| Grade |
Nominal Thickness (µm) |
Nominal Basis Weight (g/m²) |
Typical Water Flow Rate (normalised for 9 cm diameter)* |
Typical Particle Retention in Liquid at 98% Efficiency (µm)** |
Prepleated grade |
| 1 |
180 |
87 |
57 ml/min |
11 |
|
| 2 |
190 |
97 |
38 ml/min |
8 |
Grade 2V |
| 3 |
390 |
185 |
28 ml/min |
6 |
|
| 4 |
210 |
92 |
247 ml/min |
25 |
|
| 5 |
200 |
100 |
5 ml/min |
2.5 |
Grade 5V |
| 591*** |
350 |
161 |
+ |
12 |
|
| 595*** |
150 |
68 |
+ |
7 |
Grade 595 ½ |
| 597*** |
180 |
85 |
+ |
7 |
Grade 597 ½ |
| 598*** |
320 |
140 |
+ |
10 |
Grade 598 ½ |
| 6 |
180 |
105 |
22 ml/min |
3 |
|
| 602 h*** |
160 |
84 |
+ |
< 2 |
Grade 602 h ½ |
| Grade |
Nominal Thickness (µm) |
Nominal Basis Weight (g/m²) |
Typical Water Flow Rate (normalised for 9 cm diameter)* |
Typical Particle Retention in Liquid at 98% Efficiency (µm)** |
Prepleated grade |
| 113 |
420 |
125 |
774 ml/min |
> 15 |
Grade 113V |
| 114 |
190 |
75 |
333 ml/min |
25 |
Grade 114V |
| 1573*** |
170 |
88 |
+ |
25 |
Grade 1573 ½ |
| 1575*** |
140 |
92 |
+ |
< 2 |
|
| 588*** |
205 |
80 |
+ |
- |
|
| 91 |
205 |
65 |
274 ml/min |
10 |
|
| 93 |
145 |
65 |
194 ml/min |
10 |
|
*Measured under gravity for comparative purposes **Particle retention rating at 98% efficiency. ***Please note that this data may be based on historic performance, which was established before Whatman was acquired by GE Healthcare. + Not measured under these conditions
| Grade |
Nominal Thickness (µm) |
Nominal Basis Weight (g/m²) |
Nominal Ash Content* |
Typical Water Flow Rate (normalised for 9 cm diameter)** |
Typical Particle Retention in Liquid at 98% Efficiency (µm)*** |
| 40 |
210 |
95 g/m² |
0.007% |
25 ml/min |
8 |
| 41 |
215 |
85 |
0.007% |
254 ml/min |
20 |
| 42 |
200 |
100 |
0.007% |
5 ml/min |
2.5 |
| 43 |
220 |
95 |
0.007% |
62 ml/min |
6 |
| 44 |
176 |
80 |
0.007% |
11 ml/min |
3 |
| 589/1**** |
190 |
80 |
0.01% |
|
12 to 25 |
| 589/2**** |
180 |
85 |
0.01% |
|
4 to 12 |
| 589/3**** |
160 |
84 |
0.01% |
|
< 2 |
| Grade |
Nominal Thickness (µm) |
Nominal Basis Weight (g/m²) |
Nominal Ash Content1) |
Typical Water Flow Rate (normalised for 9 cm diameter)** |
Typical Particle Retention in Liquid at 98% Efficiency (µm)*** |
| 540 |
160 |
85 |
0.005% |
97 ml/min |
8 |
| 541 |
155 |
78 |
0.005% |
359 ml/min |
22 |
| 542 |
150 |
96 |
0.005% |
13 ml/min |
2.7 |
| Grade |
Nominal Thickness (µm) |
Nominal Basis Weight (g/m²) |
Nominal Ash Content* |
Typical Water Flow Rate (normalised for 9 cm diameter)** |
Typical Particle Retention in Liquid at 98% Efficiency (µm)*** |
| 50 |
115 |
96 |
0.015% |
10 ml/min |
2.7 |
| 52 |
175 |
96 |
0.015% |
66 ml/min |
7 |
| 54 |
185 |
90 |
0.015% |
453 ml/min |
22 |
*Ash content is determined by ignition of the cellulose filter at 900°C in air **Measured under gravity for comparative purposes
***Particle retention rating at 98% efficiency ****Please note that this data may be based on historic performance, which was established before Whatman was acquired by GE Healthcare.
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