ADVANTEC定量濾紙Quantitative Filter Papers No.5A定量濾紙
ADVANTEC定量濾紙NO.5A(無灰):
zui高質(zhì)量初次使用棉纖維,灰分: 0.01% (No.4A除外 - 0.025%),酸洗處理: NO.3,5A,5B,5C,6 經(jīng)鹽酸和氫氟酸清洗,再用超純水清洗至中性. No.4A 在用純水清洗前,再經(jīng)HNO3清洗;
高流速,保留粗糙微粒和凝膠狀物和沉淀(>10μm),過量氧化物和金屬浮質(zhì),環(huán)境監(jiān)控,測定鋼鐵的二氧化硅含量;
用途:重量分析,環(huán)境監(jiān)控
常規(guī)直徑47mm、55mm、70mm、90mm、110mm、125mm等
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類別 | 應(yīng)用 | 重量(g/m2) | 厚度(mm) | 截留顆粒(μm) | Collection Efficiency (%, 0.3μm DOP) | No. 3 Ashless | Retains medium particles, fast flow rate. For analysis of soils, fertilizers, cement, and minerals. | 113 | 0.23 | Medium (5-10) | 80 | No. 5A Ashless | Retains coarse particles and gelatinous precipitates, fast flow rate. For filtration of hydroxides, metallic aerosols, environmental monitoring, silica content determination in steel. | 97 | 0.22 | Coarse and Gelatinous (>10) | 75 | No. 5B Ashless | Retains medium particles, such as CaCO3, CaCO4, PbSO4, MnCO3, ZnCO3, ZnS, AgCl | 108 | 0.21 | Medium (5-10) | 90 | No. 5C Ashless | Retains fine particles, such as SrSO4, BaSO4, HgCrO4, and collodial dispersions. Filter for general gravimetric analysis. | 118 | 0.22 | Fine (<5) | 93 | No. 6 Ashless | Retains medium-fine particles, trace, and precious metals. | 103 | 0.20 | Medium-Fine (2-10) | 90 | No. 7 Ashless | Highest purity for retaining medium particles. Filter for precise gravimetric analysis. | 87 | 0.18 | Medium (5-10) | 85 | No. 4A Hardened Ashless | Retains fine particles, slow flow rate. High wet strength, suitable for use under high pressure, with good pH and chemical resistance. | 96 | 0.12 | Very Fine (<5) | 90 | |