Nov 02, 2021 · Cheap headspace vials with flat bottom for gas chromatography. – Flat bottom headspace vials, 10ml, 100PK Be the first to review this product. $39.70. SKU: . Overview. Specifications. Vial, crimp top, headspace, clear, certified, flat bottom, 10 mL, 23 x 46 mm, 100/pk. Vial size: 22.75 x 46 mm (20 mm cap