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Multiple conical micro-inserts with polymer springs for lab use

100 pieces of glass micro-inserts graphic for laboratory supplies

300ul glass conical micro-insert with polymer spring for HPLC vials

Flat bottom glass micro-insert for 2ml autosampler vials

Clear glass conical micro-insert for standard 12x32mm vials

Close-up of polymer spring feet on a 300ul glass conical insert

Close-up of the smooth and burr-free ring opening of a micro-insert

Hand holding an amber vial next to a glass micro-insert

Features & Details

Secure your micro-volume samples with Xin Tester Autosampler Vial Inserts. We design these precision inserts specifically for standard 2ml 9-425 vials.

✅ Material Options: Choose between premium borosilicate glass and medical-grade polypropylene (PP).
🎯 Bottom Shapes: We offer conical, flat, and poly-spring stand bottoms for maximum recovery.
🛡️ Needle Protection: The unique poly-spring stand cushions your autosampler needle perfectly during injection.
📦 Bulk Availability: Keep your lab stocked with our convenient 100-piece to 1000-piece bulk packs.

About this item

Product specification

Xin Tester® Insert Specifications

Material Type	Bottom Shape	Capacity	Dimensions	Pack Size
Plastic (PP)	Round Bottom	300 µl	6 x 29 mm	1000 Pcs
Glass	Conical (Cone)	250 µl		100 Pcs
	Flat Bottom	300 µl
	Poly-Spring Stand	250 µl	6 x 35 mm
Plastic (PP)	Poly-Spring Stand	250 µl	6 x 35 mm	200 Pcs

Professional Autosampler Vial Inserts

Chemists frequently handle extremely small sample volumes. Analyzing these micro-volumes in standard 2ml vials is difficult. Therefore, Xin Tester proudly introduces our premium Autosampler Vial Inserts. We engineer these micro-inserts to reduce the internal volume of your vials. Consequently, you can perform high-performance chromatography without wasting a single drop.

💎

High-Purity Materials

We offer inserts in two premium materials. You can choose USP Type 1 borosilicate glass for maximum chemical inertness. Alternatively, we provide high-transparency polypropylene (PP) for cost-effective daily use. Ultimately, both materials prevent sample contamination perfectly.

🎯

Maximum Sample Recovery

Different tests require different bottom shapes. Therefore, we supply flat bottoms for maximum capacity. Furthermore, our conical bottoms ensure standard micro-sampling success. You can retrieve nearly 100% of your valuable liquids safely.

🛡️

Innovative Poly-Spring Stand

Autosampler needles are delicate and expensive. Consequently, we designed specialized inserts with a poly-spring stand. This integrated polymer spring cushions the needle during the injection process. As a result, it prevents mechanical damage.

⚙️

Universal Compatibility

You need lab consumables that fit your existing equipment. We manufacture these inserts to strict 6x29mm and 6x31mm dimensions. Specifically, they fit all standard 9-425 chromatography vials seamlessly. You can use them with Agilent systems effortlessly.

💡

Tech Insight: Inserts vs. Micro-Vials

Why do professionals prefer inserts over micro-vials? Standard 2ml vials fit perfectly into robotic autosampler racks. Conversely, small micro-vials often require specialized adapters.

By using Autosampler Vial Inserts, you maintain the standard 12x32mm external profile. Meanwhile, you drastically reduce the internal volume for micro-sampling. To explore the academic principles behind advanced chromatography, we highly recommend the peer-reviewed resources on ScienceDirect.

Stock Up on Essential Lab Supplies

Xin Tester provides flexible bulk packaging options. We offer packs ranging from 100 to 1000 pieces. Consequently, we cater to both small research tasks and high-throughput industrial testing.

Do you need matching 9-425 vials and caps?
Browse our complete chromatography collection |
Contact our sales team for bulk pricing

Use Cases

Autoclavable & Sterile Chemical Synthesis High Precision Micro-Volume Analysis

FAQs

Q1: Should I choose glass or plastic (PP) inserts for my tests?

A: We recommend glass inserts for applications requiring strict chemical inertness. They work perfectly with volatile solvents. Conversely, polypropylene (PP) plastic inserts are unbreakable. Therefore, they are excellent for pH-sensitive samples or cost-effective routine testing.

Q2: What is the main advantage of the poly-spring stand bottom?

A: The attached polymer spring acts as a reliable shock absorber. When the autosampler needle descends, the spring cushions the impact. Consequently, it prevents bent needles and ensures the insert remains perfectly upright for accurate aspiration.

Q3: Do these micro-inserts fit inside standard 9-425 HPLC vials?

A: Yes, absolutely. We specifically engineer these Autosampler Vial Inserts with 6x29mm and 6x31mm profiles. As a result, they drop perfectly into standard 2ml, 12x32mm glass vials. You can use them seamlessly with any 9mm wide opening.

Q4: Can I wash and reuse these micro-inserts to save money?

A: You can theoretically clean and sterilize the glass inserts. However, doing so is extremely difficult due to their tiny internal volume. Therefore, we highly recommend treating them as single-use consumables. This prevents cross-contamination in sensitive chromatography analysis.

Xin Tester 250µl/300µl Autosampler Vial Inserts, Glass & Plastic Micro-Inserts (100-1000 Pcs)

Price range: $8.08 through $15.56

Extra 5% Off with code: welcome5

SIZE

Clear

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.