Micro sampling vials and closures for smaller sample sizes up to 2mL. More. 1 – 30of129 Results. 1. Aijiren Techbrand™ Glass Screw Neck Specimen Bottles. Suitable for media, diagnostic, storage, display and sample collection applications. Aijiren Techbrand™ Glass Screw Neck Specimen Bottles are manufactured from clear Type 1B neutral glass. 2.