Gentaur pH 12.454 DIN 19266 Buffer Solution at 25°C - 500ml
https://www.e-photosynthesis.org/shop/fm-07-112454-gentaur-ph-12-454-din-19266-buffer-solution-at-25degc-500ml-26417
https://www.e-photosynthesis.org/web/image/product.template/26417/image_1920?unique=89b0bed
Certified alkaline buffer at pH 12.454 for calibration.
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