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Identity (UV/VIS-Spectrum) passes test

Clarity of solution (1 g/l; ethanol) passes test

Transition range pH 5.8 - pH 7.6 yellow - blue

Absorption maximum λ 1 max. (buffer pH 5.8) 430 - 435 nm

Absorption maximum λ 2 max. (buffer pH 7.6) 615 - 618 nm

Spec. Absorptivity A 1%/1cm (λ 1 max.; 0.005 g/l; buffer pH 5.8; calc. on dried substances) 260 - 305

Spec. Absorptivity A 1%/1cm (λ 2 max.; 0.005 g/l; buffer pH 7.6; calc. on dried substances) 455 - 530

Loss on drying (110 °C) ≤ 3 %

Transition range (according to ACS) passes test

Sensitivity test passes test