You’ll be always easily access to our service and products we provided and offer the best.

Small order

Flexible handing your Request especially for initial one.

Learn more

Free sample

Free Sample could be checked before placing bulk order.

Learn more

7/24 Team

Our sales team could be reached 7/24 access to your needs.

Learn more


As soon as you have ideas of new design, our team ready to make your ones to reality.

Learn more


We have abundant products and competitive price to support your sales.

Learn more


Ready stocks for most top rated items and they are ready to send to your hand directly.

Learn more

Autosampler Vials for HPLC, GC and MS

Mastelf Autosampler Vials made from borosilicate glass meet ASTM Type I Class A and USP Type I standards.

  • Makes your laboratory more efficient by reducing costs and saving time

  • Perfect fit Agilent, Waters, Varian and Shimadzu Instruments.

Headspace Screw & Crimp Vials

These beveled neck Screw & Crimp vials are available in both 6mL, 10 mL and 20 mL capacities, flat or rounded bottom.

  • Mastelf headspace vials are manufactured to provide uniform glass thickness

  • Mastelf vials perfect meet or exceed OEM instrument manufactures’ specification.

EPA Storage Vials

With four vial capacities available in clear or amber glass, Mastelf vials are ideal for sampling or storage uses.

  • Teflon-lined storage caps offer broad chemical resistance –the ultimate in glass closures

  • The polypropylene screw caps with PTFE/silicone septa are extra clean to eliminate sample contamination.

Syringe Filter

Mastelf syringe filters have been widely applied to HPLC sample preparation, routine QC analysis, dissolution testing, food analysis, biofuel analysis and environmental samples.

  • PVDF, PTFE, MCE, NYLON, PES etc. available

  • Mastelf provides high quality syringe filters, well packed and offered at a fair and competitive price.

GL45 Bottle, Test & Centrifuge Tube etc.

Mastelf will be constantly investigate and research market to decide develope new products. These will be our on-gong project each year.

  • Provides kinds of common type micro centrifuge and centrifuge tube.

  • New products are also led to new market challenge and opportunity for our customers. We are more than happy to help find something new and help your sales next year.


  • Quality assurance

  • Favorable price

  • Free sample available

  • OEM, ODM available

  • Flexible shipping method by air or sea

  • 7/24 team support access to your needs.

  • Certificate offered

  • Flexible payment term

  • Custom packing offered

  • Flexible MOQ

Our team are ready to help you

Tell us your needs. Join us today to ask for non-obligation quote. Cick below to contact us now.

Get Started