Qualitative Filter Papers - Wet Strengthened Grades 濕強(qiáng)定性濾紙
Whatman濕強(qiáng)定性濾紙含有少量的化學(xué)穩(wěn)定樹(shù)脂,因而增強(qiáng)了濕強(qiáng)度。這不會(huì)因此引入任何明顯的雜志到濾液中。但因樹(shù)脂含氮,這些級(jí)別的濾紙不能用于凱氏定氮測(cè)定。
Grade 91:10μm。普通皺紋紙。廣泛用于甘蔗的蔗糖(含量)分析和藥廠實(shí)驗(yàn)室常規(guī)樣品過(guò)濾。
Grade 113:30μm。高載力。與其他濾紙相比厚度強(qiáng)度流速的皺紋紙。是過(guò)濾粗制品或凝膠狀沉淀物的理想產(chǎn)品。
Grade 114:25μm。厚度是Grade 113的一半。但強(qiáng)度非常高的濾紙。表面光潔。易于沉淀物的收集。適合粗制品或凝膠狀沉淀物的過(guò)濾。
Grade 2294:8-15μm。高濕強(qiáng)度而非常厚的濾紙,流速非???,粗糙顆粒的保留力中等。
Grade 2589a:6-12μm。高濕強(qiáng)度中等保留度。中至高流速。
Grade 93:為教學(xué)而設(shè)計(jì)的,這種濾紙的流速和保留力介于1號(hào)和4號(hào)紙之 間。學(xué)生級(jí)截留那些大多數(shù)經(jīng)常載學(xué)生實(shí)驗(yàn)室中遇到的絮凝狀的中等沉淀物。
Grade 520a:15-18μm。薄濾紙,有很好的濕強(qiáng)度和非常高的流速。通常用于技術(shù)應(yīng)用方面,如粘性液體和乳狀液體(如甜汁、飲料和糖漿、松脂溶液、石油或植物提取物)。已折疊好的為Grade 520a 1/2。
Grade 1573:12-25μm??炝魉俑邼駨?qiáng)度,有一個(gè)非常光滑的表面,能容易清除沉淀物。能抗硫酸和硝酸(濃度高達(dá)40%,50℃)、鹽酸(濃度10%,100℃;濃度20%,60℃;濃度25%,20℃)和堿(濃度最多10%,20℃)。已折疊好的為 Grade 1573 1/2。
Grade 1575:<2μm。慢流速高濕強(qiáng)度。與Grade 1573相類似。
Typical Properties - Qualitative Wet Strengthened Grades | ||||||
Grade | Description | Particle retention in liquid (µm) | Filtration speed (approx.) herzberg (s) | Air flow (s/100 ml/in2) | Typical thickness (µm) | Basis weight (g/m2) |
91 | Creped | 10* | 70 | 6.2 | 205 | 71 |
93 | Medium | 10* | 80 | 7 | 145 | 67 |
113 | Fast, creped | 30* | 28 | 1.3 | 420 | 125 |
114 | Fast, smooth | 25* | 38 | 5.3 | 190 | 77 |
588 | Fast | - | - | - | 205 | 80 |
1573 | Fast, smooth | 12 to 25† | 25 | - | 170 | 88 |
1575 | Slow | < 2† | 700 | - | 140 | 92 |
* Particle retention rating at 98% efficiency † Approximate values |
Ordering Information - Qualitative Filter Papers - Wet Strengthened Grades | ||
Catalog Number | Description | |
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1091-110 | Grade 91 circles, 110 mm, 4000/pk (Subdivided into 100) | |
1091-125 | Grade 91 circles, 125 mm, 4000/pk (Subdivided into 100) | |
1091-150 | Grade 91 circles, 150 mm, 1000/pk (Subdivided into 100) | |
1091-165 | Grade 91 circles, 165 mm, 1000/pk (Subdivided into 100) | |
1091-185 | Grade 91 circles, 185 mm, 1000/pk (Subdivided into 100) | |
1091-190 | Grade 91 circles, 190 mm, 1000/pk (Subdivided into 100) | |
1091-240 | Grade 91 circles, 240 mm, 1000/pk (Subdivided into 100) | |
1091-500 | Grade 91 circles, 500 mm, 100/pk | |
1091-920 | Grade 91 sheets, 480 x 480 mm, 500/pk | |
1091-930 | Grade 91 sheets, 580 x 580 mm, 500/pk | |
1091-935 | Grade 91 sheets, 610 x 610 mm, 500/pk | |
1091-902 | Grade 91 sheets, 730 x 1280 mm, 100/pk | |
1091-903 | Grade 91 sheets, 790 x 1280 mm, 100/pk | |
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1093-110 | Grade 93 circles, 110 mm, 100/pk | |
