12MM TEF/RUBBER SEPTUM 1000/PK 12020223 (EA)
https://www.genesapiens.org/shop/rw2-1030-51461-12mm-tef-rubber-septum-1000-pk-12020223-ea-313044
https://www.genesapiens.org/web/image/product.template/313044/image_1920?unique=07fba14
This 12MM is guaranteed a 12MM with the use of 12020223 and directly supplied to your lab by Gentaur's warehouse.
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Shipping: 2-3 Business Days