Whatman Grade 1 Qualitative Filter Paper Circles 5.5 cm, 1001-042 – New 100 Pk
(Product: Whatman Grade 1 Qualitative Filter Paper. Qualitative analysis for precipitates (e.g., lead sulfate, calcium oxalate). Format: Circles. Soil analysis and seed testing in agriculture. 10.5 – 13 s/100mL/in²).