need to book practical activity 23 graph paper rulers pencils repro practical sheet 23 ppq x 2 learning objective know about colorimetry success criteria explain quantitative methods to determine concentrations ...
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...Need to book practical activity graph paper rulers pencils repro sheet ppq x learning objective know about colorimetry success criteria explain quantitative methods determine concentrations of a chemical in solution including and biosensors examples pregnancy test testing for hcg human chorionic gonadotrophin hormone immobilised antibodies on stick are attached dye passes up the binds complementary making become visible second control line show is working coloured lines positive result what colorimetric techniques used identify solutions measure their concentration relies absorbing light particular wavelength however technique can also be analyse colourless substances if they react with...