Product parameters: Compost blanket

Product parameters for compost blanket
Link to this table

Parameters1,4	Reported as (units of measure)	Blanket Media to be Vegetated	Blanket media to be left Unvegetated
pH2	pH units	6.0 - 8.5	N/A
Soluble Salt Concentration2 (electrical conductivity)	dS/m (mmhos/cm)	Maximum 5	Maximum 5
Moisture Content	%, wet weight basis	30 – 60	30 – 60
Organic Matter Content	%, dry weight basis	25 – 65	25-100
Particle Size	% passing a selected mesh size, dry weight basis	3” (75 mm), 100% passing 1” (25mm), 90% to 100% passing 3/4” (19mm), 65% to 100%passing 1/4” (6.4 mm), 0% to 75% passing Maximum particle length of 6” (152mm)	3” (75 mm), 100% passing 1” (25mm), 90% to 100% passing 3/4” (19mm), 65% to 100%passing 1/4” (6.4 mm), 0% to 75% passing Maximum particle length of 6” (152mm)
Stability3 Carbon Dioxide Evolution Rate	mg CO2-C per g OM per day	< 8	N/A
Physical Contaminants (man-made inerts)	%, dry weight basis	< 1	< 1

¹ Recommended test methodologies are provided in Test Methods for the Examination of Composting and Compost (TMECC, The US Composting Council)
² Each specific plant species requires a specific pH range. Each plant also has a salinity tolerance rating, and maximum tolerable quantities are known. When specifying the establishment of any plant or turf species, it is important to understand their pH and soluble salt requirements, and how they relate to the compost in use.
³ Stability/Maturity rating is an area of compost science that is still evolving, and as such, other various test methods could be considered. Also, never base compost quality conclusions on the result of a single stability/maturity test.
⁴ Landscape architects, plant specialists and project (field) engineers may modify the allowable compost specification ranges based on specific field conditions and plant requirements.