CHEMGLASS CG-4512-04 Vacuum Trap Od Tubes 38MM 250MM 18MM

( Brand: Chemglass ), ( Manufacturer Part Number: CG-4512-04 ), ( Part Type: Vacuum Trap Tube )

Review CHEMGLASS Vacuum Trap 38mm Od 250mm 18mm Side Tubes

The **Chemglass CG-4512-04 Vacuum Trap** is a precision-engineered glassware component designed for high-performance applications in laboratory settings, particularly within vacuum systems, distillation, and solvent recovery processes. Crafted from borosilicate glass (Type 3.3), this trap features a robust and chemically resistant construction, ensuring durability and reliability under rigorous experimental conditions. With an outer diameter (OD) of **38 mm**, the trap seamlessly integrates into standard glassware assemblies, providing a secure and leak-tight connection when paired with compatible joints, such as standard taper (ST) or ground glass fittings. Its **250 mm** length offers ample internal volume for effective trapping of contaminants, moisture, or volatile residues, while the **18 mm** inner diameter of the central tube optimizes flow dynamics, reducing pressure drop and enhancing efficiency during vacuum operations.

The trap s design incorporates a **sidearm outlet** positioned at a strategic angle, facilitating convenient access for condensate or trapped substances without disrupting the main vacuum line. This feature is particularly advantageous in applications requiring periodic maintenance or sample collection. The smooth, polished glass surface minimizes dead zones and promotes even distribution of trapped materials, while the trap s tapered base ensures stability when mounted vertically or horizontally. Constructed to withstand repeated thermal cycling, the CG-4512-04 is ideal for use in systems operating under moderate to high vacuum conditions, making it a versatile addition to laboratories engaged in synthesis, chromatography, or analytical chemistry. Its compatibility with standard vacuum pumps and glassware configurations further underscores its utility as a dependable component in both academic and industrial research environments.

**Pros and Cons of buying a Chemglass CG-4512-04 Vacuum Trap (38mm OD, 250mm Length, 18mm Tube)**

1. **High-Quality Construction** Chemglass is a reputable manufacturer known for producing durable, precision-engineered glassware designed for laboratory use. This vacuum trap is likely built to withstand repeated use and exposure to vacuum conditions without leaking or cracking.

2. **Compatibility with Standard Laboratory Setups** The 38mm outer diameter and 18mm tube size are common dimensions in laboratory glassware, making it easy to integrate with existing vacuum systems, condensers, or other glassware components.

3. **Effective for Trapping Condensables** Designed as a vacuum trap, it is intended to prevent backflow of liquids or contaminants into vacuum lines, protecting pumps and other sensitive equipment. The 250mm length provides sufficient surface area for condensation or trapping of vapors.

4. **Chemical Resistance** Made from borosilicate glass (likely Type 3.3 or similar), it is resistant to most acids, bases, and organic solvents, making it suitable for a wide range of chemical applications.

5. **Easy to Clean and Maintain** Glassware is generally easier to clean than metal or plastic components, and borosilicate glass is resistant to thermal shock, allowing for safe cleaning with solvents or steam.

6. **Long Lifespan** Properly maintained, high-quality glassware can last for years, reducing the need for frequent replacements.

7. **Standardized Design** The dimensions and design follow common laboratory standards, ensuring compatibility with other Chemglass products or third-party accessories.

---

1. **Fragility** Glassware is inherently brittle and can shatter if dropped or subjected to sudden thermal stress (e.g., rapid temperature changes). This requires careful handling and proper storage.

2. **Limited Durability Under Extreme Conditions** While borosilicate glass is durable, it is not indestructible. Prolonged exposure to high vacuums, extreme temperatures, or mechanical stress (e.g., repeated assembly/disassembly) may eventually lead to cracks or leaks.

3. **Requires Proper Assembly and Sealing** The trap must be securely connected to vacuum lines and other glassware using ground joints or rubber septa. Improper sealing can lead to leaks, compromising the vacuum system s performance.

4. **Not Reusable in All Cases** If the trap becomes contaminated with corrosive or hard-to-remove residues (e.g., certain polymers or metals), it may require replacement rather than cleaning.

5. **Cost** High-quality glassware from Chemglass is more expensive than generic or lower-grade alternatives. For one-time or low-budget applications, this may not be cost-effective.

6. **Maintenance Overhead** Regular inspection for cracks, leaks, or residue buildup is necessary to ensure optimal performance. Neglecting maintenance can lead to system failures.

7. **Limited Customization** Unlike metal or plastic traps, glassware cannot be easily modified or repaired if damaged. Replacement may be the only option in case of breakage.

