Accepted
• paid by: Seller
• method: Money back
• time: 30 Days

offer plasticwarelabsuppy:

• started: February 3, 2026
• quantity: 1
• availability: In Stock
• sold: 0
• options: Ship-to-home

general plasticwarelabsuppy:

• condition: New
• Medical, Lab Dental Supplies > Glassware Plasticware > Other Medical Lab Glassware

shipping plasticwarelabsuppy:

• service: Standard, FedEx 2Day, FedEx Standard Overnight
• cost: $0.00
• class: Standard, Expedited, One-day
• carrier: FedEx
• transit: 3-7 Days
• type: Fixed

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