https://www.dhx-protectiveequipment.com/product/disposable-virus-sampling-tube/ Specification: DHX-IA-1-3ml Preservation solution: Guanidine salt inactivated type (IA) Preservation solution capacity: 3ml Number of swabs: 1 Quantity: 50 pcs/box (3ml) Type of use: throat swab Storage conditions: Please store in the environment of 2℃--30℃ Validity period: two years