---

The **Chemglass CG-4512-04 vacuum trap** is a reliable and high-quality choice for laboratories requiring durable, chemically resistant, and standard-sized glassware for vacuum applications. Its advantages in terms of compatibility, chemical resistance, and longevity make it ideal for routine use in research, teaching, or industrial settings where precision and safety are critical. However, its fragility and higher cost compared to alternatives mean it is best suited for environments where proper handling and maintenance can be ensured.

If your application involves harsh conditions, frequent handling, or budget constraints, you may want to consider alternatives such as metal or reinforced plastic traps. However, for most standard laboratory uses, this Chemglass trap is a solid investment.

- You need a durable, chemically resistant, and standard-sized trap for routine vacuum applications.

- Your lab can afford the higher initial cost and ensure proper handling and maintenance.

- Compatibility with existing glassware and systems is a priority.

- Your application involves extreme mechanical stress, frequent drops, or conditions where glassware is likely to be damaged.

- You are working on a tight budget and can find equally effective alternatives (e.g., metal or reinforced plastic traps).

- You lack the expertise or resources to properly assemble, clean, and store glassware safely.

For long-term use in a well-maintained laboratory, this trap is highly recommended. Always pair it with appropriate safety measures (e.g., protective gloves, eyewear) and store it securely to prevent breakage.

Details:

If a custom power cord or AC adapter is required for the item, it only included if pictured described above. Includes Chemglass CG-4512-04 Vacuum Trap 38mm OD x 250mm L 18mm Side Tubes as pictured. Photos are of the actual unit for sale. Item was recently removed from working service and is in excellent order.

Privacy: Rest assured your information will not be given, sold, rented or loaned to any third party. Cosmetically in good condition showing minor scuffs / scratches blemishes from previous use. Shipping Details: originates from zip code 95742. Item will come with a 30 Day Warranty.

part #: cg451204 price

• $179.99

specifications plasticwarelabsuppy:

• brand: Chemglass
• mpn: Cg-4512-04
• part type: Vacuum Trap Tube

general plasticwarelabsuppy:

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

offer plasticwarelabsuppy:

• sold: 0
• options: Ship-to-home
• started: June 6, 2026
• availability: In Stock
• quantity: 1

payments plasticwarelabsuppy:

• other
• credit card: Visa
• wallet: Paypal

seller plasticwarelabsuppy:

• # reviews: 44479
• city: Rancho Cordova, California
• rating: 99.9%

returns plasticwarelabsuppy:

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

shipping plasticwarelabsuppy:

• type: Fixed
• service: Standard, Expedited, Overnight
• transit: 5-10 Days
• cost: $0.00
• class: Standard, Expedited, One-day

Chemglass CG-4512-04 Is Similar To:

• 5-neck Chemglass Reaction Vessel Neck Lid Center Side Schott Flange (36.1% 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 (36.1% 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-1319-01 Chemglass Bump Trap Socket Cone (40.7% similar) This is Chemglass part cg here a bump trap for your rotary evaporator. The piece of equipment is clean and undamaged. The top is a standard taper socket, bottom cone...(November 21st, 2018)
• Cg-1320-03 Chemglass Bump Trap Rotary Evaporator Rotovap (32.8% similar) It comes with a 14 day guarantee against being DOA from receipt. Good luck buying. Warranty this item is guaranteed to be as described. Shipping buyer pays for all shipping costs. Orders are shipped to the cardholders billing address. Power cords and adapters are never included unless specifically ...(March 29th, 2019)
• Cg-1320-09 Kontes Chemglass Glass Rotary Evaporator Rotovap Bump Trap Joints (29.6% similar) Chemglass glass 500ML rotary evaporator rooftop bump trap joints condition is used. Shipped with USPS priority mail...(June 9th, 2019)
• Cg-1321-01 Chemglass Rotary Evaporator Modified Bump Trap With Top Outer (34.8% 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 1321-14 Chemglass Rotary Evaporator Bump Trap Modified Top Bottom (32.8% similar) Has 2 small drainage holes at base of inner tube. Rotary evaporator bump trap modified. 24 40 top and bottom joint 500ML...(December 28th, 2018)
• Cg-1840-02 Chemglass Melting Point Tubes Id Cg (30.4% similar) I try to list accurately. Chemglass melting point tubes. Most items I list are from estate sales and what know about them is whats on there tags...(March 28th, 2019)
• Cg 4434 Chemglass Gas Vacuum Manifold Ports Single Bank (43% similar) Chemglass gas vacuum manifold 5 ports single stopcocks not included like cg 4434...(December 28th, 2018)
• Cg-4512-02 Chemglass Vacuum Trap Body Od Inner Tube (54.7% similar) ...(February 7th, 2019)
• Cg-4515-06 Chemglass Vacuum Trap Stopper Only Inner Jt (45% 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)