VWR 89000-362 Glass Erlenmeyer Mouth Flask Pack 250

( Brand: Vwr ), ( Manufacturer Part Number: 89000-362 ), ( Country Of Origin: United States ), ( Intended Use/discipline: Biological Laboratory, Microbiological Laboratory )

Review VWR 250 Ml Glass Erlenmeyer Narrow Mouth Flask Pack New

The **VWR 89000-362 250 mL Glass Erlenmeyer Flask with Ground Glass Mouth, 12-Pack** is a high-quality, precision-engineered laboratory glassware essential for a wide range of chemical, biological, and analytical applications. Crafted from borosilicate glass (typically Type I or II, though exact specifications may vary by manufacturer), these flasks are designed to withstand extreme temperature fluctuations, thermal shock, and harsh chemical environments, ensuring durability and reliability in demanding laboratory settings. The **250 mL capacity** strikes an ideal balance between utility and space efficiency, making them suitable for medium-scale reactions, titrations, heating, stirring, or as storage vessels for liquids and suspensions. The **ground glass mouth** provides a secure, leak-proof seal when paired with a matching stopper (sold separately), reducing evaporation and contamination risks while facilitating easy access for sampling or reagent additions. The flasks feature a **standard taper (ST) joint**, adhering to ISO and ASTM specifications, ensuring compatibility with a broad range of laboratory glassware accessories, including condensers, funnels, and adapters. Their **clear, transparent walls** allow for precise visual monitoring of reactions, color changes, or precipitation formation, while the **smooth, polished interior** minimizes adsorption of samples, preserving accuracy in measurements and experiments. The **12-pack format** offers cost-effective scalability for laboratories, research teams, or educational institutions requiring multiple units for parallel experiments or routine procedures. Whether used in general chemistry, microbiology, pharmaceutical development, or educational demonstrations, these flasks exemplify precision, versatility, and robustness, making them a cornerstone of any well-equipped laboratory. Proper care such as hand washing with mild detergents and avoiding abrasive scrubbers will extend their service life, ensuring consistent performance for countless experiments.

### **Pros and Cons of buying a VWR 89000-362 250 mL Glass Erlenmeyer Mouth Flask (12-Pack)**

1. **Durability and Quality** VWR is a well-known brand in laboratory equipment, known for producing high-quality, chemically resistant borosilicate glass. The 89000 series is designed for durability, making it suitable for repeated use in various laboratory applications.

2. **Standardized Sizing** The 250 mL size is a common volume in laboratory settings, ensuring compatibility with most lab procedures, including titration, mixing, and heating.

3. **Erlenmeyer Mouth Design** The flared mouth provides better pouring control and reduces spillage compared to round-bottom flasks, making it safer for handling liquids.

4. **Chemical Resistance** Borosilicate glass (typically Type I or II) resists most acids, bases, and organic solvents, making it ideal for general laboratory use.

5. **Convenience of Bulk Purchase** The 12-pack offers cost savings per unit compared to buying individual flasks, which is beneficial for labs with frequent needs.

6. **Compatibility with Labware** The design is compatible with standard laboratory glassware accessories, such as rubber stoppers, clamps, and heating mantles.

7. **Sterilization-Friendly** Glass can be easily autoclaved or cleaned with harsh detergents, making it suitable for microbiological and analytical work.

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1. **Fragility Compared to Plastic** While borosilicate glass is durable, it is still more fragile than plastic alternatives (e.g., polypropylene). Dropping or mishandling can lead to breakage.

2. **Weight** Glass flasks are heavier than plastic or disposable versions, which can be cumbersome for frequent handling or transport.

3. **Cost** Although the 12-pack offers a discount, borosilicate glass flasks are generally more expensive than disposable or lower-grade plastic alternatives.

4. **Maintenance Requirements** Glassware must be cleaned thoroughly to prevent residue buildup, which can affect experimental accuracy. Scratches or pitting from improper cleaning can also weaken the glass over time.

5. **Limited Temperature Resistance (Compared to Specialty Glass)** While borosilicate glass can withstand moderate heating, it is not as heat-resistant as fused silica or certain high-temperature borosilicate grades (e.g., VWR s 89000-362 may not handle extreme temperatures like 500 C without risk of stress cracking).

6. **Potential for Contamination** If not properly cleaned or stored, glassware can harbor microbial growth or chemical residues, which may interfere with experiments.

7. **Single-Use Alternatives Exist** For disposable applications (e.g., one-time experiments), plastic or polypropylene flasks may be more convenient, though they lack the durability and chemical resistance of glass.

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### **Conclusion**

The **VWR 89000-362 250 mL borosilicate glass Erlenmeyer flasks (12-pack)** are an excellent choice for laboratories requiring **durable, chemically resistant, and standardized glassware**. They are ideal for routine procedures where longevity and precision are critical. However, they may not be the best option for applications involving **extreme temperatures, frequent handling, or disposable needs**, where plastic alternatives could be more practical.

### **Recommendation**

- You need **high-quality, reusable glassware** for general laboratory use (e.g., titrations, mixing, heating).

- You prioritize **chemical resistance, durability, and compatibility with standard lab equipment**.

- You are purchasing in bulk to **reduce per-unit cost** and ensure consistency in your lab s glassware.

- You require **disposable or lightweight flasks** (e.g., for fieldwork or one-time experiments).

- Your work involves **extreme temperatures or high-pressure conditions**, where specialty glass (e.g., fused silica) may be necessary.

- Budget constraints make plastic or lower-cost glass options more feasible.

For most standard laboratory settings, this VWR product is a **reliable and cost-effective choice** when durability and chemical resistance are priorities.

Details:

VWR 250 ml Glass Erlenmeyer Narrow Mouth Flask 89000-362 12 PACK NEW.

part #: 89000362 prices

• $5.99-$39.95

specifications plasticwarelabsuppy:

• brand: Vwr
• mpn: 89000-362
• country of origin: United States
• intended use/discipline: Biological Laboratory, Microbiological Laboratory

seller plasticwarelabsuppy:

• rating: 99.3%
• city: Wilmington,
• # reviews: 1152

offer plasticwarelabsuppy:

• sold: 0
• availability: In Stock
• quantity: 2
• options: Ship-to-home
• started: March 17, 2026

shipping plasticwarelabsuppy:

• class: Standard
• transit: 3-8 Days
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• cost: $20.99

general plasticwarelabsuppy:

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

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• policy: No Returns

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