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 $16.83/PK
Buy 2 $14.24/PK
Add to Cart 9 In Stock 9 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-36
7 cm 1004-070 Pack/100
Buy 1 $16.40/PK
Buy 2 $14.17/PK
Add to Cart 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 $20.22/PK
Buy 2 $17.46/PK
Add to Cart 3 In Stock 3 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-38
11 cm 1004-110 Pack/100
Buy 1 $25.93/PK
Buy 2 $22.37/PK
Add to Cart 10 In Stock 10 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-39
12.5 cm 1004-125 Pack/100
Buy 1 $32.94/PK
Buy 2 $28.43/PK
Add to Cart 11 In Stock 11 In Stock
Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-40
15 cm 1004-150 Pack/100
Buy 1 $42.12/PK
Buy 2 $36.34/PK
Add to Cart 1 In Stock 1 In Stock