Gentaur pH 9.22 Buffer Solution at 20°C - 1l
https://www.itcm-sussex.com/shop/fm-07-10922-gentaur-ph-9-22-buffer-solution-at-20degc-1l-32381
https://www.itcm-sussex.com/web/image/product.template/32381/image_1920?unique=f12b1fb
1L pH 9.22 buffer solution, suitable for standard alkaline calibration at 20°C.
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