Our standard stopper, hollow standard ground mouth, is made for laboratory experts seeking airtight sealing, chemical resistance, and achievable repeatable compatibility with a standard glassware joint. Constructed using high-grade borosilicate 3.3 glass, these stoppers provide admirable durability and thermal stability, making them suitable for routine chemical or scientific experimentation. 

Each stopper comes with standard taper ground joint for precise fit with smooth sealing. Hollow design of stoppers allows for quicker thermal adaptation and weight reduction, as compared to solid stoppers. 

Features Of Glass Stopper Hollow

● Material: Using High-purity Boro 3.3 glass guarantees excellent resistance from chemicals and extreme temperatures. 

● Hollow Design: Allows for easier handling, lightweight, and ideal for heat-sensitive applications. 

● Precision Ground Mouth: Ideal for tightly fitting joints to prevent leakage and evaporation. 

● Standard Sizes Available: From 10/19 to 50/42, these sizes match common labware sizes. 

● Clear Transparency: Provides easy visual inspection of sealed contents. 

● OEM Support: Based on your quantity demands, we offer customization. 

● Compared to other glass-bottle stoppers, this product offers better enhanced fit accuracy, better durability under temperature cycling, and cleaner joint performance due to tight grinding tolerance. 

Specification Of Standard Stopper 

Application Of  Standard Stopper hollow Standard ground mouth

● Chemical laboratories: Best used for sealing solutions for flasks and reaction vessels and permits storage containers during synthesis, distillation or solution preparation.

● Scientific Research: To provide a controlled environment devoid of contaminants for sensitive samples and reagents. 

● Educational Labs: For the basic teaching practicals which require precise sealing and primary standard compliance. 

● Pharmaceutical & Food Testing: Elimination of air and moisture exposure while the compounds are stored. 

In scientific or chemical labs, the hollow form is effective in reducing thermal mass and improving safety for volatile or heat labile reagents. 

Why Choose Jiangsu Huida's Lab Glass Stoppers 

Jiangsu Huida is a leading manufacturer of global sourced laboratory glassware (50+ patents, 20+ years of international experience; ISO9001, ISO13485, CE and FDA certifications). We work in a facility of 50 000 ㎡ with a 2000 ㎡ cleaning zone which guarantees that all the manufactured goods undergo rigorous quality control. Over 50 laboratories from Europe and Asia trust us because we combine innovative ideas with reliable supply in bulk. 

FAQ

Q1: What is the benefit of using a Glass Stopper Hollow over a solid stopper? 

A: Hollow stoppers are lighter. They also adapt faster to temperature changes. They are ideal for minimizing heat transfer during sensitive chemical processes. 

Q2: Can this product be used as a glass bottle stopper? 

A: Yes, however, these stoppers ensure the best sealing of the reagents for volatile chemicals stored in standard ground glass neck bottles.

Q3: What is the meaning of “Standard Stopper hollow Standard ground mouth?

A: It refers to the standard joint dimensions (for example, 24/29) that have a hollow format for reduced weight and a precision ground taper designed to seal the labware perfectly.

 We are one of the famous brands. Please be free to buy the quality standard stopper hollow standard ground mouth with professional suppliers in China. The unmatched price and service are offered.