CHEMGLASS CG-1742-02 Outer Stopper Neck Squibb Separatory 60ML 801234180540 2X Funnel

( Brand: Chemglass ), ( Manufacturer Part Number: CG-1742-02 ), ( Model: 60ML 16 ), ( Part Type: Stopper ), ( Product: Separatory Funnel ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory ), ( Unit Type: Unit ), ( UPC: 801234180540 )

Review CHEMGLASS 2x #16 Outer Stopper Neck Squibb Separatory Funnel

The **Chemglass CG-1742-02 2 60 mL 16 Outer Stopper Neck Squibb Separatory Funnel** is a precision-engineered laboratory tool designed for efficient and reliable liquid-liquid extractions, offering a robust solution for chemists and researchers working with moderate-scale separations. Constructed from high-quality borosilicate glass (Type 1, meeting or exceeding USP/EP/JP standards), this separatory funnel is built to withstand the rigors of routine laboratory use while maintaining chemical resistance and optical clarity. Its dual-chamber design, featuring two 60 mL compartments, allows for parallel processing of two separate extraction steps simultaneously, significantly enhancing workflow efficiency without compromising accuracy. The **16 outer stopper neck** configuration ensures a secure, leak-proof seal when closed, preventing cross-contamination and minimizing solvent loss during agitation or settling. The ergonomic, tapered neck facilitates easy pouring and transfer of organic or aqueous phases, while the reinforced base provides stability during vigorous shaking or centrifugation. Ideal for applications in organic synthesis, pharmaceutical development, environmental analysis, and biochemical research, this separatory funnel is compatible with a wide range of solvents, including polar and nonpolar liquids, as well as corrosive reagents. Its durable construction, combined with the precision-ground glass joints, ensures consistent performance across diverse extraction protocols, from simple solvent partitioning to complex multi-step purifications. Whether used in academic laboratories, industrial R&D facilities, or clinical settings, the CG-1742-02 delivers reliability, versatility, and ease of use, making it an indispensable asset for any chemist seeking high-performance liquid-liquid separation.

**Pros and Cons of buying a Chemglass CG-1742-02 (2x 60 mL, 16/20 Outer Stopper Neck, Squibb Separatory Funnel)**

1. **Durability and Quality** Chemglass is a reputable manufacturer known for producing high-quality glassware designed for laboratory use. The separatory funnel is built to withstand repeated use, chemical exposure, and pressure from separations, making it a long-term investment.

2. **Standardized Dimensions** The 60 mL capacity and 16/20 outer stopper neck are common sizes in laboratory settings, ensuring compatibility with standard adapters, clamps, and other glassware. This makes it easy to integrate into existing lab setups.

3. **Efficient Separation Functionality** The Squibb design (a type of separatory funnel) is optimized for liquid-liquid extractions, allowing for effective separation of immiscible phases (e.g., organic and aqueous layers). The stopcock and stopper provide precise control over flow and mixing.

4. **Chemical Resistance** Made from borosilicate glass (likely Type I or II), the funnel is resistant to most acids, bases, and organic solvents, making it suitable for a wide range of chemical procedures.

5. **Versatility** The dual-chamber design (2x 60 mL) allows for larger-scale separations compared to single-funnel models, which can be useful for teaching demonstrations or small-scale syntheses.

6. **Compatibility with Accessories** The 16/20 joint fits standard laboratory adapters, clamps, and funnels, reducing the need for additional hardware. It can also be used with a separatory funnel stand or clamp for stability.

7. **Cost-Effective for Bulk Use** While individual separatory funnels can be expensive, purchasing a set (e.g., two funnels) may offer better value, especially for labs or students who perform frequent extractions.

8. **Easy to Clean and Maintain** Borosilicate glass is non-porous and resistant to staining, making it straightforward to clean with detergents, solvents, or even mild acid washes. It does not absorb residues like plastic would.

9. **Safety** Glass is inert and does not leach contaminants into samples, which is critical for analytical or preparative chemistry where purity is essential.

10. **Educational Value** For academic or teaching labs, this funnel demonstrates fundamental laboratory techniques (e.g., extraction, phase separation) in a durable, hands-on format.

---

1. **Fragility** Glassware is prone to breaking if dropped or subjected to thermal shock (e.g., rapid heating or cooling). This requires careful handling, which can be a drawback in busy or high-traffic labs.

2. **Weight and Bulk** Glass funnels are heavier than plastic alternatives, which can make them cumbersome to transport or store. They also occupy more space on lab shelves.

3. **Limited Reusability in Some Cases** While borosilicate glass is durable, repeated use with abrasive materials or harsh chemicals (e.g., hydrofluoric acid) may eventually degrade the glass over time, necessitating replacement.

4. **Cost** Compared to plastic or disposable separatory funnels, high-quality glassware like this is more expensive upfront. However, the long-term cost per use is often lower due to durability.

5. **Specialized Accessories Needed** While the 16/20 joint is standard, some labs may require additional adapters or clamps, adding to the initial setup cost.

6. **Not Ideal for High-Pressure Applications** Unlike some plastic funnels designed for vacuum filtration, glass separatory funnels are not typically rated for high-pressure operations (e.g., under vacuum).

7. **Learning Curve for Beginners** Novice lab technicians may struggle with proper use (e.g., avoiding air bubbles, controlling the stopcock) compared to simpler plastic alternatives.

8. **Environmental Concerns (If Disposed Improperly)** While borosilicate glass is recyclable, improper disposal (e.g., throwing into regular trash) can be problematic. Labs must follow hazardous waste protocols if the funnel has contained toxic chemicals.

9. **Limited Availability of Replacements** If the funnel breaks, finding an exact replacement (especially for older models) may be difficult, though Chemglass and other suppliers generally carry standard sizes.

