Grade 589/1 Filter for Coarse Precipitate Retention, 90mm Circle (100 pcs) SKU: 10300009

Quantitative Ashless Filter Paper - 10300009

Classical analytical methods requiring filter ignition with collected precipitate demand documented ash values verifiable through every production lot. Certificate of analysis provides lot-specific ash content values for incorporation into method blank calculations and quality records. On this basis, consistent physical properties across the full sheet area support uniform filtration results in both gravity and vacuum applications.

Key Filter Paper Characteristics

• Manufactured under controlled acid washing conditions, each sheet delivers consistent ash levels across production lots for method reproducibility.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Pure cellulose fiber matrix combines low inorganic residue with the mechanical integrity needed for careful precipitate transfer.
• Non-hardened paper balances effective particle retention with economical unit cost for high-volume routine laboratory use.
• Controlled fiber density balances rapid filtration with complete precipitate capture for efficient quantitative determinations.

If you're transitioning from qualitative screening to quantitative gravimetric work, the documented ash content above confirms this paper's suitability. With these demands in mind, documented ash specifications on every lot give you the traceability your regulated analytical methods and quality audits require. Elevate the quality of your analytical data today by standardizing on a filtration product built to meet the exact specifications of your applications.

Diameter

90mm

Flow Speed

Fast

Folded/ Fluted/ Pleated

No

Grade

589/1

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.01%

Nominal Basis Weight (g/ m²)

80g/m²

Pack Count

100

Particle Retention

12-25um

Pore Size (µm)

12.0-25.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Chloride Gravimetry - Retains silver chloride precipitate for mass-based chloride determination in water quality and process control.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Gravimetric Determination - Collects and ignites precipitates for accurate mass measurement with negligible filter blank contribution.
• Zinc Analysis - Collects zinc ammonium phosphate precipitate for ignition-based quantification in metallurgical and water testing.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Total Ash Testing - Provides the ultra-low blank needed for accurate ash determination in food, pharmaceutical, and material samples.