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Rhopoint – Certified Standard Oil

Certified Standard Oils are traceable calibration oils with known viscosity values, used for calibrating and verifying viscometers and rheometers. They provide accurate reference points for quality control and instrument validation.

  • Wide Viscosity Range – Nominal values from 14 cP to 20,000 cP at 25°C.
  • Multiple Units – Provided in cP, cSt, and KU for versatile use across different testing standards.
  • Traceable & Certified – Ensures reliable calibration and compliance with international metrology standards.
  • High Precision – Low uncertainty in viscosity values, suitable for rigorous laboratory and industrial applications.

Description

The Rhopoint Certified Standard Oil range consists of precision calibration oils used to verify and calibrate viscosity measurement instruments such as viscometers and rheometers. Each oil has a certified nominal viscosity value, ensuring reliable reference measurements for quality control and laboratory testing. The oils are available in a wide range of viscosities from 14 cP to 20,000 cP, with corresponding values provided in centistokes (cSt) at 25°C and Krebs Units (KU), making them suitable for calibration across multiple measurement systems used in coatings, paints, and industrial fluids.

These certified oils help ensure that viscosity measuring instruments maintain accuracy, consistency, and traceability during testing procedures. By using a known viscosity reference, laboratories and manufacturers can verify instrument performance and maintain compliance with quality standards in production and research environments. The uncertainty values are carefully controlled, providing dependable calibration references for precise viscosity measurements.

Specifications

Order Code Nominal Value (cP) Nominal Value at 25°C (cSt) Nominal Value (KU)
RL-A-VISCOSITYOIL 14 14 17 38
RL-A-VISCOSITYOIL 28 28 33 40
RL-A-VISCOSITYOIL 50 50 59 42
RL-A-VISCOSITYOIL 75 75 88 44
RL-A-VISCOSITYOIL 100 100 115 46
RL-A-VISCOSITYOIL 150 150 174 50
RL-A-VISCOSITYOIL 200 200 233 54
RL-A-VISCOSITYOIL 250 250 289 56
RL-A-VISCOSITYOIL 300 300 352 60
RL-A-VISCOSITYOIL 350 350 405 62
RL-A-VISCOSITYOIL 390 390 446 64
RL-A-VISCOSITYOIL 500 500 580 69
RL-A-VISCOSITYOIL 750 750 862 78
RL-A-VISCOSITYOIL 1000 1000 1160 86
RL-A-VISCOSITYOIL 1500 1500 1718 97
RL-A-VISCOSITYOIL 2500 2500 2860 114
RL-A-VISCOSITYOIL 3900 3900 4530 130
RL-A-VISCOSITYOIL 6000 6000 6900 149
RL-A-VISCOSITYOIL 7750 7750 9000 160
RL-A-VISCOSITYOIL 10000 10000 11300 172
RL-A-VISCOSITYOIL 15000 15000 17000 193
RL-A-VISCOSITYOIL 20000 20000 22500 207

Note: Uncertainties stated do not include the uncertainty of the viscosity of water at 20°C (ITS-90), which is 1.0034 mm²/s (cSt) ±0.17%.

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