Gentaur pH 9.00 Colour Coded Buffer Solution at 20°C - 500ml
https://www.bioguid.info/shop/fm-07-10905c-gentaur-ph-9-00-colour-coded-buffer-solution-at-20degc-500ml-8469
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Convenient pH 9.00 colour coded buffer, 500ml bottle, ensures consistent calibration results at 20°C.
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