P17.3
pH Measurement — Electrode Calibration and Temperature Correction
Procedure 3 of 40 · Chapter 17 · §17.1.4
1 table 0 notes
Table 1
| Material Type | Typical pH Range | Acceptance Window | Standard Deviation (n=3) |
|---|---|---|---|
| Linear alkylbenzene sulfonic acid (LABSA) | 1.8–2.5 | ±0.3 | ≤0.05 |
| Sodium lauryl ether sulfate (SLES, 70%) | 6.5–8.5 | ±0.5 | ≤0.08 |
| Alcohol ethoxylate (AEO-9) | 6.0–7.5 | ±0.5 | ≤0.10 |
| Sodium tripolyphosphate (STPP) | 9.0–10.0 | ±0.3 | ≤0.05 |
| Sodium carbonate (soda ash) | 11.0–11.6 | ±0.3 | ≤0.05 |
| Zeolite 4A | 10.0–11.5 | ±0.5 | ≤0.10 |
| Carboxymethyl cellulose (CMC) | 6.5–8.5 | ±0.5 | ≤0.10 |
| Sodium percarbonate | 10.0–11.0 | ±0.4 | ≤0.08 |
| TAED (tetraacetylethylenediamine) | 3.0–5.0 (saturated) | ±0.5 | ≤0.10 |
| Enzyme granulate slurry (1%) | 6.0–8.0 | ±0.5 | ≤0.10 |