BS ISO 22195-2:2020 pdf free.Textiles – Determination of index ingredient from coloured textiles.
BS ISO 22195-2 The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3696, Water for analytical laboratory use一Specification and test methods.3.1 turmeric Curcuma longa Linne type of rhizomatous herbaceous perennial plant of the ginger family, Zingiberaceae Note 1 to entry: Plants are gathered annually for their rhizomes and propagated from some of those rhizomes in the following season. When not used fresh, the rhizomes are boiled and then dried in ovens, after which they are
ground into a deep-orange/yellow powder). 3.2 coloured expressing of colours to textiles by dyeing or printing 3.3 natural colourant colourant obtained from plants, wood, rocks, soil, insects or any other thing existing on earth without any chemical reaction adopted before colouring of textiles.4 Principle Natural colourants usually contain several chemical constituents. Depending on the type of natural colourant, each contains a distinctive chemical. This characteristic chemical remains in the fabric dyed with natural colourant. Therefore, analysis of natural coloured fabrics by chromatography can detect characteristic chemicals depending on the kind of natural colourant. If the index component curcumin is detected through this test method, it cannot be said that it is necessarily stained with turmeric alone. However, based on this principle, applying this test method to unknown coloured fabrics or textiles is useful to provide a minimum amount of information that can be used to confirm whether the fabric is coloured using turmeric.Cut the sample into pieces of approximately (5 x 5) mm and approximately 2 g. Weigh it to the nearest 0,01 g, and then place it into the glass container ([6.3). Pipette 20 ml of water and methanol each into the other glass container and it poured to cut specimen
containing glass container. Place the glass container containing cut specimen into an ultrasonic water bath (6.2)at (60土2)。C for (20土1) min. Afterwards, let the extract evaporate using by rotary evaporator [6.4) at ([60土2] °C until all used water and methanol has evaporated.BS ISO 22195-2 pdf download.