ISO BI Ballast #1
/ PackBS EN ISO 6330
Ballast Type I. 100% Cotton. Pack of 4 Pieces is approx 1.2 Kg
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BS EN ISO 6330
Ballast Type I. 100% Cotton. Pack of 4 Pieces is approx 1.2 Kg


80% Wool and 20% Cotton Ballast 30×30 cm
Consisting of clean textile pieces which shall be either white or of a light colour and which shall consist of approximately 80% wool pieces and 20% cotton pieces by mass.
Each piece shall comprise two layers of fabric sewn together at the edges and shall be (300 +/-30) mm x (300 +/-30) mm.

ISO 6330:2021
Ballast Type III
100% Polyester
According to Annex G
20 Pieces/Approx 1 Kg in a Pack

ISO 6330
Ballast Type II
50% Polyester / 50% Cotton
Pack of 8 Pieces is approx 2 Kg

Polyester-Cotton (50-50) Ballast
Two Layers, 800 +/- 20 mm (31.5 +/- 0.75 inches)
According to ISO 3175-4 section 6.4 Ballast Specifications
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