Munktell FILTER PAPERS FOR SOIL ANALYSIS 专用试纸:
Grade Basis Filtration Application
Weight Velocity Herzberg
g/m2 sec/10 ml sec/100 ml
12/N 80 25 150 general filtration
3 hw 65 20 140 general filtration
13 P 80 60 240 low phosphate content
14 P 80 150 750 low phosphate content
14 M 80 150 750 low magnesium content
131 80 100 1300 low phosphate + potassium content
132 80 55 450 low phosphate + potassium content
292 87 45 500 low nitrogene content
292a 97 60 650 low nitrogene content
00H 80 160 1500 quantitative paper
00M 90 13 130 quantitative paper