pH glass electrode (100-H171)
https://www.scientificgear.shop/shop/k67-00001-09-k100-h171-ph-glass-electrode-100-h171-30365
https://www.scientificgear.shop/web/image/product.template/30365/image_1920?unique=b6d8148
pH Glass Electrode (670000109) (H171)
