Afterwards the samples shall be carefully rinsed with distilled water containing not more than 0.2 per cent impurities at 23 °C +- 5 °C and then wiped off with a soft cloth.
Afterwards the samples shall be carefully rinsed with distilled water containing not more than 0.2 per cent impurities at 23 °C +- 5 °C and then wiped off with a soft cloth.