DWK Wheaton 20 ml clear glass headspace vials, screw thread, 22 x 46 mm, 100 pc/PAK

Please note that this product is "made to order". Therefore an order cannot be canceled or returned even if delivery times are longer! Precision made screw thread headspace vials offered with matching closures ensures reliable and robust performance. Where indicated, Certified Class 10,000 clean room packed enhances data integrity.