CTL Scientific Supply Corp.
Tritest
Triple-zone Indicator papers pH 1-11 – Three complementary indicator zones on a single strip guarantee clear color differentiation and the possibility to estimate between values. The graduation is 1.0 pH unit. Tritest is available only for the range pH 1-11, but in two forms:Tritest in reel form (without hydrophobic zones) – Paper strip of 10mm width to which three adjoining indicator zones have been applied. (One main indicator and two subsidiary indicators).
Tritest L in reel form (with two hydrophobic zones) – Paper strip to 14m to which three indicator zones have been applied. The zones are Separated by hydrophobic barriers which guarantees a sharp separation of the zones, this is of particular advantage in the highly alkaline range.