1093-111 | Grade 93 circles, 110 mm, 1250/pk, (50 envelopes of 25 circles) | |
1093-125 | Grade 93 circles, 125 mm, 100/pk | |
1093-126 | Grade 93 circles, 125 mm, 1250/pk (50 envelopes of 25 circles) | |
1093-6212 | Grade 93 circles, 125 mm, 4000/pk (40 bags of 100 circles) | |
1093-6215 | Grade 93 circles, 150 mm, 1000/pk (10 bags of 100 circles) | |
1093-930 | Grade 93 sheets, 580 x 580 mm, 500/pk | |
1093-935 | Grade 93 sheets, 610 x 610 mm, 500/pk | |
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1113-110 | Grade 113 circles, 110 mm, 100/pk | |
1113-090 | Grade 113 circles, 90 mm, 100/pk | |
1113-125 | Grade 113 circles, 125 mm, 100/pk | |
1113-150 | Grade 113 circles, 150 mm, 100/pk | |
1113-185 | Grade 113 circles, 185 mm, 100/pk | |
1113-240 | Grade 113 circles, 240 mm, 100/pk | |
1113-320 | Grade 113 circles, 320 mm, 100/pk | |
1113-500 | Grade 113 circles, 500 mm, 100/pk | |
1113-917 | Grade 113 sheets, 460 x 570 mm, 100/pk | |
1113-991 | Grade 113 sheets, 490 x 1000 mm, 100/pk | |
1600-113 | FilterCup (requires FilterCup stem, catalog number 1600-900), 25/pk | |
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1114-090 | Grade 114 circles, 90 mm, 100/pk | |
1114-125 | Grade 114 circles, 125 mm, 100/pk | |
1114-150 | Grade 114 circles, 150 mm, 100/pk | |
1114-185 | Grade 114 circles, 185 mm, 100/pk | |
1114-240 | Grade 114 circles, 240 mm, 100/pk | |
1114-270 | Grade 114 circles, 270 mm, 100/pk | |
1114-400 | Grade 114 circles, 400 mm, 100/pk | |
1114-930 | Grade 114 sheets, 580 x 580 mm, 100/pk | |
1114-935 | Grade 114 sheets, 580 x 580 mm, 500/pk | |
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Grade 588 circles, 240 mm, 100/pk | ||
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Grade 1573 circles, 125 mm, 100/pk | ||
Grade 1573 circles, 150 mm, 100/pk | ||
Grade 1573 circles, 185 mm, 100/pk | ||
Grade 1573 circles, 240 mm, 100/pk | ||
Grade 1573 circles, 290 mm, 100/pk | ||
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Grade 1575 circles, 125 mm, 100/pk | ||
Grade 1575 circles, 150 mm, 100/pk | ||
Grade 1575 circles, 185 mm, 100/pk | ||
Grade 1575 circles, 200 mm, 100/pk | ||
Grade 1575 circles, 510 mm, 100/pk | ||
Grade 1575 sheets, 400 x 400 mm, 500/pk | ||
Grade 1575 sheets, 1100 x 1100 mm, 100/pk | ||
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1600-900 | FilterCup stem, 1/pk |
Supporting Documentation - Qualitative Filter Papers - Wet Strengthened Grades |
Document Name |
Filtration Simplified |
Qualitative Filter Paper Quick Pick Reference Chart |
Typical Properties of Cellulose Filters |
Typical Properties of Wet Strengthened Filters |