Quantitative filter paper Quantitative Filter Paper is used to filter substances from liquid or air flow. Grade 351 Quantitative Ashless Filter Paper $10.89 – $47.16 Select options Grade 352 Quantitative Ashless Filter Paper $4.86 – $34.10 Select options Grade 353 Quantitative Ashless Filter Paper $10.88 – $47.16 Select options Grade 354 Quantitative Ashless Filter Paper $10.88 – $97.74 Select options Grade 371 Quantitative Ashless Filter Paper $10.70 – $16.30 Select options Grade 372 Quantitative Ashless Filter Paper $7.86 – $14.26 Select options Express Delivery! Quality Assured 14 day return policy Secure Payment