15 cm Lab Filter Paper, Standard Qualitative Grade 1 - ZENPORE Medium Flow 150 mm (100 Discs)

15 cm Lab Filter Paper, Standard Qualitative Grade 1 - ZENPORE Medium Flow 150 mm (100 Discs)

• GRADE 1 : 15cm - Equivalent to Whatman qualitative grade 1, standard lab filter paper (150mm)
• LAB FILTER - Routinely used in lab to determine fat content, extract solids and clarify liquids
• CHEMISTRY CLASS - Filter paper can teach basic qualitative separations and paper chromatography
• AIR FILTRATION - Collect medium particles for pollution monitoring
• MEDIUM RETENTION / MEDIUM FLOW - Retains medium crystalline particles (10~15 micron)

<p><b>GRADE 1 STANDARD</b> <i>Qualitative Filter Paper</i> <br>Equivalent to Whatman grade 1, this laboratory filter paper is commonly used in labs where you need to separate a solid or precipitate from the filtrate.<br>Made from high alpha-cellulose cotton, this standard lab filter is not intended for ashing.</p><p><b>APPLICATIONS</b><ul><li><b>science :</b> Routine qualitative analytical separations and liquid clarification in labs<li><b>food :</b> Solid foodstuffs separation and liquid extraction, fat content determination<li><b>beverage :</b> Analysis and filtration of dense liquids like fruit pulps, musts, syrups, oil or plant extracts<li><b>agriculture :</b> Soil analysis and seed testing<li><b>environment :</b> Medium particles collection for pollution monitoring (stain intensity)<li><b>education :</b> Basic qualitative separations teaching and paper chromatography</ul></p><p><b>MEDIUM RETENTION</b><br>Retains medium-fine crystalline precipitates like:<ul><li>Sulfates <i>(Pb, coarse form of Ba and Ca)</i><li>Carbonates <i>(Ba, Ca)</i><li>Phosphates <i>(Al, Pb, Struvite)</i><li>Chromates <i>(Fe, As, Pb)</i><li>Ca Oxalate <i>(hot)</i>, Pb Oxide</ul></p><p><b>SPECS</b><ul><li><b>paper :</b> pure cotton cellulose<li><b>flow :</b> medium<li><b>retention :</b> 10~15 μm <i>(medium)</i><li><b>speed :</b> 30~35 s <i>(10ml DIN 53137)</i><li><b>diam :</b> 150 mm<li><b>thickness :</b> 150 μm<li><b>weight :</b> 86 g/m²<li><b>ash :</b> 0.1%<li><b>qty :</b> 100 discs</ul></p><p><b>PLAIN-DISCS</b><br>Those <b>Flat Discs</b> are suitable for gravity and Buchner low suction vacuum filtration.<br>The same affordable filters are also available funnel-ready as <b>ST001-150q</b> (folding) or <b>ST001-150v</b> (pleating).</p><p><b>EQUIVALENCE & SIZE</b><br>See the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.</p>