WHATMAN 541 HARDENED ASHLESS FILTER PAPER, 42.5mm DIA # 1541-042, Unopened/100PK
Grade #541, Hardened, Ashless. Whatman 541 Filter Papers. A sealed box of 100 Whatman 42.5mm round filter papers.
WHATMAN 1541-47 HARDENED ASHLESS FILTER PAPER, 47mm DIA, GRADE 541, (100 PACK)
Hardened Ashless. – Cat No 1541 047. – Grade 541.