Acid Neutralising Powder 1 Litre
Neutralising Powder. The encapsulating powder neutralises to Ph7 and adsorbs, the colour changes from red to purple for Acid or blue to orange for... read on
Neutralising Powder. The encapsulating powder neutralises to Ph7 and adsorbs, the colour changes from red to purple for Acid or blue to orange for Alkali, to indicate neutral.
&... read on