Biobased-origin verification with C-14
Radiocarbon analysis (ASTM D6866) determines the biobased carbon content of the dyestuff. Its constituent profile is then used for fabric verification.
ORIGIN & COMPOSITION
An analytical system
for natural-dyeing verification
Radiocarbon analysis establishes the dyestuff’s biobased origin. Marker-compound comparison links that dyestuff to the dyed fabric. Together, the two analyses form a verification system for natural dyeing.
Biobased-origin analysis and fabric-marker comparison
A connected verification process from dyestuff-origin analysis to marker compounds in the finished fabric.
C–14+HPLC-DAD / LC-MSNATURAL-DYEING VERIFICATION
Dyestuff-to-fabric marker comparison
HPLC-DAD and LC-MS are used to analyse and compare marker compounds in the dyestuff and dyed fabric. Marker correspondence is assessed together with biobased-origin results to verify natural dyeing.
Published dyestuff analyses
Select a dyestuff to explore radiocarbon and marker-compound data.
DYESTUFF ANALYSIS
Madder
Root
DYESTUFF ANALYSIS
Pomegranate
Fruit rind
DYESTUFF ANALYSIS
Gallnut
Gall
DYESTUFF ANALYSIS
Catechu
Trunk-derived by-product
DYESTUFF ANALYSIS
Myrobalan
Fruit
DYESTUFF ANALYSIS
Himalayan Rhubarb
Root
DYESTUFF ANALYSIS
Marigold
Flower / petal
DYESTUFF ANALYSIS
Mulberry
Leaves
DYESTUFF ANALYSIS
Lac
Waste lac mud
DYESTUFF ANALYSIS
Indigo
Leaves