Lab glossary
Acceptable and permissible limits (IS 10500)
The two values IS 10500 gives for many drinking-water parameters. Water should meet the acceptable limit; the higher permissible limit may be tolerated only when no alternative source is available. Parameters marked 'no relaxation' have a single limit.
- Also: acceptable limit
- Also: permissible limit
- Also: desirable limit
- Also: relaxation
Where you will meet this term
- InstrumentNuclear magnetic resonance (NMR) spectrometer
- Test methodpH and Turbidity of Drinking Water
- Test methodTotal Dissolved Solids (TDS) — Gravimetric at 180 °C, with Conductivity Estimate
- Test methodTotal Hardness by EDTA Titration (Eriochrome Black T)
- Test methodPhenolphthalein and Total Alkalinity (as CaCO₃)
- Test methodChloride by Argentometric Titration (Mohr's Method)
- Test methodNitrate by UV Spectrophotometry (220 nm with 275 nm Correction)
- Test methodFluoride by Ion-Selective Electrode (with TISAB)