Microfiber Filter, Grade 934-AH RTU, 35 mm dia, Borosilicate Glass

Our ready-to-use (RTU), Grade 934-AH RTU Whatman™ Glass Microfiber Filter Papers are the time-saving version of Cytiva's 934-AH glass microfiber filter papers, which are widely used for total suspended solids analysis. 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 also have fine particle retention of 1.5 µm at high flow rates to process heavy, turbid samples.

Diameter	:	35 mm
Grade	:	Grade 934-AH RTU
Material	:	Borosilicate Glass
Binder Type	:	Binder
Maximum Temperature	:	550°C
Nominal Air Flow Rate	:	3.7 sec/100 ml/in2
Nominal Basis Weight	:	64 g/m2
Particle Retention in Liquid	:	1.5 µm
Shape	:	Circle
Thickness	:	435 µm
Typical Water Flow Rate	:	341 ml/min
Wet Burst Pressure	:	17"/Water
Filtration Speed	:	47 secs (Herzberg)

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 DRTU for volatiles - Pre-washed, pre-weighed and pre-fired at 550°C aligned to US EPA laboratory standard method 2540 parts C, D, and ERTU double weigh - Drying, cooling and weighing steps repeated twice for customers with the highest regulatory concernEconomy versions of 934-AH RTU dissolved, suspended and volatiles testing filters also availableThese filters are pre-washed and dried but not weighed and do not come with barcodes