Bonstone

D/2 Biological Solution

SKU: BON-D/2 BIOLOGICAL SOLUTION

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Description

D/2 Biological Solution is a biodegradable, professional-grade cleaner formulated to safely remove mold, mildew, lichen, algae, and air pollutant staining from indoor and outdoor surfaces. Developed by conservators for conservators, D/2 has been trusted for decades on historic landmarks and monuments—including the White House and Arlington National Cemetery—making it the industry standard for architectural and monument restoration.

Key Features & Benefits

  • Fast-acting performance – Visible cleaning in as little as 10–15 minutes with brushing

  • Biodegradable & pH neutral – Safe for the environment and non-toxic to plants and wildlife

  • No harsh chemicals – Contains no bleach, salts, acids, or solvents

  • Non-corrosive – Will not etch glass or metal surfaces

  • Easy to use – Ready to apply with no mixing required

  • Long-lasting results – Works immediately and continues cleaning over time

  • Proven track record – Specified by the U.S. Department of Veterans Affairs for headstone maintenance

Common Applications

  • Cleaning monuments, headstones, and sculptures

  • Restoration of historic buildings and landmarks

  • Removing stains from siding, roofing, and outdoor structures

  • Maintenance for stone, concrete, and masonry facades

Compatible Substrates

  • Natural stone: granite, marble, limestone, sandstone, slate, travertine

  • Masonry: brick, brownstone, terra cotta, cast stone, stucco, concrete

  • Wood, aluminum, vinyl siding, fiberglass, canvas, plastic, and asphalt roofing

Technical Specifications

Property Value
Physical Form Transparent, low viscosity liquid
Color Almost colorless
pH 9.5
Specific Gravity 1.01 g/cc
Solubility in Water Complete
Vapor Pressure 25 mm Hg @ 20°C
Shelf Life 5 years
Typical Coverage 250–350 sq. ft. per gallon (medium deposits)

Compliance & Safety

  • Biodegradable and non-hazardous

  • Zero VOC formulation

  • Non-mutagenic and contains no carcinogenic compounds (per NTP, IARC, OSHA)

  • No special handling or ventilation required

Packaging & Ordering Information

  • Quart (individual or case of 12)

  • Gallon (individual or case of 4)

  • 5 Gallon Pail

  • 55 Gallon Drum (available by request)

How to Use

  • Immediate Results Method: Apply undiluted, allow 10–15 minutes dwell, scrub with a soft brush, rinse.

  • No-Scrub Method: Apply to dry surface and allow natural weathering to clean over time.

Trusted by Conservators Worldwide

No other cleaner is more trusted by conservators. Whether restoring a national monument, cleaning cemetery headstones, or maintaining architectural stone, D/2 Biological Solution delivers safe, long-lasting results without damaging delicate surfaces.

Order D/2 Biological Solution today from Chemical Concepts for proven, professional-grade monument and architectural cleaning. For bulk orders, technical support, or contractor pricing, call 800-220-1966 or email [email protected].

Additional information

Weight 2.5 lbs
Dimensions 4.5 × 2.5 × 7.5 in
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