pH test paper Duotest pH 1–12, with two indicator zones, refill pack CL01.1501.0100 4-(6-Hydroxy-2-naphthyl)-2-butanone

4-(6-Hydroxy-2-naphthyl)-2-butanone

d2 C27 ααα (20R)-Cholestane

Formate (HCO2)- Single-Element Ion Anion Standard

82799-44-8

pH test paper Duotest pH 1–12, with two indicator zones, refill pack CL01.1501.0100 4-(6-Hydroxy-2-naphthyl)-2-butanoneDuotest indicator papers combine two different indicator zones on a single strip. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colors and increases the mechanical stability. The refill reels of indicator paper come singly sealed to ensure long term stability and protection against many external influences. They have to be placed in the plastic reel with color scale to be used. Technical Data