3305: Change in Colour (Includes Assessment Mask) 3355: Assessing Staining (Includes Assessment Mask) 3716: Assessment Mask 3355 SDCE Grey Scale for Staining The grey scale consists of nine pairs of non-glossy grey and white coloured chips which illustrate the perceived depth of staining. These give a corresponding fastness rating of 5, 4-5, 4, 3-4, 3, 2-3, 2, 1-2, […]
4151: L-Histidine Monochloride Monohydrate 4152: Sodium Chloride 4153: Sodium Dihydrogen Orthophosphate Dihydrate 4154: Disodium Hydrogen Orthophosphate Dihydrate Chemicals for the preparation of the acid and alkaline solutions in BS EN ISO 105 E04. Colour Fastness to Perspiration: 100g packs – L-Histidine monochloride monohydrate (C6H9O2N3.HCl.H2O) 250g packs – Sodium dihydrogen orthophosphate dihydrate (NaH2PO4.2H2O) 250g packs – Disodium hydrogen orthophosphate dihydrate
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