Grade 589/2 Medium Fine Precipitate Filter, 185mm Circle (100 pcs) SKU: 10300114

Quantitative Ashless Filter Paper - 10300114

Methods specifying filter ignition with collected precipitate demand ash contributions that remain negligible and predictable across production lots. Each production lot is tested for ash content and documented with a certificate to support analytical traceability requirements. For this reason, each sheet reflects production standards where fiber density, thickness, and retention characteristics are verified before lot release.

Key Filter Paper Characteristics

• Nominal ash content of <0.01% ensures minimal inorganic residue after ignition, protecting the accuracy of gravimetric determinations.
• Nominal basis weight of 85g/m² reflects the fiber density that determines flow rate, retention, and mechanical handling characteristics.
• Smooth surface finish facilitates complete precipitate recovery and clean separation from the paper during transfer operations.
• Designed for gravimetric determinations where the filter paper is ashed or ignited as part of the analytical measurement step.
• Ashless filter paper provides the documented low residue needed for ignition-based analytical procedures where filter mass affects results.

If you're transitioning from qualitative screening to quantitative gravimetric work, the documented ash content above confirms this paper's suitability. Ashless purity positions this paper as your standard medium for any method where the filter becomes part of the final measurement. Make the decision for consistency and reliability, ensuring that your laboratory maintains its reputation for high-quality, error-free output.

Diameter

185mm

Flow Speed

Medium

Folded/ Fluted/ Pleated

No

Grade

589/2

Hardened (Yes/ No)

No

Material

Cellulose Fiber

Nominal Ash Content (%)

<0.01%

Nominal Basis Weight (g/ m²)

85g/m²

Pack Count

100

Particle Retention

4-12um

Pore Size (µm)

4.0-12.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wet Strengthened (Yes/ No)

No

Wettability

Hydrophilic

• Aluminum Analysis - Collects aluminum hydroxide precipitate for ignition and weighing in metallurgical and environmental methods.
• Nickel Determination - Retains nickel dimethylglyoxime precipitate for ignition-based quantification in alloy and plating bath testing.
• Sulfate Gravimetry - Retains barium sulfate precipitate for ignition-based sulfate quantification in water and industrial samples.
• Iron Determination - Collects iron hydroxide precipitate for gravimetric determination in ore assay and environmental analysis.
• Phosphate Gravimetry - Collects magnesium ammonium phosphate precipitate for ignition to pyrophosphate in soil and fertilizer analysis.
• Silica Determination - Captures dehydrated silica for gravimetric analysis in cement, geological, and industrial raw material testing.