We spoke to someone at Millipore, and found out that they don't have anything that would suit our design, as all of their filters only work in one direction.
We called Whatman, and the lady there said that their inline filters would probably do what we need. They don't have anything that screws on, but there are two nozzle attachments. The only thing she was unsure of is whether the filter would degrade over the time span we need them for. She said she thinks they are not designed for multiple uses, but is not very familiar with them so will look into it and get back to us on Monday.
We spoke to Mira Plastics who specialize in ultrasonic welding about attaching the nylon filter to the plastic container and they told us that they have a problem with this because the filter isn't a rigid material. They suggested we talk to Dupont because they might have some idea how to do it.
We talked to Dupont and they told us they weren't sure how to attach those 2 materials together either but they thought that GW Plastics should know how to do this.
We called GW Plastics and they said that they could attach a filter to a container but that they would need us to work with their project designers on it.
We contacted Strainrite again about the filter samples that they would send us and the regional manager said that he had already sent the samples and that they should be on their way.
As a backup plan for the filters, we spoke to Global Filter but they said they only have industrial sized filters. We also looked into several other filter companies and discovered that they also only sell industrial sized versions–far too big for our purposes.
