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Paragon Scientific produces a range of refractive index standards for use in the calibration and verification of all types of refractometer e.g. handheld, Abbe and high accuracy digital instruments.

AOCS Tintometer colour reference standards are manufactured and certified by The Tintometer Limited. These colour standards have been manufactured and tested under the control of Tintometer's ISO 9001 Quality Management System.

Lovibond RYBN colour reference standards are manufactured and certified by The Tintometer Limited. These colour standards have been manufactured and tested under the control of Tintometer's ISO 9001 Quality Management System.

Our certified pH buffer range include solution for pH 4.00, 7.00 and 10.00 certified at either 20 °C or 25 °C, specifically used for verification and calibration checks of pH meter instruments.

- Products
- Calibration Standards
- Viscosity Standards
- General Purpose Viscosity Reference Standards
- Cold Cranking Simulator Viscosity
- Cone and Plate Viscosity
- Flow Cup Viscosity
- Low Temperature Viscosity
- High Temperature Viscosity
- High Temperature Viscosity Standards - 100 to 150 °C
- Medical Viscosity
- Mineral Oil Rotational Viscosity
- Pure Water Viscosity Standard
- Silicone Rotational Viscosity
- Small Sample Viscosity
- Special Blend Viscosity
- Certified pH Buffer Solutions
- Colour Standards
- Conductivity Standards - ISO Guide 34 / ISO 17025
- Conductivity Standards
- Density Standards
- Inorganic Calibration Standards
- Method Detection Limits
- Refractive Index Standards
- Relative Density Standards
- Secondary Working Flash Point standards
- Sulfur Standards
- Total Acid Number (TAN) Standards
- Total Base Number (TBN) Standards
- Turbidity Calibration Standards
- Viscosity Check Oils
- Viscosity Standards
- Certified Reference Materials
- Laboratory Reagents
- Custom Blends
- Viscometer Bath Media
- Calibration Standards
- Equipment
- ASTM Glassware
- D86 Distillation
- D1160 Distillation
- D1319 Hydrocarbon:(FIA)
- D1401 Water Seperability
- D2500 Cloud Point
- D3242 Acidity In Fuel
- D524 Ramsbottom
- D525 Oxidation Stability
- D611 Aniline Point
- D6371 Cold Filter Plugging Point
- D892 Foaming Of Lube Oils
- D943 Oxidation
- D97 Pour Point
- Glass Capillary Viscometers
- BS/IP/RF U-Tube Reverse Flow for Transparent and Opaque Liquids
- BS/IP/SL Viscometer for Transparent Liquids
- BS/IP/SL(S) Suspended Level Short Form for Transparent Liquids
- BS/IP/MSL Viscometer for Transparent Liquids
- BS/U-tube Viscometer for Transparent Liquids
- BS/U/M Miniature Viscometer for Transparent Liquids
- Cannon-Fenske Routine Viscometer for Transparent Liquids
- Cannon-Fenske Opaque Viscometer for Transparent and Opaque Liquids
- Houillon ISL® Viscometer for Transparent and Opaque Liquids
- Ubbelohde Viscometer for Tranparent Liquids
- Zeitfuchs Cross-Arm Viscometer for Transparent and Opaque Liquids
- Viscometers
- Glass Capillary Viscometers
- BS/IP/RF U-Tube Reverse Flow for Transparent and Opaque Liquids
- BS/IP/SL Viscometer for Transparent Liquids
- BS/IP/SL(S) Viscometer for Transparent Liquids
- BS/IP/MSL Viscometer for Transparent Liquids
- BS/U-tube Viscometer for Transparent Liquids
- BS/U/M Miniature Viscometer for Transparent Liquids
- Cannon-Fenske Routine Viscometer for Transparent Liquids
- Cannon-Fenske Opaque Viscometer for Transparent and Opaque Liquids
- Houillon ISL® Viscometer for Transparent and Opaque Liquids
- Ubbelohde Viscometer for Tranparent Liquids
- Zeitfuchs Cross-Arm Viscometer for Transparent and Opaque Liquids
- Rotational Viscometers
- Viscometer Accessories
- Glass Capillary Viscometers
- Laboratory Test Equipment
- Corrosion & Rust
- Colour Measurement
- Cloud Point & Pour Point Measurement
- Cold Filter Plugging Point (CFPP) Measurement
- Flash & Fire Point Measurement
- Foaming, Air Release & Emulsification
- H₂S and Particle Count
- Hydrometers
- Laboratory Baths & Circulators
- Polarimeters
- Refractometers
- Thermometers
- Vapour Pressure Measurement
- Viscosity Baths
- Viscosity Bath Accessories
- Viscometer Accessories
- Testing & Calibration Services
- ASTM Glassware
- Applications
- Industries