Filter, carbon, 30mm × 30mm,pk 4 Back Catalog number: R-FLTR4 Manufacturer: MARKES INTERNATIONAL LIMITED Availability: In the manufacturer's stock Price on request - + Recommended C-HSPKIT-03 HiSorb Starter Kit (PDMS/DVB, short, inert) Price on request C-DF010E Diffusion caps,alum,etched with serial numb,pk10 Price on request C-CHK10 Check-standard, 90 ng/µL (nominal), Tenax TA,pk10 Price on request