Minispike Acrodisc 13mm Syringe Filter 0.45um pore size. Hydrophilic nylon membrane. Ester base alcohol compatible. No prewetting. HPLC certified for low UV-absorbing extractables. Polypropylene housing has female Luer-Lok inlet and minispike outlet. \<14uL hold-up volume. 100/pk 300/cs.