20mL Clear Glass Presealed Vials   QUANTITY: 25      Listing Details:  25 unbranded heat resistant clear glass scientific vials/reaction vials  20mm neck opening requiring a crimp top closure Presealed vials will be sterile and sealed with a rubber stopper and tamper evident plastic closure that flips off.   Once plastic cap is flipped off, it can not be reattached Glassware is compatible with simple 20mm aluminum seals as well as plastic flip off caps "unsealed" with rubber stopper in place and colored cap closures that flip off (in bag) available.  This requires the buyer to have a 20mm flip top crimping tool at their location to seal. for listing with simple silver aluminum seal: https://www.ebay.com/itm/176168386348     Cleaning process:     Our glass is hand cleaned and inspected for quality. (*does not apply to OPEN glass listings) Glass is hand cleaned and inspected for defects Machine High Temperature Washed exposed to High Temperature dry heat  ***Please let us know if any glassware does not meet your expectations and we will gladly address any issues.*** Preparation & Shipping time:     We ship within 1-2 days per our Ebay listings, but try to ship same day whenever possible.     Our goal is to same day ship orders of 50 pieces or less same day for orders received by noon EST.     We ship EST by 2pm, and all orders received within a reasonable time before our daily ship will be sent as soon as possible.     Shipping is M-F excluding all US holidays.      ***Please contact with any special requests***