BS ISO 2031:2015 pdf free.Granulated cork – Determination of apparent bulk density.
This International Standard specifies a method of determining the apparent bulk density of granulated cork, as defined in ISO 633.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 633, Cork — Vocabulary
ISO 2067, Granulated cork — Sampling
3 Apparatus
3.1 Balance, accurate to 0,5 g.
3.2 Oven, capable of maintaining a temperature of (20 ± 2) °C and a relative humidity of (65 ± 5) %.
3.3 Cubic container with a known accurate mass, capacity 2 dm3 (side 126 mm) to be used with granulates having a grain size larger than 4 mm (see Figure 1).
3.4 Cubic container with a known accurate mass, capacity 1 dm3 (side 100 mm) to be used with granulates having a grain size equal to or lower than 4 mm (see Figure 1).
3.5 Wooden ruler.
3.6 Hopper stand, for the hopper with a height such that the upper rim of the hopper is 450 mm away from the supporting surface (see Figure 1).
3.7 Conical hopper, of stainless steel, with:
— upper and lower diameters of 300 mm and 70 mm respectively, at a distance of 200 mm from each other;
— the top olthe hopper is open and the bottom ends in a cylindrical tube 50 mm high with a removable bottom, which allows a quick and complete opening of the cylindrical tube, in such a way that the granulated cork falls down into the container, always at the same speed and flow type (see Figure 1).BS ISO 2031 pdf free download.