Import 5mm Vial Inserts — Buy in Bulk from Supplier in China

These 5mm vial inserts are precision laboratory components offered in two configurations: 5x31.5mm and 5x28.5mm, both featuring clear glass construction with a flat or conical base. The conical base variant includes a polyspring, which enhances sample retention and reduces evaporation during storage or analysis. The inserts are designed for compatibility with standard autosampler vials used in chromatography and mass spectrometry applications.

The material is borosilicate glass, a standard choice for laboratory consumables due to its chemical resistance and thermal stability. Typical industry specifications for such inserts include a wall thickness of 0.5 to 1.0mm, a tolerable base flatness deviation of ±0.2mm, and a maximum working temperature of 500°C. These inserts are commonly used in analytical workflows where sample volume is limited, such as in LC-MS or GC-MS systems, where they help minimize carryover and improve sensitivity.

Primary buyers include pharmaceutical laboratories, environmental testing facilities, and research institutions that require consistent, contamination-free sample handling. The supplier accepts small orders and offers OEM packaging, with standard packing consisting of PP trays lined with plastic film and a cover plate, all housed in a carton. Buyers should confirm compatibility with their specific autosampler models, as dimensional tolerances can vary between manufacturers.

Hangzhou Alllabware Scientific Co., Ltd. operates from No.168, Huayuangang Road in Hangzhou, Zhejiang Province, China. The company specializes in laboratory glassware and consumables, catering to analytical and research markets. Its imported tier classification indicates a focus on supplying products that meet international standards, though its current trust signals, such as response rate and average response time, are not yet established.

The supplier’s profile highlights flexibility in order sizes, including small orders and OEM requests, which suggests an ability to accommodate varied buyer needs. While the company does not provide verifiable details on certifications or production scale, its willingness to offer free samples and prompt delivery may appeal to buyers testing new suppliers. Verification of quality control processes and production capacity should be a priority for potential importers.