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Amazon.com: Pastein Blue GL45 Polypropylene Screw Cap with Internal Molded Seal Ring for Lab Prex Media Bottles (Case of 12) : Industrial & Scientific
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Ks-Tek 2pcs Blue Vented Screw Cap with 0.22um PTFE Syringe Filter, Liquid Culture Lid,Autoclavable, GL45 Thread: Amazon.com: Industrial & Scientific
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Always in Stock - Spex VapLock™ Solvent Delivery Cap, two 1/4"-28 ports, GL45; 1/ea from Cole-Parmer
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