Description
D/2 Biological Solution is effective for removing harmful biological and air pollutant staining from building materials including masonry, marble, granite, limestone, brownstone, travertine, terra cotta, concrete, stucco, wood, canvas and vinyl & aluminum siding.
Won’t deposit harmful residues
D/2 was developed by conservators who know the damage that can be done by cleaners containing acid or salts. Our product has been specially formulated without these harmful agents. D/2 is a nearly pH-neutral quaternary ammonium solution with surfactants that help carry surface contaminants away. No other solution is more trusted by architectural and monument conservators.
Can be used on a variety of surfaces
D/2 has been successfully used to remove staining from a variety of surfaces including natural stones such as marble, granite, limestone, sandstone, slate; masonry surfaces such as brick and cast stone; concrete; wood; aluminum and vinyl siding; and canvas.
It works!
D/2 has been successfully used to clean millions of buildings and monuments. From the White House to Arlington National Cemetery, D/2 is trusted to work and keep on working when results matter.
Safety Information
D/2 Biological Solution is non-mutagenic, and contains no carcinogenic compounds as defined by NTP, IARC, or OSHA. It is considered essentially non-toxic by swallowing, as it has an oral LD50 of 2.0 g/kg of body weight. No special ventilation is required during use.
Packaging and Coverage
D/2 Biological Solution is available in 1 quart, 1 gallon and 5 gallon containers, and 55 gallon drums.
The area that can be treated with one gallon of D/2 will vary considerably as a function of the nature and extent of biological deposits, as well as the physical characteristics of the surface. Typical coverage to remove medium deposits will vary from 250 to 350 square feet per gallon.
Features and Benefits
- Fast acting: 10 to 15 minutes contact time for great results.
- Biodegradable
- Contains no acids, salts, or bleach
- pH 9.5
- Will not etch metals or glass
- Safer to use around plantings
- Is not a hazardous material and requires no special handling or protection
- Use full strength, no in-field mixing required
- Shelf life of 5 years
How to Use – Two Application Methods
Immediate Result Method
- Apply D/2 Biological Solution with a brush, roller, hand pump sprayer (garden style pump sprayer) or low pressure power sprayer.
- Allow undiluted D/2 to remain on the surface 10-15 minutes.
- Apply additional D/2 as necessary to maintain a wet surface.
- Scrub with soft nylon or natural bristle brush. DO NOT USE METAL BRUSH.
- Lightly mist with water and continue scrubbing.
- Rinse thoroughly with clean, potable water.
- Reapply if rain occurs within 12 hours of application.
No Scrub / No Rinse Method
- Using a sprayer (pump-up, low pressure, or other,) wet the entire surface with D/2.
- Allow to air dry.
- D/2 works with the elements and results occur within one week to one month, depending on severity of soil. Reapply if rain occurs within 12 hours of application.
For more information, visit the D/2 Biological Solution product website.
