National Scientific Inserts for 15x45mm Vials
Have a nominal O.D. of 6 or 8mm to fit 15 x 45 4mL vials
$11.15
* Polyspring inserts feature a polyethylene spring to center the bottom of the insert and to provide a cushion against needle contact
* Precision point inserts permit maximum sample extraction
* Use metal spring with inserts that lack the Polyspring
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