Orco Fiber Identification Stain BR™ is a special blend of dyestuffs designed to easily identify various types of natural and synthetic fibers even when in woven blends. Its ease of use and quick test times make it particularly valuable when spot checking stock and incoming fabrics before dyeing.The unique blend of dyes provides a strong contrast of fiber colors so as to make accurate identifications of each fiber. This product is available in 8 oz, 1 lb, 2 lb and 5 lb quantities

Directions for use:

Depending on fabric condition or stock being evaluated, weigh approximately 0.25 gm of Orco Fiber Identification Stain BR™ and dissolve in 250 cc or 9 fluid ounces of hot water (120° – 140° F). Add a small square of fabric (~3×3 inch) or 2-4 grams of loose fiber stock along with a piece of multi-fiber test fabric and bring to a boil for 3 – 5 minutes.  Rinse both the unknown fabric/stock and the test fabric well in cool water, dry, and compare.

Multi-fiber test fabric is available in convenient one meter-length rolls that can be cut into suitable widths. The actual height is approximately 5 inches making the visual identification easy.


Staining of Various Fibers



Amol (bright)

Bleached Cotton

Creslan 61

Dacron 54

Dacron 64

Nylon 6.6

Orlon 75

Spun Silk