Glass Vacuum Filtration Assembly Filter Kit with 300 ml Graduated Funnel

We recently purchased your "Glass Vacuum Filtration Assembly Filter Kit with 300 ml Graduated Funnel" (SKU: B08QD432K3). We successfully filtered around 60L of water (containing microfibres) using a mix of paper and plastic filter (both 10 microns) disks on top of the sand core filter. However, the filtering has slowed and even when pulling clean (pre-filtered) water through an empty mesh it can hold around 40kPa with very little flow.This leads us to beleive the sand core filter has blocked. Is there a way to clean it? How do we ensure this doesn't happen again?Additionally, we were curious what the max pressure the system can deal with?

Dear Customer,

Cleaning: Soak the sand core filter in a mild acid solution, then rinse it thoroughly by inverting it.

Clogging: Sand core filters naturally clog, so it’s important to clean them after each use.

Maximum Pressure: The system can handle up to 10-25 kPa. We recommend using a 60-2000 Pa diaphragm pump and avoid overfilling to prevent back suction.

Thanks,

StonyLab Team

I am looking for a vacuum filter system, such as StonyLab's Glass Vacuum Filtration Assembly Filter Kit with 300 ml Graduated Funnel, with PTFE filters. I would really like a system that uses a 5L flask. Does StonyLab have this system with a 5L flask or bottle? It looks like 47mm filters work with the 2L system. Is that correct?

Dear Customer,

We currently don’t have a 5L flask or bottle system, but we can suggest alternatives. Based on your needs, we recommend the following combination:

• 2-Neck Round Bottom Flask: Link
• Buchner Filtration Funnel (500ml Funnel compatible with 94mm filters): Link
• Bent Inlet Adapter: Link
• Nylon Membrane Filters: Link

Thanks,

StonyLab Team

Hi, can you purchase the 300 ml graduated funnel separately?

Dear Customer,
The item is sold as a kit. We regret that we do not have the funnel available for separate purchase.
Thanks,
StonyLab Team