Kemesta

ISO 20567-2:2017 specifies a method for the evaluation of the resistance of automobile finishes and other coatings to the impact of a wedge-shaped body projected onto the surface under test to simulate the impact of stones.

Specifies a method for the determination of the apparent density of a moulding powder or a granular material. The sample is pured through a specified funnel into a measuring cylinder of 100 cubiccentimeter capacity, the excess is removed with a straightedge and the mass of the contents is determinded by weighing. Expression of the apparent density in grams per millilitre.

A portion of 60 g of loose moulding material is dropped little by little into a measuring cylinder as evenly distributed as possible. A plunger with specified mass fitting to the measuring cylinder is slowly lowered until it is entirely supported by the material. After 1 min the volume of the material with the plunger resting upon it, shall be determined and the apparent density shall be calculated.

ISO 17827-1:2016 specifies a method for the determination of the size distribution of particulate biofuels by the horizontally oscillating screen method. It applies to particulate uncompressed fuels with a nominal top size of 3,15 mm and above, e.g. wood chips, hog fuel, olive stones, etc. The method is intended to characterize material up to a particle size class of P63. For larger P-classes, the characterization is mainly done by hand sorting.

ISO 17827-2:2016 specifies a method for the determination of the size distribution of particulate biofuels by the vibrating screen method. The method described is meant for particulate biofuels only, namely, materials that either have been reduced in size, such as most wood fuels, or are physically in a particulate form. This part of ISO 17827 applies to particulate uncompressed fuels with a nominal top size of 3,15 mm and below (e.g. sawdust).

A test sample of 5 g is weighed into a weighing bottle and spread evenly over the bottom. The bottle is dried at 55 C. After 3 h the sample is remove from the open, cooled to room temperature and conditioned. The volatile matter is given as a percentage by mass.