Our Whatman glass microfiber filter papers in grade 934-AH RTU have been pre-washed, dried (or ignited), cooled, desiccated and weighed, which eliminates the pre-treating steps that are otherwise required by the US EPA Laboratory Standard Method 2540 parts C, D, and E. These glass microfiber filter papers have fine particle retention of 1.5 µm at high flow rates to process heavy, turbid samples.

Our Whatman filter papers 934-AH family of products come in three different varieties:

  • 934-AH RTU for Suspended and Dissolved Solids—pre-washed, dried, cooled, and weighed filters with certified mass loss between washing and drying steps of the lesser of less than 0.5 mg or 4% in accordance with US EPA Lab Standard Method 2540 parts C and D. (Most filters come weighed to four decimal places, however a version of the 47 mm glass microfiber filter can be measured to five decimal places if needed.)
  • Ready-to-use for Volatiles—pre-washed, pre-weighed and pre-fired at 550°C aligned to US EPA Laboratory Standard Method 2540 parts C, D, and E.
  • RTU Double Weigh—drying, cooling and filter paper weighing steps repeated twice for customers with the highest regulatory concern.
  • Economy versions of 934-AH RTU dissolved, suspended, and volatiles testing filters are also available. These filter papers are pre-washed and dried but not weighed and do not come with barcodes.

The pre-weighed glass microfiber filter papers are packaged with a barcoded aluminium pan noting the filter paper weight. The barcode from this pan can be used to find documentation of the filter weight on the Cytiva website. Each box of 934-AH RTU filter papers also has a barcode that can be used to download the weights of all filter papers from that box.

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Product Product Name Price
2827-047 934-AH, pre-rinsed and dried, 47mm, 100/pk 47 mm 2827-047 On Request Get Quote
3827-035 934-AH RTU for volatile, pre-weighed, 35mm, 100/pk 35 mm 3827-035 92.25 USD Add to cart Get Quote

In Stock Stock on request Limited stock

3827-042 934-AH RTU for volatile, pre-weighed, 42.5mm, 100/pk 42 mm 3827-042 92.25 USD Add to cart Get Quote

In Stock Stock on request Limited stock

3827-047 934-AH RTU for volatile, pre-weighed, 47mm, 100/pk 47 mm 3827-047 103.83 USD Add to cart Get Quote

In Stock Stock on request Limited stock

3827-070 934-AH RTU for volatile, pre-weighed, 70mm, 100/pk 70 mm 3827-070 132.90 USD Add to cart Get Quote

In Stock Stock on request Limited stock

3827-090 934-AH RTU for volatile, pre-weighed, 90mm, 100/pk 90 mm 3827-090 154.79 USD Add to cart Get Quote

In Stock Stock on request Limited stock

4827-035 934-AH for volatile, pre-rinsed and ignited, 35mm, 100/pk 35 mm 4827-035 75.04 USD Add to cart Get Quote

In Stock Stock on request Limited stock

4827-042 934-AH for volatile, pre-rinsed and ignited, 42.5mm, 100/pk 42 mm 4827-042 78.18 USD Add to cart Get Quote

In Stock Stock on request Limited stock

4827-047 934-AH for volatile, pre-rinsed and ignited, 47mm, 100/pk 47 mm 4827-047 95.91 USD Add to cart Get Quote

In Stock Stock on request Limited stock

4827-070 934-AH for volatile, pre-rinsed and ignited, 70mm, 100/pk 70 mm 4827-070 125.08 USD Add to cart Get Quote

In Stock Stock on request Limited stock

4827-090 934-AH for volatile, pre-rinsed and ignited, 90mm, 100/pk 90 mm 4827-090 137.59 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-042 Grade 934-AH RTU Filter for Total Suspended Solids Analysis, 42.5 mm (100 pcs) 42.5 mm 9907-042 113.17 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-047 Grade 934-AH RTU Filter for Total Suspended Solids Analysis, 47 mm (100 pcs) 47 mm 9907-047 94.32 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-055 Grade 934-AH RTU Filter for Total Suspended Solids Analysis, 55 mm (100 pcs) 55 mm 9907-055 104.30 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-070 934-AH RTU for solids, 70mm, 100/pk 70 mm 9907-070 131.54 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-090 Grade 934-AH RTU Filter for Total Suspended Solids Analysis, 90 mm (100 pcs) 90 mm 9907-090 146.46 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9907-9436 Grade 934-AH RTU Filter for Total Suspended Solids Analysis, 5 decimal places, 47 mm (100 pcs) 47 mm 9907-9436 138.77 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9927-047 934-AH RTU for solids, double weigh, 47mm, 100/PK 47 mm 9927-047 153.23 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9927-070 934-AH RTU for solids, double weigh, 70mm, 100/ pk 70 mm 9927-070 185.01 USD Add to cart Get Quote

In Stock Stock on request Limited stock

9927-090 934-AH RTU for solids, double weigh, 90mm, 100/PK 90 mm 9927-090 200.00 USD Add to cart Get Quote

In Stock Stock on request Limited stock

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