| Standard | IS: 1205-1985 / IP: 58/63 |
| Title | Determination of Viscosity using Standard Viscometers |
| Method | Efflux time measurement through calibrated viscometer orifice |
| Applicable Instruments | Saybolt, Redwood, Engler, and other calibrated viscometers |
| Test Fluid | Petroleum products, oils, and similar fluids |
| Temperature Control | Required for standardization (±0.1°C accuracy recommended) |
| Units | Seconds, converted to viscosity units (Stokes, Centistokes) |
