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Dyes & Indicators
Our range of dyes & Indicators
Iodine - 20% Solution
Iodine and its compounds are primarily used in medicine, photography, and dyes. Iodine is rare in the solar system and Earth's crust. The iodides are very soluble in water, and the element is concentrated in seawater.
Available in all quantities and pack sizes - Please see options below:
Price:
£
9.00
(£7.50 ex. VAT)
Phenolphthalein 1%, PH Indicator Solution
A handy sized, Brown Glass Dropper Bottle of Phenolphthalein 1% PH Indicator Solution 50 ml
Changes to FUSCIA colour at PH 8.3-10, below this PH range colour is neutral (invisible)
Due to easly identifiable colour change in an oil/isopropanol mixture, this product is widely used for Bio Diesel Titration
Composition
Phenolphthalein
1%
Acetone
1-5%
Ethanol
0-100%
Methanol
...
Price:
£
7.50
(£6.25 ex. VAT)
Bromothymol Blue, 0.04%, PH Indicator Solution, 50ml
A handy sized, Brown Glass Dropper Bottle of Bromothymol Blue 0.04% PH Indicator Solution, 50 ml
Changes from yellow (acid condition) to BLUE colour at PH 6.0-7.6
A more appropriate titation indicator for Biodiesel titration, however due to its low concentricity, the colour change from yellow to blue is very difficult to see when used in a solution of oil with isopropanol, one for the...
Price:
£
9.50
(£7.92 ex. VAT)