These heavy wall vials have an internal conical bottom and an outside flat ground bottom. The 3-8mL vials have approximate graduations with subdivisions of 1 mL. Includes 20-400 open top nylon screw cap, size 014 Viton O-ring and 20mm PTFE-faced silicone septum.
100% Satisfaction Guarantee: At Mansion Schools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Schools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.