10. **Potential for Contamination** If not cleaned thoroughly between uses, residues from previous experiments (e.g., organic solvents, salts) can carry over to new samples, affecting results.

---

The **Chemglass CG-1742-02 separatory funnel** is a high-quality, versatile tool ideal for laboratories requiring durable, chemical-resistant glassware for liquid-liquid extractions. Its standardized dimensions, efficiency, and compatibility with standard lab equipment make it a practical choice for academic, research, or industrial settings where precision and longevity are prioritized. However, its fragility, weight, and higher cost compared to disposable alternatives may make it less suitable for casual or high-volume use where convenience is more important than durability.

- You work in a lab where durability and chemical resistance are critical (e.g., organic synthesis, analytical chemistry, teaching labs).

- You need a standardized 60 mL separatory funnel for routine extractions and have the budget for high-quality glassware.

- You prefer reusable, non-contaminating equipment over disposable options.

- You require a lighter, more portable option (e.g., plastic separatory funnels from brands like Corning or VWR).

- Your lab performs high-volume extractions where cost per use is a major factor (disposable funnels may be more economical).

- You frequently handle very small or very large volumes (e.g., 100 mL), as this size may not be optimal.

- You prioritize ease of use for beginners, as plastic funnels are less prone to breakage and easier to handle.

For most standard laboratory applications, the **Chemglass CG-1742-02 is a strong recommendation** due to its reliability and performance. However, weigh the pros and cons against your specific needs before purchasing.

Details:

The stopcocks are intact and fully functional. There are no visible cracks or chips in the glass. This separatory funnel separates immersible liquids, features a ground glass outer stopper neck and stopcock for controlled dispensing, is essential precise liquid-liquid extractions in laboratory settings. Includes: Two separatory funnels.

Model: 60mL #16 Outer Stopper Neck Squibb Separatory Funnel.

part #: cg174202 prices

• $20.99-$299.99

specifications plasticwarelabsuppy:

• brand: Chemglass
• mpn: Cg-1742-02
• model: 60ml 16
• part type: Stopper
• product: Separatory Funnel
• intended use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory
• unit type: Unit
• upc: 801234180540

offer plasticwarelabsuppy:

• sold: 0
• best offers: True
• started: March 5, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1

seller plasticwarelabsuppy:

• rating: 99.9%
• city: Fairfield, California
• # reviews: 1867

payments plasticwarelabsuppy:

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

returns plasticwarelabsuppy:

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

shipping plasticwarelabsuppy:

• class: Standard, Expedited
• service: UPS Ground, Expedited
• cost: $0.00
• transit: 4-7 Days
• type: Fixed
• carrier: UPS

general plasticwarelabsuppy:

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

Chemglass CG-1742-02 Is Similar To:

• 5-neck Chemglass Reaction Vessel Neck Lid Center Side Schott Flange (39.2% similar) Chemglass reaction vessel 5 neck lid 45 50, 4 sides with 200MM Scott flange no chips, cracks or breaks. They are based on package size, weight and buyers zip code. I have quite a lot of lab chemistry glass available, if you don't see here, just ask and will check my inventory. Glass is clear with no...(November 8th, 2018)
• Cg-1049-j-30 Chemglass Series Vacuum Adapter Outer To Gpi Thread Ptfe Stopcock (33.8% similar) Please for more details the unique design of long stem filter funnel and vacuum adapter makes it unnecessary to clean after each use. Hose connection is 10MM od at the largest serration. The 2MM PDF stopcock between outer joint and standard taper inner permits control of vacuum source...(January 17th, 2019)
• Cg-1321-01 Chemglass Rotary Evaporator Modified Bump Trap With Top Outer (25.7% similar) Traps have a top outer joint and the listed size of lower inner. Chemglass cg rotary evaporator modified bump trap with top outer and lower inner, 100ML capacity inner similar to CG-1320, but the addition of two 4MM drain holes at base tube allow solvent back into evaporation flask...(March 20th, 2019)
• Cg 1714 16 Chemglass Graduated Addition Funnel Ptfe Valve (31.6% similar) Chemglass cg 1714 16250ML graduated pressure-equalizing addition funnel PDF valve top and bottom joints glow 100 INF19...(April 6th, 2019)
• Cg-1759-26 Chemglass 8 Top Eco-funnel (37.2% similar) New in package, great deal...(August 1st, 2017)
• Cg-3000-05 Chemglass Stopper Pennyhead Hollow Of (37.1% similar) 24 40 hollow stoppers...(January 15th, 2019)
• Cg-3000-14 Chemglass Lot Hollow Stopper (33% similar) This lot 5 Chemglass cg hollow stopper appear to be in good cosmetic condition with little no signs of prior use, only storage wear. However, I really lack the knowledge and equipment to test them, so due little testing, they are being sold as-is. No software, power cords, or other accessories are ...(March 7th, 2019)
• Cg-3022-24 Chemglass Rubber Sleeve Type Septum Stopper For Outer (38.6% similar) Sold exactly as is in pics. Brand new 100 count bag...(January 7th, 2019)
• Cg-4515-06 Chemglass Vacuum Trap Stopper Only Inner Jt (40% similar) Chemglass vacuum trap stopper only inner jet cg new - no retail box: two piece construction for easy removal of condensate. Inlet and outlet are apart for installation into a variety of vacuum systems. Stopper has a standard taper inner joint and body an outer. Of 13MM at the smallest serration and ...(November 12th, 2018)
• Chem5000 Chemglass Triple Neck Round Bottom Joint (36.8% similar) ...(August 30th, 2018)
• Eco-funnel Chemglass 8 Top Threaded (28.8% similar) As pictured...(August 19th, 2016)