Whirl-Pack Write-On Whirl-Pak Collection Bags - Box of 100 - C32520N
- ...ce to the stem on the side of the fitting. 2. Open the valve by holding the stem and turning the top portion of the fitting counterclockwise one turn. 3. When the bag is full (approx. 90% capacity), close the valve by holding the stem and turning the top portion of the fitting clockwise until it is finger tight..
- To withdraw the sample using a syringe: 1. Insert the needle into the red septum on the top of the fitting. 2. Withdraw the sample and remove the needle, the septum will reseal itself. (Do not allow the needle to pierce the Tedlar film on the back side of the bag).