PYREX 12mL Regular Weighing Bottle 25 x 40mm with External 29-12 Joint

The PYREX 1686-2540 12mL Regular Weighing Bottle is precision laboratory glassware designed for weighing handling drying and temporary storage of small samples. Unlike PYREX weighing bottles with an internal joint-style opening, the 1686 series uses an external ground-glass body. Its hollow glass cap fits over the external joint, which can make sample transfer easier and helps reduce the chance of material contaminating the closure. With an approximate 12mL capacity, 25mm outside diameter × 40mm length, and 29/12 Standard Taper joint, this model is suitable for analytical laboratories quality-control laboratories research facilities and chemical testing applications. Key Features Genuine Corning PYREX® Catalog number 1686-2540 Approximate capacity 12mL 25 × 40mm OD × length Regular / standard-form weighing bottle 29/12 external Standard Taper joint Hollow glass cap-style closure Closure fits over the externally ground body Designed for accurate laboratory sample handling Suitable for analytical and gravimetric procedures Approximate weight 20g 6 bottles per pack 18 bottles per case Specification Details Brand PYREX® Manufacturer Corning Catalog Number / MPN 1686-2540 Series 1686 Product Type Laboratory Weighing Bottle Form Regular / Standard Approx. Capacity 12mL Outside Diameter 25mm Length 40mm Size 25 × 40mm Joint 29/12 Standard Taper Joint Configuration External Closure Hollow Glass Cap-Style Closure Approx. Weight 20g Quantity/Pack 6 Quantity/Case 18