Merck 109435 pH 4 Buffer Solution (Citric Acid/Sodium Hydroxide/Hydrogen Chloride), Traceable To Srm From Nıst And Ptb pH 4.00 (20°C) Certipur® 1 L
Marka: Merck
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| MERCK 109435 buffer solution pH 4 (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 4.00 (20 °C) Certipur® 1 L | |
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| Catalogue Number | 109435 |
| Product Information | |
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| HS Code | 3822 00 00 |
| Physicochemical Information | |
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| Density | 1.01 g/cm3 (20 °C) |
| pH value | 4.0 (H₂O, 25 °C) |
| Specifications | |
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| pH-value (20 °C) | 3.99 - 4.01 |
| Measured with a combined glass electrode after 5-point calibration according to DIN 19268 (expanded measurement uncertainty +/-0.01) with ref.buffer solutions according to DIN 19266, prepared with primary reference materials, at the accredited laboratory according to DIN EN ISO/IEC 17025. | |
| Deviations of pH (ΔpH) at various temperatures: | |
| (0 °C) | + 0.05 |
| (5 °C) | + 0.04 |
| (10 °C) | + 0.02 |
| (15 °C) | + 0.01 |
| (20 °C) | +/- 0 |
| (25 °C) | + 0.01 |
| (30 °C) | + 0.01 |
| (35 °C) | + 0.01 |
| (40 °C) | + 0.01 |
| (50 °C) | +/- 0 |
| Traceable to primary reference materials from: NIST 189c, 188, 185h, 186 Ig, 186 IIg, 187e PTB OX-179/10,TA-212/11,PHT-232/12,PHO-243/12,BO-211/11 NIST: National Institute of Standards and Technology PTB: Physikalisch-Technische Bundesanstalt |
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