Filter Papers, Qualitative Standard Grade 4 (Whatman)

Grade 4: 20-25 µm with excellent retention of coarse particles and gelatinous precipitates. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Description/Item No. Diameter Mfr. Item No. Qty. Your Cost/Qty Purchase
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-35
5.5 cm 1004-055 Pack/100
Buy 1 $14.89/PK
Buy 2 $12.60/PK
Sign in to Buy 9 In Stock 9 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-36
7 cm 1004-070 Pack/100
Buy 1 $14.51/PK
Buy 2 $12.54/PK
Sign in to Buy This item is not currently stocked. Allow 1-2 weeks. Please call us at 800-328-8378 if you’d like us to keep stock in the future In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-37
9 cm 1004-090 Pack/100
Buy 1 $17.89/PK
Buy 2 $15.45/PK
Sign in to Buy 6 In Stock 6 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-38
11 cm 1004-110 Pack/100
Buy 1 $22.95/PK
Buy 2 $19.80/PK
Sign in to Buy 13 In Stock 13 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-39
12.5 cm 1004-125 Pack/100
Buy 1 $29.15/PK
Buy 2 $25.16/PK
Sign in to Buy 11 In Stock 11 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-40
15 cm 1004-150 Pack/100
Buy 1 $37.27/PK
Buy 2 $32.16/PK
Sign in to Buy 4 In Stock 4 In Stock