緩衝液 pH 4.0 (20℃) Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide

緩衝液 pH 4.0 (20℃) Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide

緩衝液 pH 4.0 (20℃) Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide

緩衝液 pH 4.0 (20℃) Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide

緩衝液 pH 4.008 (25℃) With fungicide, according to DIN 19266

緩衝液 pH 5.0 (20℃) Citric acid / sodium hydroxide solution, with fungicide, traceable to SRM from NIST

緩衝液 pH 6.0 (20℃) Citric acid / sodium hydroxide solution, with fungicide, traceable to SRM from NIST

緩衝液 pH 6.865 (25℃) With fungicide, according to DIN 19266

緩衝液 pH 7.0 (20℃) Potassium dihydrogen phosphate / disodium hydrogen phosphate, traceable to SRM from NIST, with fungicide

緩衝液 pH 7.0 (20℃) Potassium dihydrogen phosphate / disodium hydrogen phosphate, traceable to SRM from NIST, with fungicide

緩衝液 pH 7.0 (20℃) Potassium dihydrogen phosphate / disodium hydrogen phosphate, traceable to SRM from NIST, with fungicide

緩衝液 pH 7.0 (20℃) Green colored, potassium dihydrogen phosphate / disodium hydrogen phosphate, with fungicide

緩衝液 pH 7.0 (20℃) Green colored, potassium dihydrogen phosphate / disodium hydrogen phosphate, with fungicide

緩衝液 pH 7.0 (20℃) Green colored, potassium dihydrogen phosphate / disodium hydrogen phosphate, with fungicide

緩衝液 pH 7.413 (25℃) With fungicide, according to DIN 19266

緩衝液 pH 8.0 (20℃) Borax / hydrochloric acid, traceable to SRM from NIST

緩衝液 pH 9.0 (20℃) Borax / hydrochloric acid, traceable to SRM from NIST

緩衝液 pH 9.0 (20℃) Borax / hydrochloric acid, traceable to SRM from NIST

緩衝液 pH 9.0 (20℃) Borax / hydrochloric acid, traceable to SRM from NIST

緩衝液 pH 9.0 (20℃) Blue colored, borax / hydrochloric acid