Quartz Microfiber Filter Paper - 3600-1420 - Grade 360, 14.20cm Grey which is then acid-washed using

which is then acid-washed using IN HNO3

Grade 151 is used in combination with Grade 141 as a highly efficient protective and retentive pre-filter to extend the loading capacity of membrane filters

Ahlstrom-Munksjö 151

Also available in pre-washed and pre-weighed format (4

Grade 161 for Microwave Sample Pads

Quartz Microfiber Filter Paper - 3600-1420 - Grade 360, 14.20cm Grey which is then acid-washed usingGrade MK 360 100% High Purity Quartz Filter This 100% quartz microfiber filter is available for applications requiring extremely low levels of trace elements or media that can withstand temperatures between 500 C and 900 C. Also available in thimble form for air sampling. Quartz thimbles are used for emission testing in high temperature environments. They can also be used for testing acidic gases which are not compatible with micro glass fiber