PSD-A0 S Acid-Washed Coconut Shell Carbon – Low Ash for Semiconductor UPW

Key Features

• <3% ultra-low ash after deep acid washing

  Multi-stage acid leaching removes soluble mineral impurities, drastically reducing metal ion release into treated water.

• Neutral effluent pH (5–8)

  Stable neutral output pH avoids altering feedwater chemistry and prevents pH shock to downstream membranes and ion exchange resins.

• NSF 61 certified food-contact safety

  Certified to NSF/ANSI 61 standard, safe for direct contact with potable water and food/beverage process streams.

• High mechanical integrity

  ≥95% hardness resists attrition during backwashing, preventing fine carbon fines from migrating to downstream polishing stages.

• Broad size compatibility

  Available in multiple mesh grades to fit pretreatment tanks, polishing columns and cartridge filter configurations.

Applications

• Semiconductor UPW Polishing Without Metal Contamination: Standard carbon contains soluble minerals that leach into ultra-pure water, causing conductivity spikes and wafer yield loss. PSD-A0 S's multi-stage acid washing reduces ash to <3% and strips metal ions, providing high adsorption capacity without the ppb-level contamination that standard grades introduce.

• POU Drinking Water Purity: End-of-tap filters and countertop purifiers demand media with minimal extractables. PSD-A0 S's neutral pH and low leachable metals ensure final water purity and taste quality beyond what standard unwashed carbon can achieve.

• Electroplating Solution Maintenance: Organic breakdown products in plating baths degrade deposit quality. PSD-A0 S removes these contaminants without introducing iron, copper or zinc that would interfere with plating chemistry.

• High-End Food & Beverage Fine Processing: Premium beverage and bottled water production with zero tolerance for media-derived impurities requires acid-washed purity. PSD-A0 S's clean profile supports these strict standards.

Technical Advantages

• Reduces leachable metal impurities by over 70% compared to standard unwashed coconut carbon, significantly lowering secondary contamination risk.

• Neutral effluent pH eliminates alkaline drift, protecting polyamide RO membranes and anion exchange resins from pH-related degradation.

• Full retention of ≥1000 mg/g iodine adsorption capacity—acid washing removes only surface ash, not internal pore volume.

• Each batch supplied with extractable metal analysis reports, supporting quality audits in semiconductor, pharma and electronics manufacturing.

Certifications

PURESTAR adheres to strict quality control and international certification standards. Our authentic certifications include:

• ISO 9001: Quality Management System

• ISO 14001: Environmental Management System

• ISO 45001: Occupational Health & Safety Management System

• NSF: Certified for drinking water safety & sanitation

• HALAL: Certified for food-contact applications

Quality Assurance

• MSDS (Material Safety Data Sheet) available upon request

• COA (Certificate of Analysis) provided with every shipment

All products undergo strict quality inspection to deliver stable, reliable performance for global customers.

Why Choose Us

• 10+ years of experience in activated carbon manufacturing and export

• Stable production capacity ensuring reliable supply for bulk orders

• Strict quality control system from raw material to final product

• Customized solutions based on different industrial applications

• Fast response within 12–24 hours for all inquiries

• Professional technical support for product selection and application guidance

FAQ

Q: Can PSD-A0 S replace LC-A0 in semiconductor UPW?

A: PSD-A0 S is suitable for standard UPW pretreatment and general polishing. For advanced-node fabs with strictest TOC and trace-extractable requirements, LC-A0 dedicated semiconductor-grade carbon remains optimal.

Q: Does acid washing reduce adsorption capacity?

A: No. Acid washing removes soluble ash and mineral residues without damaging internal pore network. PSD-A0 S maintains the same ≥1000 mg/g iodine value as standard PSD-A0.

Q: How does PSD-A0 S compare to PSD-A1 S?

A: PSD-A1 S delivers higher 1100 mg/g iodine value for stronger organic removal in higher-load scenarios. PSD-A0 S is the standard high-purity grade for most routine high-purity water applications.