• Penny Head Stoppers with Ground Joint - Amber

Penny Head Stoppers with Ground Joint - Amber

OM-6601-07

  • Lab and Research

Vendor: OMSONS

Suited For: Lab and Research

Country of Origin: India

30-Day Limited Warranty
This product is covered against manufacturing defects in materials and workmanship for 30 days from the date of purchase.

This warranty does not cover: breakage caused by thermal shock (rapid heating or cooling); physical or mechanical damage, including drops, impacts, chips, and cracks from handling; damage from use outside the glassware's rated temperature, pressure, or chemical compatibility; damage from improper cleaning; normal wear such as scratching, staining, or discolouration; or unauthorised repair or modification.

To claim, contact SmartLabs within 30 days of purchase with proof of purchase and a description of the defect.
50 in stock
R 25.18
R 25.18
Tax included. Shipping calculated at checkout.
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Penny head Amber Glass Stoppers are designed to provide a light-protective, vacuum-tight seal for laboratory glassware. They are specifically "amberized" to block UV and short-wavelength visible light (typically 300 nm to 500 nm), preserving the integrity of light-sensitive chemicals. 
 
Technical Specifications
  • Material: High-quality 3.3 Borosilicate Glass with high chemical and thermal resistance.
  • Design:
    • Standard Taper (1:10): Precision-ground to ensure interchangeability with any standard ground glass socket.
    • Drip-Tip: The lower closed end features a pointed tip to ensure adhered liquid returns to the vessel, preventing joint contamination.
    • Head Style: Available in Penny Head (flat circular grip) for volumetric flasks and Flat Head for reagent bottles. 
Available Sizes
 
These stoppers are categorized by their cone size to match specific capacities of volumetric flasks and reagent bottles: 
 
  Cone Size Application / Capacity
  10/19 Volumetric Flask (5, 10, 20, 25 mL)
  12/21 Volumetric Flask (50 mL)
  14/23 Volumetric Flask (100, 200, 250 mL)
  19/26 Reagent Bottle (125 & 250 mL)
  24/29 Reagent Bottle (500 mL)
  29/32 Reagent Bottle (1000 mL)
  34/35 Reagent Bottle (2000 mL)
 
Key Applications
  • Storage of Light-Sensitive Media: Essential for silver nitrate, certain vitamins, dyes, and pharmaceuticals that degrade upon light exposure.
  • Analytical Chemistry: Used in preparing standard solutions where concentration must remain stable over time.

Specifications

  • Material: Amberized 3.3 Borosilicate Glass 
  • Drip-Tip: No
  • Joint Size: Select from drop down
  • Head: Penny Head (flat circular grip)
  • Brand: OMSONS
  • Product of India
Safe Autoclaving Guidelines
To prevent damage to the stopper or the vessel it is paired with, follow these best practices:
  • Loosen the Joint: Never autoclave a stopper that is firmly seated or "greased" in a joint. Thermal expansion can cause the glass to crack or the stopper to become permanently "frozen" in place.
  • Venting: Ensure there is a path for steam to enter and pressure to equalize. It is often recommended to place a thin strip of paper between the ground glass surfaces or to set the stopper loosely on top of the flask.
  • Standard Cycles: They can typically withstand standard autoclave cycles (e.g., 121°C at 15 psi for 15–20 minutes).
  • Avoid Rapid Cooling: Do not move hot glassware directly into a cold environment or water, as even borosilicate glass can fail under extreme, sudden temperature differentials.

Specifications

Material: Borosilicate 3.3 Glass
Taper: Standard Taper 1:10
Light Protection: Blocks 300-500nm

Delivery

We deliver nationwide across South Africa. Once your order is on its way, you'll receive a tracking link by email so you can follow its progress. If you need your order urgently or you're delivering somewhere hard to reach, contact our team before you check out and we'll help where we can.

Warranty

This product is covered against manufacturing defects in materials and workmanship for 30 days from the date of purchase.

This warranty does not cover: breakage caused by thermal shock (rapid heating or cooling); physical or mechanical damage, including drops, impacts, chips, and cracks from handling; damage from use outside the glassware's rated temperature, pressure, or chemical compatibility; damage from improper cleaning; normal wear such as scratching, staining, or discolouration; or unauthorised repair or modification.

To claim, contact SmartLabs within 30 days of purchase with proof of purchase and a description of the defect.

Our Promise

At SmartLabs, we only stock equipment we'd trust in our own labs and classrooms. If a product arrives faulty or doesn't match its description, let us know and we'll make it right, whether that's a replacement or a refund. Our goal is for every order to work exactly as it should, the first time.