Whatman 1442-917 High-Quality Cotton Linters Ashless Quantitative Filter Paper, Grade 42, Sheet, 46cm Width x 57cm Length - Pack of 100 by mLabs : Amazon.in: Industrial & Scientific
Whatman 1004090–100 Grade 4 Qualitative papier filtre, 90 mm d'épaisseur et volume maximum 1621 ml/M (lot de 100) : Amazon.fr: Commerce, Industrie et Science