Titan3 Nylon Syringe Filter 0.2 µm, 30 mm, with Pre-Filter, 100 Pk. ERR# - This item cannot be ordered online. Titan3 Polypropylene Syringe Filter Housings Meet The Requirements of 21 CFR 177.1520. Titan3 Nylon Syringe Filter 0.45 µm, 4 mm, 100 Pk. ERR# -