USABlueBook offers the most popular glass fiber filters by top manufacturers Whatman® and Pall®. For the best value, choose USABlueBook brand filters. They met the same standards as the brand names, but offer substantial cost savings.
Whatman Grade 934-AH glass fiber filters provide fine particle retention superior to any cellulose filter of similar speed. They are specified as a filter for solids testing in Standard Method 2540. Retention size is 1.5 µm.
USABlueBook Grade 934-AH glass fiber filters are the same stock and guaranteed to be identical to name brand 934-AH filters—at a substantial cost savings!
Pall Type A/E and USABlueBook A-E glass fiber filters provide high flow rates, high wet strength and high holding capacities. They are specified as a filter for solids testing in Method 2540. Retention size is 1.0 µm.
USABlueBook TSS grade filters are ideal to measure solids that require drying at temperatures below 200°C. Note: If you are measuring fixed or volatile solids that need to be dried at 550°C, please use 934-AH grade filters, NOT TSS grade filters.